5o5 sailboat

International 505

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One-Design Class Type: Dinghy

Was this boat built to be sailed by youth or adults? Adult

Approximately how many class members do you have? 100

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About International 505

The 5O5 is a double-handed boat that incorporates a lightweight, high-performance hull design with a powerful sail plan and one trapeze. The boat is unique in that it has outstanding performance in all conditions. In light air, it is quick and responsive, and in the breeze, it just goes faster.

Boats Produced: 9300

Class boat builder(s):

Duvoisin, Freemantle / XSP, Ovington Boats, Parker (G.W Parker & Sons), BlueBlue 505, Rondar Raceboats Ltd., Van Munster, Young Marine Services (YMS)

Approximately how many boats are in the USA/North America? 200

Where is your One-Design class typically sailed in the USA? List regions of the country:

East Coast, West Coast

Does this class have a spinnaker or gennaker? Yes

How many people sail as a crew including the helm?  2

Ideal combined weight of range of crew:  375 lbs

Boat Designed in  1955

Length (feet/inches): 16.6′

Beam: 6’2″

Weight of rigged boat without sails: 281 lbs

Draft: 4’9″

Mast Height:

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505 AT A GLANCE 

A POWERFUL HIGH-PERFORMANCE DINGHY

The 505 is a double handed dinghy raced worldwide, that incorporates a high performance hull design with a powerful sail plan and one trapeze. The boat has become very refined over the years and is unique in that it has outstanding performance in all conditions.

The class rules are one design, with the emphasis on controlling aspects that most directly affect boat speed. The sail plan and hull shape are tightly controlled, while the rigging layout, spars and foils are open. This allows the boat to be set up in many ways to suit different sailors. Most boats currently have adjustable shrouds, forestay and mast ram which allows rig tension, rake and mast being to be changed whilst racing.

The ideal sailing weight varies with the prevailing local conditions, with most successful racers being between 140 – 180kg.

Association Link 505.org

International 505 hull

Ovi white hull, light grey deck.

Devolved entirely by our in-house design team, drawing upon the knowledge and experience of Holger Jess- one of the most prolific 505 sailors of a generation. The new Ovington 505 is a result of over 6 months of R & D culminating in a complete 3D model from which the final tools have been CNC cut.

Fully optimised within the class rules – with feedback from the International 505 class association – key features include:

• Narrower sections forward
• Flatter and more powerful run-off aft
• Maximum waterline length
• Increased stiffness and structural efficiency

Price:  £14,200.00

            £11,833.33 (ex VAT)

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• Sailboat Guide

505 is a 16 ′ 6 ″ / 5 m monohull sailboat designed by John Westell and built by Rondar Raceboats, Fairey Marine Ltd, Fountaine Pajot, Butler Mouldings Ltd., Binks Yacht Contructions, Gmach & Co. Ltd. (J. L. Gmach & Co.), Parker Yachts, La Prairie, Honnor Marine Ltd., Lanaverre, Aubin, Chippendale Boats, Clark Boat Company, and Mader Bootswerft starting in 1954.

Rig and Sails

Auxilary power, accomodations, calculations.

The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL

Sail Area / Displacement Ratio

A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.

SA/D = SA ÷ (D ÷ 64) 2/3

• SA : Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
• D : Displacement in pounds.

Ballast / Displacement Ratio

A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.

Ballast / Displacement * 100

Displacement / Length Ratio

A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

• D: Displacement of the boat in pounds.
• LWL: Waterline length in feet

Comfort Ratio

This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )

• D: Displacement of the boat in pounds
• LOA: Length overall in feet
• Beam: Width of boat at the widest point in feet

Capsize Screening Formula

This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.

CSV = Beam ÷ ³√(D / 64)

Developed from the CORONET, the 505 soon became an international gold standard for high performance dinghys. The class rules have allowed experimentation in both rigging and construction techniques so that, as can be seen, many well known builders have, at one time or another, been involved in the building of 505s. The list of present and former builders shown is far from complete. The latest Information about current builders etc. can be found on the excellent class web site.

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The International 505 is a fast, fun and exciting two-person, high-performance trapeze sailing dinghy, raced in over 18 countries on 5 continents.

• Latest videos, from 2023
• Oldest videos, from 1962 onwards

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505 Sailing: Everything You Need to Know

by Emma Sullivan | Aug 21, 2023 | Sailboat Gear and Equipment

Short answer: 505 sailing

The 505 is a high-performance sailboat designed for racing purposes. Known for its maneuverability and speed, it features a single trapeze and a powerful rig. This two-person dinghy offers challenging yet exciting sailing experiences, often attracting experienced sailors looking for thrilling competition.

What is 505 Sailing? An Introduction to the Sport

Sailing, an ancient art that dates back thousands of years, has captivated human beings with its sense of adventure and freedom. From ocean voyages to leisurely cruises, sailing encompasses a wide range of activities that cater to all levels of enthusiasts. Amongst the myriad options available in the world of sailing, one particular class stands out for its versatility, excitement, and technicality – 505 sailing.

The 505 class refers to a specific type of high-performance racing sailboat that has gained immense popularity among sailors across the globe. First introduced in the early 1950s by John Westell, this double-handed, two-person racing dinghy quickly became known for its unmatched speed potential and exceptional handling characteristics.

So what sets 505 sailing apart from other forms of sailing? To put it simply – everything! Designed with meticulous attention to detail, these boats are precision-engineered for maximum performance on the water . With their lightweight hulls constructed from carbon fiber or fiberglass composite materials, coupled with a sleek design incorporating a powerful rigging system and innovative features like adjustable trapeze wires and hydraulic jib lead systems, 505 sailboats enable skilled sailors to achieve thrilling speeds while maintaining complete control.

While some may argue that any boat capable of reaching high velocities can offer an adrenaline rush on par with 505 sailing, what truly distinguishes this sport is its emphasis on teamwork and technical skill. Unlike single-handed sailing where the competitor must rely solely on their own abilities, 505 racing demands a dynamic partnership between skipper and crew.

In this thrilling dance on water, both individuals are tasked with optimizing their positions onboard – adjusting sails in perfect harmony based on wind conditions while skillfully manipulating weight distribution through strategic movements. The symphony of communication between skipper and crew ensures each maneuver is executed flawlessly – tacking into the wind at precisely the right moment, harnessing the power of gusts to accelerate when needed, and skillfully navigating tight turns with hair-raising precision.

It is this combination of technical expertise and synchronized teamwork that not only sets 505 sailing apart as a sport but also creates an incredibly rewarding experience for those who choose to take part. The sense of accomplishment derived from conquering the elements and mastering the intricacies of these high-performance boats fosters a deep camaraderie amongst sailors, making the 505 community one built on shared triumphs and mutual respect.

Beyond the excitement of competition, 505 sailing offers a unique opportunity to explore stunning bodies of water around the world. From picturesque lakes to majestic coastal regions, these versatile sailboats are equally adept at gliding across calm waters or challenging turbulent seas. Whether you’re racing against rival teams in international regattas or embarking on leisurely weekend cruises with friends, the 505 class allows you to immerse yourself in nature’s beauty while indulging your passion for adventure.

In conclusion, 505 sailing represents the perfect blend of speed, skill, teamwork, and exploration. It is a sport reserved for individuals seeking a thrilling challenge that pushes their limits both mentally and physically. If you find yourself captivated by the allure of sailing, yearning for an adrenaline-fueled activity that rewards dedication and precision, then look no further than 505 sailing – where every wave becomes an invitation to conquer new horizons.

How to Get Started in 505 Sailing: A Step-by-Step Guide

Sailing is an exhilarating sport that allows individuals to glide across the water, harnessing the power of the wind. One specific type of sailing that has gained popularity in recent years is 505 sailing. This high-performance two-person dinghy demands skill, teamwork, and coordination but offers a thrilling experience like no other. If you’re new to this exciting world and wondering how to get started in 505 sailing, look no further! In this step-by-step guide, we will walk you through everything from acquiring a boat to honing your skills on the water .

Step 1: Research and Familiarize Yourself with 505 Sailing

Before diving headfirst into any new endeavor, it’s essential to conduct thorough research. Get acquainted with the essentials of 505 sailing by reading books, watching videos, and talking to experienced sailors. Understand its history, rules, equipment needed (such as masts, sails, boards), and various techniques involved.

Step 2: Find a Suitable Boat

Now that you have a basic understanding of what 505 sailing entails, it’s time to find yourself a suitable boat. You have two options here: buying or renting a boat . If you’re committed to pursuing this sport long-term or are financially able, investing in your own vessel can be beneficial in the long run. However, for beginners who want to test the waters first or simply prefer not making such a substantial investment initially, renting is an excellent alternative.

When looking for a boat to buy or rent, consider factors such as quality (fiberglass vs. wooden hulls), availability within your area or local clubs/associations where fellow enthusiasts may provide helpful guidance.

Step 3: Seek Professional Guidance

To ensure you start off on the right foot (or paddle!), it is highly recommended that you seek professional guidance or training before venturing out on your own in a 505 sailboat. A certified instructor can help you understand the finer details of rigging, sailing theory, boat handling, safety procedures, and emergency protocols. They will teach you the essential skills needed to master the art of 505 sailing.

Step 4: Practice Makes Perfect

As with any skill or sport, practice plays a crucial role in improving your abilities as a sailor. Dedicate regular time to practice and refine your technique. Find a local club or community of 505 sailors to connect with like-minded individuals who can provide guidance and support along your sailing journey. Participate in training sessions, join group outings, and take part in races if available – these experiences will elevate your skills while fostering camaraderie.

Step 5: Learn from Your Mistakes

In sailing (and life!), mistakes are inevitable and should be viewed as valuable learning opportunities. Embrace setbacks as chances for growth and development. Reflect on what went wrong during a sail, analyze the situation objectively, consult with more experienced sailors if necessary, and work on avoiding similar errors in the future.

Step 6: Dive into Racing

If you’re seeking an adrenaline rush, consider registering for local or regional races within the 505 sailing community. Racing not only showcases your newly honed skills but also allows you to challenge yourself against skilled competitors and gain further insights into strategic maneuvering. Remember that racing is not only about winning but also about embracing competition as a means of bettering oneself.

To conclude…

Embarking on a new adventure such as 505 sailing can be both exhilarating and daunting at first glance. Yet armed with dedication, persistence, proper training, and an unwavering spirit of curiosity – there is no limit to what you can achieve! So dive into this exciting world headfirst by conducting thorough research; finding suitable boats; seeking professional guidance; practicing regularly; learning from mistakes; and eventually challenging yourself through competitive racing. Remember always to stay safe on the water while having the time of your life. Happy sailing!

Mastering 505 Sailing Techniques: Tips and Tricks for Success

Sailing enthusiasts often find themselves captivated by the challenging yet rewarding sport of 505 sailing. A high-performance two-person dinghy, the 505 is known for its speed, agility, and tactical prowess. However, mastering this sailing technique requires not only skill but also a profound understanding of the boat’s dynamics and strategic thinking. In this blog post, we will delve into some essential tips and tricks that can help you navigate your way to success in the competitive world of 505 sailing.

Before we dive into the specifics, it’s important to note that improving your performance in any sport comes down to practice, perseverance, and passion. The same applies to 505 sailing. You must commit yourself to regular training sessions on the water and continually strive for improvement.

Now let’s explore some techniques that can give you an edge over your competitors on a 505 sailboat:

1. Familiarize Yourself with Boat Dynamics: Understanding how your boat behaves in different wind conditions is crucial . Spend time observing how the wind interacts with your sails, centerboard, rudder, and hull shape. By studying these dynamics closely during various scenarios on the water, you’ll gain valuable insights into how to optimize your speed and maneuverability.

2. Balance Is Key: Achieving balance on a 505 sailboat is crucial for maintaining control and speed. As both crew members work together in harmony, distributing their weight strategically becomes essential during maneuvers such as tacking or gybing. Maintaining a balanced position helps prevent capsizing while allowing for quick adjustments when needed.

3. Harness the Power of Sail Trim : Proper sail trim plays a pivotal role in making your boat perform optimally across diverse wind conditions. Start by ensuring your mainsail is set correctly by adjusting both the halyard tension and Cunningham controls accordingly. Pay attention to twist control – it affects overall power and balance. Experiment with different positions for jib lead and sheet tension to fine-tune your boat’s performance.

4. Master Speed Techniques: The art of maintaining consistent speed while sailing is critical for staying ahead in a 505 regatta. Work on refining your techniques of maximizing power through acceleration off the starting line and executing efficient maneuvers around marks. Small adjustments such as easing or trimming sails, weight distribution, and anticipating gusts can make a significant difference in gaining an edge over your competitors.

5. Embrace Strategic Thinking: Successful 505 sailing also involves being able to think several steps ahead of other boats. Anticipate wind shifts, current variations, mark roundings, and any obstacles that may come your way. Keep a close eye on your competition to identify tactical opportunities that you can exploit swiftly and effectively.

6. Communicate Effectively with Your Crewmate: The synergy between the two crew members is vital for success in 505 sailing. Establish clear communication channels to relay information about timing adjustments, sail trim variations, or any other factors affecting boat performance promptly.

7. Analyze Races Post-Sailing: Invest time in post-sailing analysis regularly to understand what worked well and areas that need improvement during races or training sessions. Embrace technological tools like GPS tracking or video recordings to revisit specific instances where you excelled or encountered challenges.

Remember, mastering 505 sailing techniques is an ongoing journey that requires a combination of technical knowledge, physical skills, mental agility, and camaraderie with your crewmate. By devoting yourself diligently to these tips and tricks while continuously seeking opportunities for growth and learning, you’ll increase your chances of achieving success on the competitive waters of 505 sailing!

Common Questions about 505 Sailing Answered

Are you a sailing enthusiast looking to try something new and exciting? Look no further than 505 sailing! This dynamic and exhilarating sport has gained popularity among sailors around the world, but many still have common questions about it. In this blog post, we will answer some of the most frequently asked questions about 505 sailing.

1. What is 505 sailing? 505 sailing is a high-performance two-person racing sailboat class that originated in Sweden in the 1950s. Designed by maritime architect John Westell, this sleek and versatile boat quickly became popular for its excellent performance in a wide range of conditions. With its unique self-draining cockpit and advanced rigging systems, the 505 offers unmatched speed and maneuverability on the water .

2. How do I get started with 505 sailing? Getting started with 505 sailing requires both skill and dedication. First, find a partner who shares your love for the sport – teamwork is key! Next, ensure you have access to a properly maintained 505 sailboat or consider joining a local sailing club where you can borrow or rent one. Once you have secured your boat, practice regularly to improve your skills and build experience on different types of courses and weather conditions .

3. Is it difficult to sail a 505 ? Sailing a 505 demands precise control and coordination between both sailors. The boat’s high-performance nature means it can be challenging for beginners; however, with practice and proper training, anyone can become proficient in handling these boats. Attending beginner-friendly regattas or seeking guidance from experienced sailors can accelerate your learning process.

4. What are some advantages of sailing a 505 ? The beauty of sailing a 505 lies in its versatility – whether you prefer competitive racing or leisurely cruising, this boat has got you covered! Its exceptional speed allows for thrilling races against other sailors while also providing comfortable cruising experiences for those looking to enjoy serene days on the water. Additionally, the 505’s adjustable sail plan and advanced rigging systems offer sailors the opportunity to fine-tune their boat’s performance based on varying wind conditions.

5. Can I sail a 505 solo ? While it is possible to sail a 505 single-handedly, it is primarily designed as a two-person racing boat. The strategic teamwork required in this class adds an extra layer of excitement and camaraderie to the sport. However, if you have advanced sailing skills and are looking for a challenge, you can certainly sail solo or with just one crew member in lighter winds.

6. Are there different racing classes within 505 sailing? Yes! The International 505 Class Association (IACA) categorizes races into different divisions based on crew weight ranges – lightweight, mediumweight, and heavyweight. This classification ensures fair competition by balancing boat speed among crews of various sizes.

In conclusion, 505 sailing offers a thrilling and adaptable experience for sailors of all skill levels. Whether racing head-to-head or enjoying the tranquility of cruising, this high-performance boat will surely fulfill your sailing dreams. So gather a partner, hit the water, and embrace the excitement that comes with navigating a stunning 505 sailboat !

Exploring the Thrills of 505 Sailing: Why It’s Worth Trying

Have you ever felt the exhilaration of slicing through the water with only the wind to guide you? If not, then it’s high time you tried 505 sailing. This adrenaline-pumping sport combines speed, strategy, and skill to create an experience like no other. In this blog post, we will delve into why 505 sailing is worth trying and why it leaves sailors hooked for life.

To truly grasp the essence of 505 sailing, let’s start with its history. Developed in the early 1950s by John Westell in Great Britain, this cutting-edge design quickly gained popularity for its versatility and performance capabilities. Named after its length of five meters and five centimeters, the 505 sailboat continues to be a class recognized worldwide and embraced by enthusiasts who crave adventure on the water.

One of the most captivating aspects of 505 sailing is its inherent thrill factor. Picture yourself at the helm of a sleek boat soaring across racing waters – that rush is unparalleled! The combination of high speeds propelled solely by wind power gives an adrenaline kick that will leave your heart pounding in excitement. There’s an undeniable sense of freedom as you harness nature’s forces to glide effortlessly through open seas or challenging lake courses.

But it’s not just about speed; strategy plays a crucial role too. Every decision counts when racing a 505 sailboat. From gauging wind conditions and adjusting sail trim to outsmarting competitors during mark rounding, this sport demands acute mental agility alongside physical prowess. It’s like a game of chess on water as sailors carefully weigh their choices while predicting opponents’ moves – all while tearing through waves at breakneck speeds.

What sets 505 sailing apart from other forms of competitive sailing is its unique teamwork requirement. Unlike single-handed boats, such as Laser or Optimist dinghies, helming a 505 requires a crewmate who handles various tasks while onboard. This aspect fosters camaraderie and trust between sailors, creating an unbreakable bond on and off the water. The synchrony required between skipper and crew is a delicate dance that elevates the overall sailing experience .

Beyond the thrilling nature of 505 sailing, it also offers opportunities for personal growth and development. As you immerse yourself in this challenging sport, you’ll gain invaluable skills in decision-making, communication, and teamwork – attributes that transcend the water and can be applied to various aspects of life. The self-confidence garnered from mastering the complexities of 505 sailing will carry over into other endeavors you pursue.

If all these reasons haven’t convinced you yet, let’s not forget about the dedicated community surrounding 505 sailing. From local regattas to international championships, there is no shortage of events where you can connect with like-minded individuals who share your passion for this incredible sport. The sense of belonging to a global network of sailors fosters lifelong friendships and a sense of belonging to something greater than oneself.

So, whether you’re a seasoned sailor searching for your next challenge or a newcomer looking to dip your toes into an adrenaline-fueled adventure – give 505 sailing a try. Feel the wind in your hair, embrace the rush of speed, and witness firsthand why this sport has captivated sailors worldwide for decades. It’s time to explore the thrills of 505 sailing because once you do, there’s no turning back – prepare to embark on a journey that will leave you breathless and craving more.

Safety First: Essential Gear and Precautions for 505 Sailing

When it comes to sailing, safety should always be the top priority. Whether you’re a seasoned sailor or just starting out, having the right gear and taking necessary precautions is essential for a smooth and secure sailing experience. In this blog post, we will delve into everything you need to know about staying safe while 505 sailing.

The 505 sailboat is known for its speed and agility on the water, making it a popular choice among competitive sailors . However, with great power comes great responsibility – ensuring your safety depends on being adequately prepared and using the right equipment.

One of the most important pieces of gear for 505 sailing is a personal flotation device (PFD). Wearing a PFD not only keeps you buoyant in case of an emergency but also provides an added layer of protection against potential injuries. Look for a PFD specifically designed for sailing as it will offer greater freedom of movement and comfort.

Sailing in all weather conditions is part of the thrill but can also be unpredictable. To stay dry and protected from harsh elements such as wind and rain, invest in high-quality foul-weather gear. This includes waterproof jackets, trousers, gloves, and boots – items that are designed to keep you warm and dry even when faced with challenging weather conditions .

A properly fitted helmet is often overlooked by sailors but can make all the difference in terms of safety. During high-speed maneuvers or unexpected jibes, there’s always a risk of hitting your head on rigging or other equipment onboard. A lightweight helmet designed specifically for sailing will provide crucial protection without hindering movement or comfort.

In addition to protective gear, certain precautionary measures should be taken before setting sail on your 505 boat. Regular maintenance checks are crucial to ensure that your vessel is in optimal condition – paying attention to essentials such as rigging tension, hull integrity, and keel bolts can prevent potential accidents while out on the water.

Before heading out, it’s also vital to evaluate weather conditions and plan your route accordingly. Being aware of potential hazards and adjusting your course or timing can prevent unnecessary risks. Don’t forget to inform someone onshore about your sailing plans, including estimated return time, to assure that help is readily available should an emergency arise.

Lastly, staying knowledgeable about safety procedures and techniques is key for any sailor. Enroll in a sailing safety course specific to 505 boats to gain insights into best practices and emergency protocols. These courses will equip you with the necessary knowledge and skills to handle unforeseen situations that may occur while out at sea.

To sum it all up, when it comes to 505 sailing, “safety first” is the golden rule. Equipping yourself with essential gear such as a PFD, foul-weather gear , and a helmet is paramount for your protection during high-speed maneuvers or changing weather conditions. Additionally, diligent maintenance checks and route planning are crucial precautions before setting sail . Lastly, never underestimate the value of learning and refreshing your knowledge through dedicated safety courses.

Remember, the real enjoyment of 505 sailing lies not only in its exhilaration but also in knowing that you have taken all necessary steps to keep yourself safe onboard. Stay prepared, stay informed, and embrace the thrill of this incredible sport with peace of mind!

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Published on April 13th, 2023 | by Editor

505 World Championship coming to USA

Published on April 13th, 2023 by Editor -->

The 5O5 Class Championships in 2023 will be hosted by St. Francis Yacht Club in San Francisco, California. The two-day 5O5 Pre-Worlds and North American Championship will be on September 23-24. The 5O5 World Championship will be sailed September 26 through October 1, with five days of racing plus one lay day for a total of six days.

Initially slated to be held in Santa Cruz, CA, the event was moved due to damage from the winter storms which impacted harbor access.

“There is no boat like a Five-O,” said said Beau Vrolyk, 2023 Commodore of St. Francis Yacht Club. “The extraordinary levels of skill in the fleet, and the tremendous camaraderie, make this one of our favorite fleets. Our Race Committee has been testing course options and working closely with the local fleet leadership, including a few World Champions, to ensure the best possible racing and parties.”

For three-time 5O5 World Champion Mike Holt, to be able to participate in a World Championship event on his own turf is exciting—particularly in a fleet as competitive and challenging as the International 5O5.

“It’s great to have the regatta in California. It’s an amazing venue in an iconic spectacular piece of water,” Holt stated. “It was very gracious of StFYC to step in at the last minute to host the event. It’ll be fun and I’m looking forward to it.”

The depth of talent in the 5O5 class is impressive, including sailors like Holt who started sailing the boat in 1985 when he was 16 years old.

“I’ve pretty much done only 5O5 sailing all those years. I’ve maybe taken a few years off here and there and sailed other things—keelboats, dinghies, 49ers, 18s—but it’s what I keep coming back to,” said Holt, who resides in Santa Cruz. “When you live on the West Coast it’s really the only good high-performance sailing that you can do safely, and it is a great fleet.”

Holt will be racing with his two-time World Champion crew Carl Smit (Annapolis, MD), and the pair have a long-time friendly rivalry with Mike Martin who lives and trains in the Bay Area. Martin, who sails with Adam Lowry, is a four-time 5O5 World Champion and twelve-time 5O5 North American Champion.

“Carl and I are fairly well-rounded and don’t really care what the weather does,” Holt commented. “I think Mike Martin prefers it when it is windy and he probably has a slight edge on us when it’s windy, but we have a slight edge when it’s more variable.

5O5 sailor Harrison Turner, chairperson for the 2023 5O5 World Championship, likes the timing of the event. “September is our best month, with warmer weather and lighter winds,” Turner commented. “The racing will be located between the clubhouse and Alcatraz Island which will make for great spectating, too.”

Organizers are anticipating some 80 boats from around the world and North America on the start line.

“We’ve heard a lot of interest from Europe, Australia, and from all over North America – we’re expecting as high or higher than numbers for Cork, Ireland last year,” Turner continued. “Holding the event on the West Coast of the US can be a bit of a hurdle for the European fleets, but we have fantastic support from the local fleet as well as the Port of Oakland close by, so logistics will not be as challenging as they may appear for our overseas competitors – we hope they come!”

Turner said his committee is creating a logistics hub where sailors can look for crew and boats if need be.

“Crew can be a hard thing to coordinate so we’d like to be able to connect visiting competitors with local sailors who can make the commitment when maybe their partner can’t,” Turner said. “Our goal is to get as many boats on the water as possible.”

StFYC’s Commodore Beau Vrolyk encouraged sailors to look forward to more than just world-class racing: “This fleet and its epic sailing style have a special place in the hearts of St. Francis members. It’s great to have them back again. This year, we are going all out to give everyone what they came here for: good breeze, close competition, and a racecourse in the most beautiful spot on the San Francisco Bay. It’ll be a beam reach to the bar!”

Event information – Race details – Facebook

Tags: 505 , 505 World Championship

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Rigging a Bare Hull 505, USA 9042 (Rondar) by Craig Thompson and JB Turney

Home » Library » Rigging and Project Archive » Rigging a Bare Hull 505, USA 9042 (Rondar)

Below is a series of articles from the  Fleet 13 Website  on rigging a bare hull carbon Rondar. This project was completed in May 2011. Rigging a bare hull is a daunting task, but hopefully, this information may be helpful should you chose to take on this major project. For newcomers to the 505 Class, buying a used or rigged boat is highly recommended.

Bare Hull Photos

JB’s New Rondar has landed in Chicago. Stay tuned in the next few months as we document the rigging process.

Bailer Well Installation and Mast Step Modification

There are a few things that we needed to do to JB’s new Rondar before we start drilling holes and installing fittings.

The first project was to install the second aft bailer well that was supposed to be done at the factory. JB opted for twin outboard aft bailers similar to USA 8854. This arrangement will, in theory, cause less turbulence on the rudder in planing conditions compared to the large aft bailer found on most Waterats. The Rondar came with one of the outboard wells installed as well as the stock aft well which will remain unused. The wells have a thin piece of wood in place of the foam core that yields the appropriate thickness to get the fitting flush with the hull.

To form a new well, you need to grind out the inner skin, add the wood core, and re-skin the floor. Note that air tools pretty much mandatory for this project. A small angle grinder with various sizes and grits of sanding disks make for quick work of the inner skin and the foam core. Go slow enough that you can be sure you will not grind through/into the outer skin. Vacuum bagging capabilities are also important for getting a proper inner skin installed over the wood core.

We used the piece of boat that was cut out from the other bailer well to gauge the thickness of wood we needed to bond in place. This was cut to size and bonded in with epoxy and colloidal silica. We used 1/4″ marine grade plywood that had to be sanded down closer to 3/16″ to match the stock well.

The fillets were sanded to the appropriate smoothness and dimension. The well was prepared to be re-skinned with 2 layers of ~8 ounce carbon.

The cloth has to be carefully cut to bridge/taper onto the existing laminate and show no sign of a ridge when the epoxy has cured.

In this case we chose to put the vacuum cup in the center of the well because it was going to be cut out anyway. Generally, you do not want a vacuum cup on top of the part being molded because it leaves an indentation.

As you can see below, the new skin mates well and tapers smoothly onto the existing inner skin. We were very happy with this result. We will show you the finished product in a later post.

The back of the mast gate also needed to be cut out all the way back to the diagonal bulkhead. This allows you to rake to the extreme without running out of play in the mast ram.

The diagonal bulkhead had a lip above the fore-aft beam under the mast step plate. There is a carbon tray that serves as the mast step base and sits on this section of the diagonal bulkhead and the fore-aft beam. As-provided, the lip prevented the plate from lying flat on the fore-aft beam, so we ground down the diagonal bulkhead so the mast step plate could lay flat on both surfaces. The edge that was sanded was then sealed with epoxy to ensure that the wood core would not soak up any water.

As you can see below, the mast plate now can lie flat and be in contact with all surfaces.

Rigging Progress Photos

At last, it’s spring in Chicago, though one might have been fooled by the snow falling on Monday morning. Happily, we’ve had enough warm weather to dive into the fitting out of my new Rondar USA 9042.

Craig and I spent a lot of time talking over the winter about the rigging philosophy of the boat and what systems we thought needed to be implemented. The boat borrows heavily from Craig’s own layout on USA 7346, but has been adapted to the particulars of the Rondar. Overall, we’ve found the Rondar to be easy to layout as the wide centerboard cap gives you a lot of options for placing hardware. The width allows clean leads on the various purchase systems and helps keep them out of the way of the crew.

Here are a few pictures of our progress:

More Rigging Photos

Layup stacks ready to be wet-out on cardboard. I used 2 layers of 8 oz carbon twill on the top followed by 3 layers of 6 oz s glass followed by another layer of carbon twill on the bottom. Preparation is key for the vacuum bagging operation. Everything should be pre-cut and staged where it needs to be. Especially when your work partner is playing golf in California and you are working alone.

Shroud tracks were ground to fit the curvature of the deck and bedded in epoxy and filler colored wit black pigment. A small fillet was used on the bottom edge to finish the install.

1/4″ G10 plates were bonded on the side of the centerboard case to mount eyestraps for some shock cord take-ups. The plates were drilled and tapped before they were bonded in. Use some sacrificial hardware coated in McLube to keep the epoxy and filler from filling the tapped holes. These plates were masked and painted with a rattle can.

Custom quintuple block mounted on the forward bulkhead. This block was made using Harken 16mm self-contained sheaves with 1/16″ carbon disks between. Duralac was used on all the carbon/stainless interfaces to prevent corrosion. This block is to lead 5 shockcord passes under the launcher tube; 3 for the trapeze take-up and 2 for the foreguy.

Another bonded G10 plate for the trapeze and foreguy shocked.

Turning block for the guy control line led aft along both seat tanks. This G10 plate was bonded in with 1 of the 4 fasteners through bolted on the diagonal bulkhead. This was a tricky install due to the complex angles involved.

Under deck launcher cleat hardware mounted to G10 plates. Note that the deck on this boat will be super clean as none of this hardware is through bolted. There is just a bullseye where the line exits and the Melges flanges on the aft face.

Aft centerboard case detail.

Guy turning block riser plates being vacuum bagged. Note that the suction cup is placed outside of where the part will be taken from.

Riser plate unmolded, trimmed and sanded. These turned out great and will get clear coated.

Carbon Angled Guy Risers

The boat is ready to rock

Benefactor Members

Robert Woelfel II Thomas Hurwitch Tyler Moore Mike Holt Duane Delfosse Tim Murphy Aaron Ross Craig Thompson Bryan Richardson David Shelton Howie Hamlin Adam Lowry Mike Martin Eric Anderson Reeve Dunne Chris Pittack Ted Conrads Sol Marini Andrew Forman Blaine Pedlow David Burchfiel Curtis Hartmann Dustin Romey Matthew Breton Peter Scott Bruce Edwards Mike Zani Jason Breeden Fred Grimm Matthew Barry Clark Hayes Keith Longson David Kirkpatrick Jeff Miller Paul Kueffner Ryan Nelson Rob Waterman Matt Merchant Paul Kurr Ian O'Leary Jimmy Franzone Adam Wolnikowski

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You may have heard that 505’s are some of the most well-made dinghy’s around. Many 505’s can stay competitive for an indefinite period of time when well cared for. Some older 505’s were not built as well, and may not be worth spending time and money on to get back on the race course. This page is organized in a way to help you determine which boat is right for your own 505 sailing goals. Visit the list of builders for more information on all the various 505 builders throughout the years. Also, hull numbers are sequential, and are issued upon initial measurement after the boat is built. The minimum weight of a 505 (weighed with all equipment required for racing except sails) is 127.4kg or 280.9 pounds. Many boats have lead corrector weights (50% located at front of CB trunk, 50% located at rear of CB trunk) to bring the boat up to this minimum weight.

The used boat ads on this page are organized based on the following classification scheme:

The Surtees Service Award was dedicated at last year’s NA’s to commemorate outstanding service to the American Section. The inaugural award was presented to Ali Meller.

It is a pleasure to introduce the 2003 winner of the Surtees Service Award – Jesse Falsone.

As all of you know, Jesse is the epitome of the “go-to guy” for our Class. When a valuable role within the American Section needs to be filled, Jesse has never been afraid to put his money where his mouth is and step up to the task.

In the eight years that he has been in the Class, Jesse has served as both Class Secretary/Treasurer, and President of the American Section.

Upon “retiring” as Class President, Jesse took on the role of Tank Talk Associate Editor, and over the past few years, no one has contributed more material to Tank Talk than Jesse.

Jesse is an incredibly focused competitor who has always found time to pass his knowledge along. After working for years to become one of the top 5o5 crews in North America, Jesse published a compendium on “High Performance Dingy Crewing,” utilizing both his knowledge and that of other top NA 5o5 crews. This pamphlet runs 33 pages, and is literally a textbook of how to climb the learning curve for a 5o5 crew. Any skippers out there up to the challenge?

Jesse has set the bar for 5o5 class members, dedicating a superhuman amount of time & effort into making the American Section the solid organization that it is today.

Although he is taking a well-deserved break from the 5o5 and cannot be here today, let’s have a big round of applause for Jesse.

Ted Ferrarone

I’m very proud to have commissioned this new service award bearing the name of one of our most distinguished members: Dennis Surtees’. Dennis is a legend in this class, both for his outstanding performance and for his superlative service. I’m equally proud to have Ali Meller as the first recipient. Ali has served in so many capacities for this class, most of which many of you don’t know about or may have forgotten. Ali has been fleet captain in the US for two different fleets (maybe more in Canada?). In one of these he was largely responsible for the creation of this fleet at a new club. He served as VP of the American Section, Editor of Tank Talk, VP of international (an office created for him), and is now completing his term as President of international. As webmaster, Ali took the 505 web page and made it the most informative class page on the Internet. US Sailing used our web page as an example of what a great class web page should look like. Ali was also instrumental in introducing countless people to the 505 through personal communications and through sailing time.

Ali’s leadership came along at a crucial time for the 505 class. In the early 90’s we were a class teetering precariously on the seesaw of success and failure. Our numbers in the US had steadily declined, and the class lacked direction. Ali was the catalyst for our resurgence, and a large reason why we all enjoy fine competition today.

Simply put, nobody in the world has put more into the 505 class in the past decade than Ali Meller.

Ali, on behalf of the 505 American Section, it’s my honor to present you with the Dennis Surtees Service Award for 2002.

“I nominate Bill McKinney and Stine Cacavas for the Cahn award. Bill has been with the San Diego for over ten years, and is the guy who always spends regattas in good spirit, with lots of humor, humbleness and grace. And style. After coming in from the race course early one day in Santa Cruz, while sitting in his chair, he greeted every sailor at the ramp with a cold Corona with lime. Yes, his regatta kit includes chairs, a cooler on wheels, and a cutting board. Stine has been sailing with Bill for a few years now, and while she shares Bill’s positive attitude, she also brings a new level of competition to the team. They competed in the 2010 worlds in Denmark sailing Fever Pitch, Dave Cahn’s own Lindsay. For the 2012 worlds in France they upped their game, buying a newer Waterat. I take this as a good sign that they will continue to favor us with their company for many years to come.”

Aaron Ross, USA 7156

Nominated and presented by: Mike Martin

The Dave Chan award goes out to the individual or team that expresses sportsmanship in the unique way of 505 sailing because they love 505 sailing. The award is not necessarily for the guy that wins all the races, but the guy you would most like to have a beer with at the end of the day.

These guys fit that description perfectly. They both came into the 505 picture from illustrious lead mining careers. After the first day of proper breeze in a 505 they were hooked. Since then they have enjoyed attending many of the events in northern and southern California. At the end of the day they are always thrilled with whatever they experienced and learned on the water. They are always willing to lend a helping hand despite the fact that they are usually involved in some major repair project themselves. It is always a pleasure having these guys around both on and off the water and we would all have more fun if we adopted their attitude. That is why this year the Dave Cahn award should go to Brad Wheeler and Bill Mais.

As most of you know, the Dave Cahn trophy was created in 1998, in memoriam of Dave Cahn, and his special brand of sportsmanship. Past winners have included Eric Willis/Wendy Herzburg, Barney Harris, Dan Merino/Bill Jenkins, Henry Amthor, and in 2002, Stuart Park.

Please give a big round of applause for the winner of the 2003 Dave Cahn Trophy: Paul Von Grey.

Paul’s nomination for this award was so excellent, that we will just read it to you:

“I would like to Nominate Paul Von Grey of the Pacific Northwest Fleet for the Dave Cahn Trophy. Paul has virtually single-handedly (no pun intended) been the motivation for the resurgence of the 505 fleet in Washington. He has helped push attendance at regattas from an average of three boats to a recent high of 16. He regularly rounds up sailors following races to debrief on successful and unsuccessful strategies and rigging tips. He serves as the unofficial parts warehouse for most of the sailors in Washington and probably has contributed parts, time or rigging advice to a majority of boats in Washington, Oregon, and British Columbia. He helped obtain a container of highly competitive boats that have raised the quality of racing dramatically. Whether you are a current 505 owner who needs to locate crew or a prospective 505 competitor who wants to go for a test ride, Paul is the guy who helps make the connection. He successfully poaches new 505 sailors from other fleets at regattas and every new sailor in the local fleet has probably been pointed to Paul as the guy to talk to about 505’s.

The Pacific Northwest fleet is a knowledgeable, friendly and helpful group of people and the description above could apply to every person in the fleet, however, no person embodies all of those qualities as completely as Paul.”

Let’s give another round of applause for Paul Von Grey!!

Nominated by Dave Stetson

Jesse, I wish to nominate Graham Alexander for an honorary life-membership in the class.

Graham first became a 5-oher around about 1967 and he has been one ever since. I know only a few on this side of the pond with that kind of longevity in the class. He has owned at least six boats, beginning with a 2XXX series boat; he currently owns two, a 45xx Rondar rigged to race with other classics, and Parker 7685. Not only has Graham been loyal to the class with his presence, he has been one of the class’ most ardent recruiters here in the Midwest. Within two weeks of the day I moved to Columbus in 1985, he was in my kitchen pushing me into the fray, getting me onto the boat, and helping me to find a crew slot. He has introduced dozens of people to the boat during the 17 years I have been around to watch.

In addition to recruiting, Graham has been the organizer of the class in Region 3 for as long as anyone can remember. Ki Kaiser and Graham have worked together ensuring a variety of regattas and spreading the word. He was the formal Midwest coordinator for most of the years since 1970.

Graham has been extremely generous with his time helping people to buy boats, helping them to rig them well, and helping to repair them when they broke. He has loaned his garage, his tools and equipment, his hands, and his expertise for fiberglass work, vacuum bagging, and rigging. Each winter, he has taught Sunday-evening courses on racing rules and tactics, crewing and helming skills to groups of local sailors, including newbees and hardened veterans.

Graham has been one of the true fixtures in the class and he has been one of its best public-relations specialists. Through his energy and love of the boat and the class, he has kept 505s in the Midwest and has kept Fleet 17 alive at Hoover Yacht Club. He may not be the most jolly of 505 sailors because he takes his sailing very seriously. It is integral to his core as a person and his love for the class is infectious. Because of his dedication and generosity, I believe he is as close to a life member as one could come.

Nominated by: Mike Martin and Ryan Cox Presented by: Dennis Surtees

Most of the time when we think about an award for service to a class we think about class officers or people that have volunteered their time in a very broad manner. Howard has served this way in the past by being an international class president but that is not why he deserves this award. Everyday Howard provides service to the class on a much more personal level.

The services that he provides range from straightening a mast, to loaning out his coach boat out free of charge, or letting people use his tools or even his entire garage. If you don’t know how to fix something on your 505, you need a tool or a part, who is the first person that you ask?

His services are organizational as well. Howie is always thinking of ways to better himself and always passes what he learns on to the fleet, even if it is one boat at a time. The Long Beach fleet would simply not exist without Howie. Every year howie takes the lead in organizing our weekly practices. A few years ago Team Tuesday was 1 or 2 boats, this year we often see 7 or 8.

Howie has also provided a huge service to the development of the equipment that we use today. 25 years ago he built molds and long lasting Honeycomb Kevlar boats that are still competitive today. Howies funding of the blade development program resulted in production centerboards that cost every one else much less than the developmental price that he paid.

There is no one more valuable to our fleet than Howard. So whether or not he wins this award, next time you see him, just say “Thanks Howie”!

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For assistance placing an ad, please contact us using the form on the “Contact” page .

New to the 505 Class?

If you’re new to the 5O5 Class, you’re in for an exciting journey. Known for being exceptionally well-made, 5O5 dinghies can remain competitive indefinitely with proper care. However, not all older 5O5s are created equal. Some may not be worth the investment of time and money to restore for racing.

To make informed decisions, explore this comprehensive list of 5O5 builders throughout the years: 5O5 Builders Archive .

Understanding hull numbers is crucial.  They are assigned sequentially upon the boat’s initial measurement after construction. The minimum weight for a 505 (weighed with all required racing equipment except sails) is 127.4kg or 280.9 pounds. Note that many boats have lead corrector weights strategically placed to meet this minimum weight requirement (50% at the front of the CB trunk, and 50% at the rear of the CB trunk). (Information modified from the American 505 Page)

Explore Used Boats and Equipment in Canada:

Browse our listing of used boats and equipment available for sale in Canada. For additional options, the American 505 Section features a highly reliable classifieds page that is regularly updated. Maximize exposure for your items by posting them in multiple places.

Ready to dive into the 505 Class boat market? Whether you’re buying or selling, our platform connects enthusiasts for smooth transactions. Explore the listings, and if you need assistance placing an ad, reach out to us through the contact form on our website. Let the adventure begin!

Race to Victory: Waterrat Kevlar Nomex Hull, North Sails, and More! Ready to Sail for only $9,000

Good starter boat. Located in Toronto.

Fremantle/XSP 505 For Sale No. 8996

Several sets of 505 sails Available Mains, jibs and spinnaker

Classic 505 in Very Good Condition

Used Sails Wanted

Bigfoot Harness