shark 24 yacht

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Shark 24 is a 24 ′ 0 ″ / 7.3 m monohull sailboat designed by George Hinterhoeller and built by Halman Manufacturing Co., Hinterhoeller Yachts Ltd., and C&C Yachts starting in 1959.

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)

Although the first SHARK was built of plywood. But when designer/builder George Hinterhoeller started building them of fiberglass he couldn’t keep up with demand and the design became an international success. Since then, more than 2,500 Sharks have been built. Besides North America, Sharks sail the lakes of Austria, Switzerland, Germany and the waters of the Swedish archipelago. There have been a number of cosmetic changes to the design but, by in large, one-design standards have been maintained. ‘Sharkscan’ has been the class newsletter.

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November 30, 1999 by Sail1Design Editor Leave a Comment

Windrift Judy Kingsley’s “Windrift” off Coboug in 1981

When George Hinterholler designed the Shark in 1959, he was looking for a boat that would “go like hell when the wind blew.”  Growing up sailing in Austria’s Salzkammergut region, Hinterholler was used to light displacement finkeelers; fast, responsive and exciting.

The few sailboats he found on Lake Ontario when he immigrated to Canada in 1952 had heavy displacement hulls.  They were ponderous and had a bad habit of hoppy-horsing in the rough Lake Ontario chop.

The young boat builder/designer was bored by their performance. Announcing that he could build a boat that would sail circles around the rest, he retired to the shed behind his Niagara-on-the-Lake home and built Teeter Totter, a hard-chined 22-foot sloop made of plywood.  It was the forunner of the Shark.  And when the wind blew, it did go like hell. Its designer loved it and so did his friends.

There was an immediate demand for the nimble little boat 35 years ago, so that winter Hinterholler increased the length to 24 feet and began building plywood Sharks in his shed.  Hull number 5 was for a customer by the name of Bill O’Reilly who demanded that his boat be built of a substance relatively new to boat building; fiberglass.  He even offered to teach Hinterholler how to use it.  With fiberglass it took 18 man-hours to produce a hull instead of the 128 hours devoted to a wooden hull, and  fiberglass was virtually maintenance free.  That made his boat the  affordable yacht and Hinterholler and Shark were on their way to  International success.

Since then, more than 2500 Sharks have taken their place in the fleet, both on the North American continent and in Europe.  It rapidly became the biggest one-design keelboat fleet on the Great Lakes and today their are active groups on the east and west coasts and in the Montreal and Ottawa areas.  About 500 Sharks sail the large lakes of Austria, Switzerland and Germany and the waters off the Swedish archipelago.

There have been changes since Hinterholler first designed it, but they have been cosmetic.  The sleek hull, straight stem, and long flat run at the stern, fin keel and spade rudder made it a racer that climbs easily over its bow-wave to achieve speeds in excess of 10 knots.  The six-foot beam and doghouse accommodate a V-berth, two quarterberths with  sink, stove and coldbox, making it a pocket cruiser with sitting headroom.  It draws less than four feet, making it an ideal boat to tuck into anchorages denied deeper draught boats.

The Shark’s prompt success was due in no small part to its early racing record.  In 1960, Hinterholler crewed for George Steffan, later President of Mirage Yachts, in the Freeman Cup.  They cleaned up with three 1sts using brisk 18-knot winds to put a leg them and their nearest competitor in the race.  In the 1963 Freeman Cup the Shark did it again.  For small boats, the course was from Niagara-on-the-Lake to Rochester NY, 80 nautical miles along the south shore of Lake Ontario.  There were no spinnakers and no genoas on Sharks in those days and the race was sailed with main and working jib only.

“We thought our biggest competition would be the “Thunderbirds,” Hinterholler said “but after the first surf, we knew that there would be no contest.  We barreled down the course in seven hours and 44 minutes.”

In 1963, using a spinnaker on a close reach across Lake Ontario, Sid Dakin, one of the first to own a Shark, sailed the blockhouse Bay race from Toronto to Olcott, NY, with an adrenaline pumping average speed of 10.2 knots, beating the 56-footer Innisfree on a boat-for-boat basis.  That sort of speed boggled the minds of sailors unaccustomed to semi-displacement hulls.

Racing boats come and racing boats go, but the shark remains.  With its flexible rig and planing abilities, it is as up to date as anything on the market today.  And, with its low-aspect, 7/8ths rig and heavy keel, it has a sea-kindliness and seaworthiness to match its speed.

Hinterholler admits that the Shark’s scantlings are better suited to a tank, but the proof of his wisdom in overbuilding the boat has been in its longevity.  Virtually each of the 2,500 Sharks built in the last 35 years is still sailing and many of the first hulls off the line are still winning their share of races.

The Shark is seem sailing happily in all major Canadian cruising waters, but some owners have taken them much further afield.  In 1972, Clive O’Connor, his wife, two year old baby and their guitar sailed their Shark from Niagara-on-the-Lake to Melbourne, Australia.  They arrived in good form, still speaking to each other and their Shark, at last report, was still being used for research on Australia’s Great Barrier Reef.

Randal Peart sailed his Shark from Windsor and then crossed over to England, cruised the French canals, and then sailed BACK across and cruised the Caribbean for a year.  He’s still alive and well and eccentric. If you’d like to correspond with him, he’d be happy to hear from you at: [email protected]

(Editor’s Note: The text of the above paragraph has been changed from the original, to reflect new information from Randal’s wife, Patricia, received on Sept 11, 2000)

On his return, he reported no structural damage and no bulkheads adrift, but he did ask for a new set of gudgeons to replace his worn ones.

More recently, Bob Lush added a foot to the stern of his Shark to bring it up to a minimum 25-foot size for the OSTAR single-handed transatlantic race.  His biggest problem crossing the Atlantic was getting stuck in the doldrums and listening to empty sails slap for too many mind-destroying days.

The Shark is a forgiving boat which makes it appealing to novices, but with 14 separate lines to tweak, it is as technical as any sailor could wish. An active class association defined the Shark’s measurements and specifications as early as 1966 and in 1984, the association adopted a more formal measurement form patterned after a number of international one-design classes.  The fact that all Sharks, both new and old have been built to these specifications has kept the racing fleet viable and maintained the market value of the boat.

The association is active at the international, national and regional levels giving Shark owners who are not part of a local fleet a point of contact and an active racing program.  In addition to regular club races, there are regional, provincial and national Shark Class regattas.  The highlight of each year is the Shark World Championship, a seven race series held for two consecutive years in North America and, in the third year, in Europe.

Host for the 1994 Shark Worlds, won by Don Ruddy in #268 Dartos, was the Niagara-on-the-Lake Sailing Club, the club Hinterholler helped found.  Fifty-six Sharks competed in the 1994 event  The World Championship in 1995, won by John Clark/Don Ruddy was held in Freidrickshaven on Lake Constance.  Several Canadian Shark sailors competed in this event.

(Editors note:  The host for the World Championship in 1996, won by Jeff Mitchell in #336  Frankly Scarlet, was the Kingston Yacht Club and in 1997, won by Don Ruddy in #268 Dartos, was the Buffalo Canoe Club.  In 1998 the Championship, again won by Don Ruddy,  was sailed June 6 – 12, at the Yachtclub Breitenbrunn, Neusiedlersee, Burgenland, Austria.  The 1999 Championship was sailed at the Royal Canadian Yacht Club in Toronto, Canada and won by Sid Dakin in #1456 “Duck Soup”and the 2000 Championships at Parry Sound on Georgian Bay, in Ontario, was won by Don Ruddy in “Dartos “.  The 2001 Championship also won by Don Ruddy, was held at Yacht-Club Kreuzlingen in Switzerland and the 2002 Worlds is scheduled for Toronto,Ontario at the Mimico Cruising Club)

Class website http://shark24.org/

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SHARK 24 Detailed Review

If you are a boat enthusiast looking to get more information on specs, built, make, etc. of different boats, then here is a complete review of SHARK 24. Built by C&C Yachts and designed by George Hinterhoeller, the boat was first built in 1959. It has a hull type of Fin w/transom hung rudder and LOA is 7.32. Its sail area/displacement ratio 18.01. Its auxiliary power tank, manufactured by undefined, runs on undefined.

SHARK 24 has retained its value as a result of superior building, a solid reputation, and a devoted owner base. Read on to find out more about SHARK 24 and decide if it is a fit for your boating needs.

Boat Information

Boat specifications, sail boat calculation, rig and sail specs, contributions, who designed the shark 24.

SHARK 24 was designed by George Hinterhoeller.

Who builds SHARK 24?

SHARK 24 is built by C&C Yachts.

When was SHARK 24 first built?

SHARK 24 was first built in 1959.

How long is SHARK 24?

SHARK 24 is 6.1 m in length.

What is mast height on SHARK 24?

SHARK 24 has a mast height of 7.01 m.

Member Boats at HarborMoor

The Shark 24 is a 24.0ft fractional sloop designed by George Hinterhoeller and built in fiberglass by C&C Yachts since 1959.

2500 units have been built..

The Shark 24 is a light sailboat which is a good performer. It is reasonably stable / stiff and has a low righting capability if capsized. It is best suited as a day-boat.

Shark 24 for sale elsewhere on the web:

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Review of Shark 24

Basic specs., sailing characteristics.

This section covers widely used rules of thumb to describe the sailing characteristics. Please note that even though the calculations are correct, the interpretation of the results might not be valid for extreme boats.

What is Capsize Screening Formula (CSF)?

The capsize screening value for Shark 24 is 1.89, indicating that this boat could - if evaluated by this formula alone - be accepted to participate in ocean races.

What is Theoretical Maximum Hull Speed?

The theoretical maximal speed of a displacement boat of this length is 6.1 knots. The term "Theoretical Maximum Hull Speed" is widely used even though a boat can sail faster. The term shall be interpreted as above the theoretical speed a great additional power is necessary for a small gain in speed.

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Shark 24 is about 88 kg/cm, alternatively 496 lbs/inch. Meaning: if you load 88 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 496 lbs cargo on the boat it will sink 1 inch.

Sailing statistics

This section is statistical comparison with similar boats of the same category. The basis of the following statistical computations is our unique database with more than 26,000 different boat types and 350,000 data points.

What is Motion Comfort Ratio (MCR)?

What is L/B (Length Beam Ratio)?

What is Displacement Length Ratio?

What is SA/D (Sail Area Displacement ratio)?

What is Relative Speed Performance?

Maintenance

Are your sails worn out? You might find your next sail here: Sails for Sale

If you need to renew parts of your running rig and is not quite sure of the dimensions, you may find the estimates computed below useful.

This section shown boat owner's changes, improvements, etc. Here you might find inspiration for your boat.

Do you have changes/improvements you would like to share? Upload a photo and describe what to look for.

We are always looking for new photos. If you can contribute with photos for Shark 24 it would be a great help.

If you have any comments to the review, improvement suggestions, or the like, feel free to contact us . Criticism helps us to improve.

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• Everything Explained.Today
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Shark 24 Explained

Shark 24 should not be confused with Hai (keelboat) .

The Shark 24 is a Canadian -designed 24 ft sailing yacht which has earned itself a reputation of extraordinary reliability and longevity among sailors both in North America and Central Europe . Having been designed by George Hinterhoeller back in 1959 to cope well even with the harshest conditions found in the Great Lakes region, the vessel has proven to be well suited for extended leisure trips as well as for tough racing. [1]

The Shark 24 was awarded International status by World Sailing in 2000. [2]

George Hinterhoeller grew up in Austria where he sailed the light displacement fin keel sailboats that were common there. By 1959 he had emigrated to Canada and was working for a boat builder in Niagara-on-the-Lake , Ontario . Hinterhoeller decided to design and build a sailboat for himself that was similar to what he had sailed in his youth in Austria. The result was a 22feet plywood boat he named Teeter Totter . Other sailors saw the resulting boat, and how fast it sailed compared to the heavy displacement boats common on the Great Lakes at the time and asked Hinterhoeller to build similar boats for them. Hinterhoeller modified the design, stretching it out to 24feet and started production of what he then called the Shark . The customer who commissioned the fifth hull requested it be built in fibreglass and offered to help Hinterhoeller build it using this new material. The resulting boat was a success and all subsequent Shark produced were built in fibreglass as this resulted in a lighter boat that took far less time to build so was less expensive and required much less ongoing maintenance. [1] [3]

The shark is a light displacement cruising and racing sailboat. It has a 7/8 fractional sloop rig, a small cabin and a self-bailing cockpit. The iron fin keel, combined with a transom hung spade rudder, and a flat run aft allows the hull to ride up on its bow wave and plane under the right conditions, giving the Shark more speed than a displacement hull of the same waterline length. It had a displacement-length ratio of 123, extraordinarily low for its time. [3] [4] [5]

The Shark has a V-berth, two quarter berths, and a small galley with sink, stove and icebox. It has sitting headroom under the small deckhouse. [3]

World Championship

A World Championship Regatta for the Shark 24 class has been continuously contested for over 50 years. The regatta follows a three-year rotation where for two consecutive years the regatta is hosted by the Canadian Shark Class Association in Canada, and the third year it is held in Europe in Austria, Germany, or Switzerland. [6]

• List of sailing boat types

Similar sailboats

• Achilles 24
• Challenger 24
• Columbia 24
• Islander 24
• Islander 24 Bahama
• MacGregor 24
• San Juan 24
• Seidelmann 245

Notes and References

• Web site: The Shark . 9 December 2018 .
• Web site: World Sailing - Shark 24 . 8 December 2018 .
• Web site: Shark . Canadian Yachting . 12 December 2018 .
• Web site: George Hinterhoeller . 12 December 2018 .
• Web site: Royal Canadian Yacht Club Models - Panel 11, Shark 1960 . 12 December 2018 .
• Web site: Shark 24 Racing . 8 December 2018 .

This article is licensed under the GNU Free Documentation License . It uses material from the Wikipedia article " Shark 24 ".

Except where otherwise indicated, Everything.Explained.Today is © Copyright 2009-2024, A B Cryer, All Rights Reserved. Cookie policy .

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Typical Specifications:

LOA: 24’ BOA: 8’ 6”

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The Metal Shark 24 Relentless is a hybrid multi-mission inshore patrol boat designed to operate inshore and in shallow-water areas where draft-limited craft cannot. With its variable deadrise hull and stout welded-aluminum construction, the proven 24 Relentless offers outstanding performance in both calm and rough waters. It is an ideal boat for law enforcement, security, and response missions.

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Console & Helm

The 24 Relentless features a welded aluminum console with integrated hard top. Another available option is a fold-down console, which may be quickly stowed for transport. A large, fixed three-panel windshield with automotive-style fritted glass provides optimum protection and visibility. A large dash houses all electronics, and controls and are easily accessible to the operator. The vessel shown here is equipped with the Raymarine AXIOM Package, which includes a 12” touch screen display with GPS, radar, a heading sensor, a sounder and transducers. It also includes a Raymarine VHF and Antenna and a Ritchie navigator backlit compass. Like all Metal Sharks, the 24 Relentless is a fully custom vessel that is built to order, so the customer may determine the dash components as well as their layout.

The 24 Relentless is available with multiple seating options, including a range of military-stye shock-mitigating seats. The vessel shown here has been equipped with a leaning post helm seat with flip-up bolster cushion to allow for comfortable seated or standing operation. The seat is integrated into a welded aluminum base housing two large locking storage lockers, which may be configured as weapons lockers or for general storage. A fixed bench seat integrated into the forward console provides additional seating, with space beneath to carry a cooler or other gear.

Choice of the United States Coast Guard

The Metal Shark 24 Relentless was selected by the US Coast Guard as the platform for its Special Purpose Craft – Shallow Water (SPC-SW) response boat thanks to its shallow-water capability, ride, and reputation. Metal Shark delivered 90 SPC-SW vessels to the US Coast Guard during the course of this program, which was announced in 2008. Metal Shark SPC-SW vessels are still in service today and stand as a testament to the durability of this proven platform.

For more information about this or any other Metal Shark model, contact us today.

24 Relentless Image Gallery

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Let's Get to Know Each Other

Let's connect, why it's important to partner with a designer on your shark 24 sail.

The design is the most critical part of your new sail. Ensuring the sail fits and performs its best is a must for our crew. The Precision Sails Design team are experts at their craft. Unlike other sail lofts all of our sailors work one-on-one with a designer to perfect their Shark 24 sail.

No Two Shark 24 Sails Are Alike

There are many factors that affect the performance and design of your sails. Location, sailing experience, and weather conditions all come into play when picking the perfect sail. Two mainsails made for two Shark 24’s in California and Florida will have different designs, sailcloth, and options based on what is best for the sailor.

Taking measurements is easy. All sailors work alongside our measurement team to measure and confirm their rig specs. This helps ensure your design is flawless and allows us to extend our Perfect Fit Guarantee to all of our sailors.

Discover the best cloth for your sailing needs, our sail details, or more about how Precision Sails is leading the sail-making industry with innovative new practices.

Proudly offering the largest selection of sailcloth in the industry, our team is always available to help you find your perfect sail. Whether you're a weekend sailor, coastal cruiser, or club racer our team is ready to walk you through the process.

Types of Sails

Precision Sail Loft specializes in producing headsails, mainsails, spinnakers, gennakers, and code zeros. So no matter the type of sail you’re looking for, we can help. Our sails are trusted by cruisers and racers alike from around the globe. Review the sail options and craftsmanship available to customize your dream sail.

Build & Process

Every sail we craft is produced to the highest standards with the best hardware, craftsmanship, and skill-set in the industry. Pair that with Precision Sails' approach to communication and your sailboat will be ready to set sail before you know it.

Unparalleled Commitment To Helping Sailors

As experts in design, communication, and production our team is ready to take on the task of making sails for your boat. Give us a call to get started.

“ I just received my asymmetrical spinnaker, with sock and turtle bag, along with a new 135 Genoa. The entire process was simple and both sales and the design team were in regular contact if there were any questions. The customer portal was easy to use and lets you keep track of where in the process your sails are. Great sails, great service -Graham Edwards (Facebook)

“ The whole team at Precision Sails was fantastic from start to finish. We’ve had a laminate main and genoa made so far and have a spinnaker on the way. They listened carefully to our needs and recommended a great sail cloth. We couldn’t have gotten more bang for our buck! -Noah Regelous (Google)

“ We received our spinnaker and launched it yesterday and I just wanted to let you know how pleased we are with it. The service we received from your company was exceptional and the quality of your product is second to none. We will certainly be return customers in the next few months to replace our main and jib sails and will recommend your company to all our sailing buddies. Once again-thank you.” -Daniel Jackson (Google)

“ we had good communication during the planning stages and the knowledgeable people at precision sails really got me fixed up good! The sails look and work fabulous! my boat sails better than it ever had! couldn’t be more pleased with the product AND the service!” -Fred Jelich (Facebook)

“ Our new furling jib for a Corsair 27 Had to be specially designed due to the height of the furler, but this was accomplished quickly and in short order we had our sail which fits beautifully and has a great shape. It’s everything we could have wanted, high tech design, thoughtfully executed and affordable.” -Nancy Y. (Yelp)

Request a Shark 24 Quote

Looking to buy a new headsail or mainsail for your Shark 24? Request a free quote from Precision Sails for a new custom sail. Our team will work with you to design the perfect sail for you.