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Seller's Description

Sails well w/ lots of sails Aging owner needs to downsize Boards under cushions have centre rot

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Specs

Designer
George Hinterhoeller
Builders
Halman Manufacturing Co.
Hinterhoeller Yachts Ltd.
C&C Yachts
Association
Shark Class - International
# Built
2500
Hull
Monohull
Keel
Fin
Rudder
Transom hung
Construction
FG

Dimensions

Length Overall
23 11 / 7.3 m
Waterline Length
20 0 / 6.1 m
Beam
6 10 / 2.1 m
Draft
3 3 / 1 m 3 3 / 1 m
Displacement
2,200 lb / 998 kg
Ballast
670 lb / 306 kg

Rig and Sails

Type
Masthead Sloop
Reported Sail Area
191′² / 17.7 m²
Total Sail Area
191′² / 17.7 m²
Mainsail
Sail Area
117′² / 10.9 m²
P
22 11 / 7 m
E
10 2 / 3.1 m
Air Draft
?
Foresail
Sail Area
73′² / 6.8 m²
I
20 0 / 6.1 m
J
7 2 / 2.2 m
Forestay Length
21 3 / 6.5 m

Auxilary Power

Make
yamaha
Model
short leg
HP
8
Fuel Type
gasoline
Fuel Capacity
1 gal / 5 l
Engine Hours
15

Accomodations

Water Capacity
0 gal / 0 l
Holding Tank Capacity
?
Headroom
6 6 / 2 m
Cabins
1

Calculations

Hull Speed
8.3 kn
Classic: 5.99 kn

Hull Speed

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.

Formula

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

A more accurate formula devised by Dave Gerr in The Propeller Handbook replaces the Speed/Length ratio constant of 1.34 with a calculation based on the Displacement/Length ratio.

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

8.28 knots
Classic formula: 5.99 knots
Sail Area/Displacement
18.0
16-20: good performance

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.

Formula

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.
17.97
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
30.7
<40: less stiff, less powerful

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.

Formula

Ballast / Displacement * 100

30.66
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
122.5
100-200: light

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.

Formula

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

  • D: Displacement of the boat in pounds.
  • LWL: Waterline length in feet
122.54
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
12.3
<20: lightweight racing boat

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.

Formula

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam1.33)

  • D: Displacement of the boat in pounds
  • LWL: Waterline length in feet
  • LOA: Length overall in feet
  • Beam: Width of boat at the widest point in feet
12.34
<20: lightweight racing boat
20-30: coastal cruiser
30-40: moderate bluewater cruising boat
40-50: heavy bluewater boat
>50: extremely heavy bluewater boat
Capsize Screening
2.1
>2.0: better suited for coastal cruising

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.

Formula

CSV = Beam ÷ ³√(D / 64)

  • Beam: Width of boat at the widest point in feet
  • D: Displacement of the boat in pounds
2.1
<2: better suited for ocean passages
>2: better suited for coastal cruising

Notes

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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