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2098 Martin Boat Works Martin 243

Listed
$17,950 USD

Seller's Description

It planes easily, and this is the boat you tell stories to your friends about.

The Martin was designed like an Aussie 18 the sales brochure says. It is very comfortable, and capable of big speeds (potential). It is fun and easy to sail under 12 knots TRUE. Everyone is a rock star. Above 15 knots TRUE, it requires skill. We have recorded over 23 knots on the speedo (not GPS). It put a smile on us. Sailed by 2 in light air, 4 in big San Francisco summer air. It has been called a mono-maran by some crew members.

The Martin 243 is a 24.0ft fractional sloop designed by Don Martin and built in fiberglass by Martin Yachts Ltd. (CAN).

14 units have been built.

The Martin 243 is an ultralight sailboat which is a Very high performer. It is reasonably stable / stiff and has a low righting capability if capsized. It is best suited as a racing boat.

This is my second Martin 243. My first Martin 243 was the prototype (#1). This boat (#9 out of 14 made) is a fast and evolved racer. This boat is MUCH better than new. It is fully race ready:

technical running rigging, Faired keel and rudder. Bottom just completing full bottom and rudder fairing. Has not been waxed yet.

Stored dry, on the hard, Full full boat cover: bow to stern, topsides/over boom to below the keel (see picture). Cost over $5K. 1 aluminum low road trailer, spare tire, new bearings (See picture). Outboard: 4 HP.

Gin pole, hull lifting straps, and keel lift with winch.

Fully race worthy and a consistent podium finisher.

Unbelievable boat on a lake: best capability is over 3 knots to under 18. Comfortable and DRY (you feet/socks will get wet). Feels a

Equipment: multiple new sails, outboard, aluminum trailer, spare tire,Multiple new racing sails:

A3 Reaching kite. A2 A/P kite,

Runner modified white and blue,

Great square top Main, Another lightly used light air kevlar pin tail. One jib in terrific condition. All with hanks. One new unused jib = STILL IN THE BAG.

New kite launcher.

Multiple excellent backup practice sails. Updated running rigging, Tylaska shackles/snap shackles. Main and jib 2:1 halyards Contemporary racing equipment throughout. New standing rigging, technical running rigging,

Specs

Designer
Don Martin
Builder
Martin Yachts Ltd.
Associations
?
# Built
14
Hull
Monohull
Keel
Lifting
Rudder
?
Construction
FG

Dimensions

Length Overall
24′ 0″ / 7.3 m
Waterline Length
24′ 0″ / 7.3 m
Beam
8′ 0″ / 2.4 m
Draft
5′ 8″ / 1.8 m
Displacement
1,450 lb / 658 kg
Ballast
430 lb / 195 kg

Rig and Sails

Type
Sloop
Reported Sail Area
450′² / 41.8 m²
Total Sail Area
?
Mainsail
Sail Area
?
P
?
E
?
Air Draft
?
Foresail
Sail Area
?
I
?
J
?
Forestay Length
?

Auxilary Power

Make
?
Model
?
HP
?
Fuel Type
?
Fuel Capacity
?
Engine Hours
?

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?
Cabins
?

Calculations

Hull Speed
12.2 kn
Classic: 6.57 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

12.24 knots
Classic formula: 6.57 knots
Sail Area/Displacement
56.2
>20: high 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.
56.19
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
29.6
<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

29.64
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
46.8
<100: Ultralight

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
46.75
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
5.6
<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
5.59
<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
2.9
>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
2.91
<2: better suited for ocean passages
>2: better suited for coastal cruising

Notes

Beam incl. wings 15’.

Sail Area:
Main: 318 sq ft.
Jib: 135 sq ft.
Spinnaker: 555 sq ft
Crew: 3-4 persons, Max crew wt: 700 lbs

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