Seller's Description
1981 J Boats J-24, Sloop/Racer.
History and background on this vessel:
SCOUNDREL has won many races over the years, due to the energies of her crew (with the oldest average age in the Ketchikan fleet!), the design and construction of her sails (several of them made by Louie Bartos, Mariner Sails), and the efficiency of the boat herself. There are additional sails in the listed inventory that the manufacture is not known at this time.
A safety note: The lazarettes which originally opened in the cockpit bench have been fiber-glassed closed and are only accessible from the cabin. The compartment doors are water-tight, eliminating any chance of flooding and endangering the boat and crew.
The interior cabin has a sink and a place for a porta-potti. The vessel also has the pads for berths.
The seller reports the boat has spent summers in saltwater, winters on the hard.
An extensive list of sails and rigging included with the boat is detailed below:
SAILS INVENTORY: 4 Mainsails 5 Jibs 5 Spinnakers
RIGGING: Cunningham Boom Vang Carbon-fiber spinnaker pole Aluminum spinnaker pole Traveler
SAFETY GEAR: 2 helmets for cockpit crew. Ladder Horseshoe Life Preserver
OTHER: 3.5 Hp outboard - lightly used Tohatsu Radio, Compasses, Timing devices, wind and boat speed indicators Jib and spinnaker - both light and heavy, and main sheets 3 boat fenders Tiller Extender Winch handles Anchor Tool kit Boat cushions
Specs
- Designer
- Rod Johnstone
- Association
- J/24 Class Association
- # Built
- 5400
- Hull
- Monohull
- Keel
- Fin
- Rudder
- Transom hung
- Construction
- FG balsa cored hull & deck
Dimensions
- Length Overall
- 24′ 0″ / 7.3 m
- Waterline Length
- 20′ 0″ / 6.1 m
- Beam
- 8′ 9″ / 2.7 m
- Draft
- 4′ 0″ / 1.2 m
- Displacement
- 3,100 lb / 1,406 kg
- Ballast
- 950 lb / 431 kg (Lead)
Rig and Sails
- Type
- Sloop
- Reported Sail Area
- 262′² / 24.3 m²
- Total Sail Area
- 261′² / 24.3 m²
Mainsail
- Sail Area
- 136′² / 12.7 m²
- P
- 27′ 11″ / 8.5 m
- E
- 9′ 8″ / 3 m
- Air Draft
- ?
Foresail
- Sail Area
- 125′² / 11.6 m²
- I
- 26′ 2″ / 8 m
- J
- 9′ 6″ / 2.9 m
- Forestay Length
- 27′ 11″ / 8.5 m
Auxilary Power
- Make
- ?
- Model
- ?
- HP
- ?
- Fuel Type
- ?
- Fuel Capacity
- ?
- Engine Hours
- ?
Accomodations
- Water Capacity
- ?
- Holding Tank Capacity
- ?
- Headroom
- ?
- Cabins
- ?
Calculations
- Hull Speed
-
7.5 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
- Sail Area/Displacement
-
19.7
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.
- 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
- Displacement/Length
-
172.6
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
- Comfort Ratio
-
12.5
<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
- Capsize Screening
-
2.4
>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
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