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Allmand 23 HMS, 1976 $6,500
Motor sailing yacht. Yanmar 1GM10 diesel inboard. Swing keel. LOA: 23’9”. LWL: 19’10”. Beam 8’. Displacement: 3360 lbs.. Ballast: 600 lbs. Draft (board up): 16”. Draft (board down): 4’8”. Sail area: 270 sq. ft. Mast height: 26’9” Berths: 4- convertible dinette and V-bunk. Cockpit length: 6’3”. Standing head room: 6’.
Accomodations:
8000 Btu Air Conditioner SS sink. Cupboards. Head. Forward V-berth. Starboard berth converted from dinette.. Six opening ports, large forward hatch, opening front windows. Hanging locker.
Electrical:
3 Group 24 batteries. Automatic battery combiner Battery charger, dual output 15 Amp each. Solar charge controller for 50W panel. 110 shore power. Maxwell electric anchor windlass. Electric swing keel winch. LED Running lights. Flood lights. Mast light. Several high output USB outlets. Depth meter. 2 Nicro solar vents
Sail/Deck:
Roller furling jib. Self tending club stay sail. Main sail with cover. Tiller steering. Anchor/rode. Teak toe rails. Teak hand rails. Padded vinyl cockpit seats. Fire extinguisher. Bimini top with full cockpit enclosure.
Trailer shown in pictures is not rated for weight of this boat and not suitable for safe long distance towing.
I don’t have any paperwork for this trailer. Trailer is free with the boat and can be used for storage or local moves. Located in St. Petersburg FL. or phone 727-644-5286
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
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
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
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
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
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 Beam1.33)
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)
Also called HMS 23.
Available with fixed or swing keel.
Inboard power available as an option.
Built in very small numbers.
Dimensions from builders literature.
This listing is presented by SailingTexas.com. Visit their website for more information or to contact the seller.
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