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Seller's Description

This Allmand 31 is built to sail. This Allmand 31 was built by builders known for their performance and sea-worthy vessels. These hulls were made for sailing in shoals and deep water depending on the adventure you seek!

The Allmand 31 has a very wide beam of 11’ 4” that makes the interior more spacious and features a 6’ 4” headroom that also makes the boat more appealing for most sailors.

The mast is stepped on deck and has a stainless steel compression post that sits on the ballast.

All the through-hulls and seacocks are bronze and part of the grounding system along with the rudder and drive shaft.

VHF Radio and Nw hand held VHS radio New Garmin depth finder with charts (velcro mounted to cockpit dining table) 2500watt Cobra Invertor E-Pirb Autohelm 5000 WP- autopilot needs to be remounted Bonding wires connect for electrolysis protection connected to all through hulls and stuffing box 1 bilge pump wired to batteries, 1 auxilary 500gal/minute bilge pump w/switch at panel, whale hand operated pump, 2 hand held manual bilge pump Lots of new marine 12 gauge electronic wiring interior with 110 outlets, electronic repair parts, multi meter, light bulbs, etc.

SHIP SYSTEMS 2-20lb propane tanks in vented locker Par head & holding tank 2Y-valves for overboard or pump out deck fitting (new 2000) Engine Raw water system cleaned and rebuilt New Hot & Cold pressure PEX water system, New water pump, On demand heater for shower New Jabsco hand pump for toilet Rebuilt double macerator black water system with holding tank, odor filter (no smells, hardly used) New par pump for head floor drain - switch at panel DECK & RIGGING 40lb Plow………… w/200’ Chain/rope rode 30lb Danforth anchor w/75 Chain/rope rode 20lb Plow stern anchor 150 rope rode Dock lines and Fenders, 100’s of feet extra lines Deck-stepped rig single spreader Boom Vang, All new Internal Lines mast & Boom Roller Furling on head stay 2 Mainsheets, 1 Jib 4 Halyard & Furling Winches with clutches refurbished and lubed Temporary Plastic dodger and bimini Lots of extra sail rigging MISC. 5 offshore life jackets, Engine spares box w/ belts, filters, impellers etc, Flairs, 2 spot lights Bosons chair, Mast Steps, 2 Fire extinguishers, Cockpit cushions, 1 Solar vents main and twin cabin-not functioning, Transom Outboard Motor Bracket, Transom boarding ladder, Binoculars, 1 aluminum & 1 chrome winch handles, extra prop, Katadyne Survivor 35 hand pump Water maker, All teak refinished, many ceiling panels replaced, new vinyl wall panels, Inflatable dunnel bags to prevent sinking, Ditch bag, Hull Painted Summer 2020, Dive gear, Deck wood treated with Sikkens Cetol. 3 Hatches refitted, stainless burglar proof bolt on hath panels, Swinging companionway doors, and reinforced sliding door All the above equipment is included in sale, Seller invested $20,000. in parts and labor over the last

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Specs

Designer
Walter Scott
Builder
Allmand Boats Inc.(USA)
Association
Allmand Owners
# Built
?
Hull
Monohull
Keel
Fin
Rudder
Skeg
Construction
FG

Dimensions

Length Overall
30 8 / 9.4 m
Waterline Length
27 11 / 8.5 m
Beam
11 3 / 3.5 m
Draft
3 10 / 1.2 m
Displacement
11,100 lb / 5,035 kg
Ballast
4,300 lb / 1,950 kg (Lead or Iron)

Rig and Sails

Type
Sloop
Reported Sail Area
461′² / 42.8 m²
Total Sail Area
461′² / 42.8 m²
Mainsail
Sail Area
215′² / 20 m²
P
34 4 / 10.5 m
E
12 6 / 3.8 m
Air Draft
?
Foresail
Sail Area
246′² / 22.9 m²
I
41 0 / 12.5 m
J
12 0 / 3.7 m
Forestay Length
42 8 / 13 m

Auxilary Power

Make
Universal
Model
M16 or M35
HP
?
Fuel Type
Diesel
Fuel Capacity
28 gal / 106 l
Engine Hours
?

Accomodations

Water Capacity
40 gal / 151 l
Holding Tank Capacity
?
Headroom
?
Cabins
?

Calculations

Hull Speed
8.1 kn
Classic: 7.08 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

8.07 knots
Classic formula: 7.08 knots
Sail Area/Displacement
14.8
<16: under powered

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.
14.82
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
38.7
<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

38.73
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
227.7
200-275: moderate

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
227.69
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
23.4
20-30: coastal cruiser

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
23.38
<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
2.0
>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
2.03
<2: better suited for ocean passages
>2: better suited for coastal cruising

Notes

First introduced as the SAIL 31.
A similar model was advertised as the ALLMAND 312 (same hull and deck) with some differences in the interior layout.
Tall rig:
I: 43.0’/13.11m
J: 12.0’/3.66m
P: 36.3’/11.06m
E: 12.5’/3.81m
Dimensions from orig. builder literature.

This listing is presented by PopYachts.com. Visit their website for more information or to contact the seller.

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