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Seller's Description

Pearson 365 ketch. Built in 1978, she is a masthead sloop. Length overall is 36.5 while LWL is 30. Hull speed is 7kts. Draft is 4.5 so she doesn’t have a problem in shallow water. Her main mast is 46. The engine is a Perkins 4.108 (10hp) with a V-drive transmission which was serviced last year at a local boat yard. Since being serviced, the engine has less than 50 hrs and upon rebuild we purchased a new High Pressure Diesel pump ($$$). A new bottom job was completed last year and amazingly had no blistering. She has both a 50 gallon fresh water tank with a working water pump and a 50 gallon diesel tank. Neither myself or the previous two owners have used the blackwater tank or the head so you wont have an issue with pump out or funky smells. Two anchors are included: one plow and one danforth. Sails are in fair condition although she comes with a second main which is in better condition. Both the mizzen and main are missing a few battens. The headsail is on a recently serviced roller furler which has never given us a problem. New sheets are included on the genoa. New main block. All Lewmar winches were serviced last year. Includes a bimini although the cloth will likely need replacing in the next 5 or 6 years. We replaced the port side toe rail last year; however the starboard side isn’t as new. No softspots and both deck hatches function although the main cabin has a drip.

The Galley is U shaped. It has cupboard storage and an Icebox. There is a Force 10 stove which uses a propane locker in a separate tank in the rear lazarette. The pedestal needs a compass; however, I am including an older one which could be serviced, fabricated, sold or traded for the correct size. New wheel and the steering chain has just been refurbed and works like a charm. The rudder is a fin on skeg type. The depth sounder, knot reader hour counter work although I have not connected the temperature gauge on the new control panel- Trans Atlantic Diesel. The standing rigging could be replaced but works fine.

Equipment: Perkins 4.108 Engine. V-drive. Max-prop folding propeller. Sails: Main, Mizzen, and Head. Two extra included in better condition. Water heater (6 gallons). Beacon



William Shaw
Pearson Yachts
# Built


Length Overall
36 6 / 11.1 m
Waterline Length
29 11 / 9.1 m
12 0 / 3.7 m
4 5 / 1.4 m
17,700 lb / 8,029 kg
7,300 lb / 3,311 kg (Lead)

Rig and Sails

Reported Sail Area
570′² / 53 m²
Total Sail Area
570′² / 52.9 m²
Sail Area
247′² / 23 m²
37 11 / 11.6 m
12 11 / 4 m
Air Draft
Sail Area
322′² / 30 m²
43 0 / 13.1 m
14 11 / 4.6 m
Forestay Length
45 6 / 13.9 m

Auxilary Power

Fuel Type
Fuel Capacity
50 gal / 189 l
Engine Hours


Water Capacity
150 gal / 568 l
Holding Tank Capacity


Hull Speed
7.7 kn
Classic: 7.34 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.


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

7.73 knots
Classic formula: 7.34 knots
Sail Area/Displacement
<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.


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.
<16: under powered
16-20: good performance
>20: high performance
>40: stiffer, more 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.


Ballast / Displacement * 100

<40: less stiff, less powerful
>40: stiffer, more powerful
275-350: heavy

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.


D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

  • D: Displacement of the boat in pounds.
  • LWL: Waterline length in feet
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
30-40: moderate bluewater cruising 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.


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
<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: better suited for ocean passages

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.


CSV = Beam ÷ ³√(D / 64)

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


Available as sloop, ketch, or cutter.

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