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Seller's Description

A very rare Westsail 39 build in Costa Mesa California by Westsail just before they shut down their operation and sold their molds. The vessel is fast, seaworthy and a head turner. Designed by Bob Perry, she is fast and seaworthy, could be raced locally or taken around the world.

Overall in good condition for a boat of her age.

The interior was finished by master craftsman Lon Woodrum.

She is a must see, don’t miss out on this very rare opportunity.

Equipment: Auto helm, Wind vane steering, GPS, SSB, VHF, emergency rudder and tiller, etc

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Specs

Designer
Robert Perry
Builders
Down East Yachts Inc.
Westsail Corporation
Association
Westsail Owners Association
# Built
11
Hull
Monohull
Keel
Fin
Rudder
Skeg
Construction
FG

Dimensions

Length Overall
38 8 / 11.8 m
Waterline Length
127 11 / 39 m
Beam
39 4 / 12 m
Draft
19 0 / 5.8 m
Displacement
21,300 lb / 9,662 kg
Ballast
8,400 lb / 3,810 kg

Rig and Sails

Type
Cutter
Reported Sail Area
732′² / 68 m²
Total Sail Area
732′² / 68 m²
Mainsail
Sail Area
342′² / 31.8 m²
P
45 0 / 13.7 m
E
15 2 / 4.6 m
Air Draft
?
Foresail
Sail Area
390′² / 36.2 m²
I
49 6 / 15.1 m
J
15 8 / 4.8 m
Forestay Length
51 11 / 15.8 m

Auxilary Power

Make
Volvo
Model
MD-11C
HP
?
Fuel Type
Diesel
Fuel Capacity
?
Engine Hours
?

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?
Cabins
2

Calculations

Hull Speed
9.7 kn
Classic: 8.1 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

9.68 knots
Classic formula: 8.1 knots
Sail Area/Displacement
15.2
<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.
15.24
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
39.4
<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

39.43
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
195.3
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
195.3
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
32.7
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.

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
32.69
<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
1.7
<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.

Formula

CSV = Beam ÷ ³√(D / 64)

  • Beam: Width of boat at the widest point in feet
  • D: Displacement of the boat in pounds
1.71
<2: better suited for ocean passages
>2: better suited for coastal cruising

Notes

Also known as WESTSAIL 11.8, FAIR WEATHER 39, FAIR WEATHER MARINER 39, MARINER 39. As the WESTSAIL 39 it was introduced just at a point when Westsail Inc. was approaching bankruptcy. The molds, (and, according to some accounts, a few unfinished hulls) eventually ended up in TAIWAN where later boats, (now called FAIR WEATHER MARINER 39), were completed. All together, it is thought that around 30 boats of this design were completed.
Shoal draft: 4.67’/1.42m

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

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