Sailboat

Allied Seawind

1962 — 1982

Allied Seawind is a 30.50 ft / 9.30 m sailboat designed by Thomas Gillmer and built by Allied Boat Company Inc. (USA) between 1962 and 1982.

Designer: Thomas Gillmer

Builder: Allied Boat Company Inc.

Hull Type: Long keel w/trans. hung rudder

Construction: FG

Dimensions

Length Overall: 30.50 ft / 9.30 m

Waterline Length: 24.00 ft / 7.32 m

Beam: 9.25 ft / 2.82 m

Draft: 4.20 ft / 1.28 m

Displacement: 12,000 lb / 5,443 kg

Ballast: 4,200 lb / 1,905 kg

Rig and Sails

Type: Masthead Ketch

Reported Sail Area: 502.00 ft² / 46.64 m²

Total Sail Area: 424.82 ft² / 39.47 m²

Mainsail

Sail Area: 206.90 ft² / 19.22 m²

P: 31.83 ft / 9.70 m

E: 13.00 ft / 3.96 m

Mast Height

Foresail

Sail Area: 217.93 ft² / 20.25 m²

I: 35.58 ft / 10.84 m

J: 12.25 ft / 3.73 m

Est. Forestay Len.: 37.63 ft / 11.47 m

Mizzen

PY: 18.16 ft / 5.54 m

EY: 8.50 ft / 2.59 m

Spinnaker

SPL/TPS

ISP

Auxilary Power

Make: Palmer /Gray Marine

Model: M-60

HP: ?

Type: Gas

Fuel Capacity: 12 gals / 45 L

Accomodations

Water Capacity: 30 gals / 114 L

Holding Tank Capacity: ?

Headroom: ?

Calculations

Hull Speed: 6.56 knots

Sail Area/Displacement: 15.32
under powered

Ballast/Displacement: 35
less stiff, less powerful

Displacement/Length: 387.52
ultraheavy

Comfort Ratio: 36.67
moderate bluewater cruising boat

Capsize Screening: 1.62
better suited for ocean passages

Notes

Originally designed for Kaiser Gale Force Yachts which sold the molds to Allied Boat Co. After changing the cabin top and port arrangement, the first boat appeared in 1962.
Early builders under contract were Lunn Laminates of Port Washington, NY and F.L. Tripp & Sons, Westport, MA.
(Allied eventually had it’s own large plant in the Catskills, NY.)
The SEAWIND was the first, as well as one of the last, boats built by Allied Boat Company. In 1978 it was brought back into production and actually built simultaneously with the newer SEAWIND II.
Also offered with a sloop rig. (with mast stepped farther aft.)
I: 35.58’/10.84m
J: 13.16’/4.01m
P: 31.83’/9.70m
E: 14.25’/4.34m

Suggest Improvements

Source: sailboatdata.com / CC BY