Allied Seawind MK II Ketch

1975 — 1982
Designer
Thomas Gillmer
Builder
Allied Boat Company Inc.
Association
Allied Seawind II Home Page
# Built
130
Hull Type
Long Keel
Construction
FG w/balsa deck & coach

Dimensions

Length Overall
31 7 / 9.6 m
Waterline Length
25 5 / 7.8 m
Beam
10 5 / 3.2 m
Draft
4 5 / 1.4 m
Displacement
14,900 lbs / 6,759 kg
Ballast
5,800 lbs / 2,631 kg (Lead)
drawing

Rig and Sails

Type
Masthead Ketch
Reported Sail Area
555 ft2 / 51.6 m2
Total Sail Area
469.6 ft2 / 43.6 m2
Mainsail
Sail Area
203 ft2 / 18.9 m2
P
33 9 / 10.3 m
E
12 0 / 3.7 m
Mast Height
43 0 / 13.1 m
Foresail
Sail Area
266.6 ft2 / 24.8 m2
I
38 9 / 11.8 m
J
13 8 / 4.2 m
Forestay Length
41 1 / 12.5 m
Mizzen
PY
18 6 / 5.6 m
EY
9 1 / 2.8 m

Auxilary Power

Make
Westerbeke
Model
?
HP
27
Fuel Type
Diesel
Fuel Capacity
40 gal / 151 l

Accomodations

Water Capacity
60 gal / 227 l
Holding Tank Capacity
?
Headroom
6 2 / 1.9 m

Calculations

Hull Speed
6.77 knots
Sail Area/Displacement
14.67
under powered
Ballast/Displacement
36.24
less stiff, less powerful
Displacement/Length
401.16
ultraheavy
Comfort Ratio
36.89
moderate bluewater cruising boat
Capsize Screening
1.69
better suited for ocean passages

Notes

From (BlueWaterBoats.org)[http://bluewaterboats.org/allied-seawind-ii-32/]:

Following in the hallowed footsteps of the original Seawind, a salty 30 foot ketch designed by Tom Gillmer that happened to be the first fiberglass sailboat to circumnavigate the globe, the Seawind II is a larger, more comfortable redesign that’s a foot longer, a foot wider, and over 23% heavier. These boats were launched in 1975 by Allied Yachts and they had a reputation for being solidly built, though with a history of inconsistent and uninspiring internal finishing. The company went out of business four times, before finally shutting down for the fifth time in 1981, spelling the end of production for the Seawind II.

Allied Yachts was founded in 1962 on the Hudson River a hundred miles north of New York City in the small town of Catskill as a partnership between a fiberglass boat builder Lunn Laminates and a yacht brokerage of Northrop and Johnson and racing sailor Thor Ramsing. Their first boat, the Seawind, a popular 30’ 6” ketch had the company busy keeping up with demand.

These were still the exciting pioneering days of fibreglass sailboat construction when the material was still considered experimental and hulls were conservatively built extra thick. When New Yorker, Alan Eddy, setoff in 1963 to eventually circle the globe in Apogee, the accomplishment did much to not only put to rest skepticism over fibreglass construction, but also to establish Allied’s reputation for building seaworthy sailboats.

Despite the original Seawind proving itself as a competent bluewater sailboat, it had minimal accommodations that were, at best, cramped. So after over a decade of successful production of the Seawind, Allied approached Gillmer to evolve the design into a successor – the Seawind II. Though it was only 13 inches longer, its beam was 13% wider which resulted in a displacement 23% heavier. The result was a much more comfortable boat with significantly larger internal volume and improved accommodations.

Structurally the new boat was just as sturdy and had improvements over the original construction. The hull was hand-laid and substantially thick and well supported bulkheads that were fiberglassed into place. Furthermore the hull-deck joint, which was prone to leaking in the original Seawind was improved with no expense spared. The new joint was complex, labor intensive to construct but very strong. Both hull and deck had outward flanges at the sheer line. These flanges were coated with sealant and a teak batten placed between them. Hull, deck, and batten were then through-bolted vertically with stainless steel bolts. After the sealant cured over a number of days, the joint was ground flush on the interior of the hull and glassed over heavily. Meanwhile on the exterior a heavy aluminum extrusion was filled with bedding, capped over the flange, and horizontally screwed into the teak batten.

The deck and cabin were of fiberglass cored in balsa wood. All deck hardware was through-bolted and reinforced with fiberglass backing plates to distribute the load. The mast was deck-stepped and supported from below by a substantial oak compression frame that extends into the bilge. Ballast is an internal lead casting glassed into the keel.

There’s very little exterior wood on the Seawind II, even the dorado boxes are molded in, resulting in a low maintenance boat, but also gives her an austere look.

Unusual to see in a sailboat this small is a ketch rig which was offered as standard, there was an optional cutter rig which carried slightly less canvas but had similar performance. As to be expected, Seawind II sails well under heavy sea conditions, but perhaps surprisingly it’s quite competent in light weather as well. She has a very comfortable motion at sea, is well balanced with very little signs of weather helm.

Overall the Seawind II today is a practical and affordable choice as a go-anywhere cruiser. She’s strong without being overly heavy, well constructed and proven. Many examples on the used market have held up well, with later models generally having better finished interiors.

» Seawind II owners association website
» Sailing Magazine, Feb 1999, Used Boat Notebook by John Kretschmer


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