• 1 / 16
  • 2 / 16
  • 3 / 16
  • 4 / 16
  • 5 / 16
  • 6 / 16
  • 7 / 16
  • 8 / 16
  • 9 / 16
  • 10 / 16
  • 11 / 16
  • 12 / 16
  • 13 / 16
  • 14 / 16
  • 15 / 16
  • 16 / 16

1964 Allied Seawind

Toms River, New Jersey, United States
$20,000 USD

These were the first fiberglass boats to circumnavigate the ocean and boy do they show it at every plow and curl of a swell. The kindliest steering boat I’ve ever had the chance to pilot, walk away and come back, make a sandwich, kiss the girl on the bow & check your currents tables: she’ll still be driving straight.

But anywho- I’ve had the boat for a little bit and love her but need to scale down for something smaller and trailerable.

Tons of extras, and in grand condition, new auto-tiller, painted soles, mizzen, etc.

Also considering trades for a Cape Dory Typhoon/ trailer or type.

Email for details. My name is Henry.

Equipment: 2017 EV-100 Autopilot w/ P70 controller. 2017 new breaker panels professionally installed. VOlatage/ Amp Meters included. Standard Horizon VHF Radio Garmin GPS 2017 ACR Global Fix V4 Cat 2 EPIRB Two Mizzen Sails, One Origional, 2017 one North Sail Cut. One Mainsail Original two jib one Original, resewn (2017) 2017 New Mizzen Halyard 4 Anchors, 2 mounted (45 lb Manson, Lewmar Claw (Both with 150 ft of galvanized chain) & 2 stern anchors, one danforth another 15 lb Baldt. Origio 6000 Alcohol Stove W/ oven. Both in working condition and with adequate denatured alcohol suppply. Many spares for engine, gaskets (Yanmar 3GM)

Much Much More, just ask.

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

View on SailFarYachts.com


Thomas Gillmer
Allied Boat Company Inc.
# Built
Transom hung


Length Overall
30 6 / 9.3 m
Waterline Length
30 4 / 9.3 m
8 11 / 2.7 m
4 5 / 1.4 m
12,000 lb / 5,443 kg
4,200 lb / 1,905 kg

Rig and Sails

Reported Sail Area
502′² / 46.6 m²
Total Sail Area
425′² / 39.5 m²
Sail Area
207′² / 19.2 m²
31 9 / 9.7 m
12 11 / 4 m
Air Draft
Sail Area
218′² / 20.3 m²
35 6 / 10.8 m
12 2 / 3.7 m
Forestay Length
37 7 / 11.5 m
18 2 / 5.5 m
8 5 / 2.6 m

Auxilary Power

Palmer /Gray Marine
Fuel Type
Fuel Capacity
12 gal / 45 l
Engine Hours


Water Capacity
30 gal / 114 l
Holding Tank Capacity


Hull Speed
6.4 kn
Classic: 6.57 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

6.35 knots
Classic formula: 6.57 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: 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.


Ballast / Displacement * 100

<40: less stiff, less powerful
>40: stiffer, more powerful
>350: ultraheavy

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


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



Embed this page on your own website by copying and pasting this code.

Similar Sailboats For Sale

Great choice! Your favorites are temporarily saved for this session. Sign in to save them permanently, access them on any device, and receive relevant alerts.

We will occasionally send you relevant updates. You can opt out or contact us any time.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.


Get occassional updates about new features or featured sailboats.
You can opt out or contact us any time.

Made with ♥ by the founders of Refit Guide
©2021 Sea Time Tech, LLC

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.