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.
  • 1 / 19
  • 2 / 19
  • 3 / 19
  • 4 / 19
  • 5 / 19
  • 6 / 19
  • 7 / 19
  • 8 / 19
  • 9 / 19
  • 10 / 19
  • 11 / 19
  • 12 / 19
  • 13 / 19
  • 14 / 19
  • 15 / 19
  • 16 / 19
  • 17 / 19
  • 18 / 19
  • 19 / 19

Seller's Description

The Seawind II Ketch is a well known blue water boat designed by the naval architect Thomas Gilmore, gaining fame as the first fiberglass design sailboat to circumnavigate the globe.

Udene has newly installed diesel powered Yanma engine with only 170 hrs on the clock!

She also features wheel steering, full keel & hung rudder for stability & true-tracking in a seaway. This blue water cruising design is famous for it’s good sea-keeping qualities, good handling & comfort down below when offshore in spite of her diminutive size.

This is your opportunity to own a very heavy duty yacht, constructed with a thick fiberglass, hand-laid for precision and integrity suitable for long, offshore trips and also great for exploring the Caribbean Islands.

Contact us today to find out more at info@bviyachtsales.com Follow us on Instagram @bviyachtsales

Interested in buying a different boat? Sign up to our newsletter here for all our best deals: http://eepurl.com/c8lBjn

Equipment: Additional Specs, Equipment and Information:

Boat Name Udene

Specs Keel: Other Hull Shape: Other

Dimensions LOA: 31 ft 7 in Beam: 10 ft 5 in LWL: 25 ft 6 in Maximum Draft: 4 ft 6 in Displacement: 14900 lbs Ballast: 5800 lbs

Engines Engine 1: Engine Brand: Yanmar Engine Model: 3gmf Engine Type: Inboard Engine/Fuel Type: Diesel Drive Type: Direct Drive

Cruising Speed: 6 knots

Tanks Fresh Water Tanks: 2 (60 Gallons) Fuel Tanks: 1 (40 Gallons)

Accommodations Number of single berths: 2 Number of cabins: 1 Number of heads: 1 Seating Capacity: 4

Interior Sleeps 4 Forward Cabin w V-Berth Fold Up Dinette Settees To Both Port and Starboard Enclosed Head Compartment w Fresh Water Sink Bronze Port Lights and Bronze Screens

Engine Yanma 3GMF newly installed 27hp- 170 hours Fresh water cooled Raw water strainer Fuel filter Engine alarm Fuel shut off valve Emergency stop Engine room fire extinguisher Edson Rack and Pinion Steering Stainless Steel Prop Shaft 3 Blade Bronze Prop

Galley and Water Systems Galley & Water systems Oven & 3 burner gas hobs & grill Top load refrigerator Danfrost 12v 110v freezer Teak countertop Stainless steel sink Cutlery, pots pans and utensils Fresh water pump Manual bilge pump

Electrical

Battery charger Battery monitor system Shore power inlet & cord 12v House battery 12v engine battery 1 solar panel Deck, spreader and navigation lights

Deck, Cockpit & Dinghy Mercury 2.3hp outboard engine Avon dinghy Solar panel Swimming ladder Swim platform Dinghy Davits Manual windlass Bow roller Lifelines and stanchions Dodger/Spray hood Cockpit cushions Bimini Top Primarny anchor Brugal 90 chain Secondary CQR anchor Propane tank Fenders and lines 2 life jackets Horseshoe life ring Deck, spreader and Navigation Lights Steering wheel Rack and pinion steering

Electronics GPS Garmin AIS Receiver Depth sounder Plotter Raymarine Wind speed and direction Log-speedometer VHF Compass Wind pilot (New) Stereo & speakers EPIRB

Sails and Rigging Furling genoa Roller furling mainsail Mizzen Sail slab reefing with lazy jacks and sail bag Barlow 10 winch Lewmar 14 winch Lewmar 14 self tailing winch New chain plates (2 years old)

Advertisement

Specs

Designer
Thomas Gillmer
Builder
Allied Boat Company Inc.
Associations
?
# Built
161
Hull
Monohull
Keel
Long
Rudder
Transom hung
Construction
FG

Dimensions

Length Overall
30 6 / 9.3 m
Waterline Length
101 8 / 31 m
Beam
32 9 / 10 m
Draft
13 1 / 4 m
Displacement
12,000 lb / 5,443 kg
Ballast
4,200 lb / 1,905 kg

Rig and Sails

Type
Ketch
Reported Sail Area
502′² / 46.6 m²
Total Sail Area
425′² / 39.5 m²
Mainsail
Sail Area
207′² / 19.2 m²
P
31 9 / 9.7 m
E
12 11 / 4 m
Air Draft
?
Foresail
Sail Area
218′² / 20.3 m²
I
35 6 / 10.8 m
J
12 2 / 3.7 m
Forestay Length
37 7 / 11.5 m
Mizzen
PY
18 2 / 5.5 m
EY
8 5 / 2.6 m

Auxilary Power

Make
Palmer /Gray Marine
Model
M-60
HP
?
Fuel Type
Gas
Fuel Capacity
12 gal / 45 l
Engine Hours
?

Accomodations

Water Capacity
30 gal / 114 l
Holding Tank Capacity
?
Headroom
?
Cabins
1

Calculations

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.

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

6.35 knots
Classic formula: 6.57 knots
Sail Area/Displacement
15.3
<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.
15.33
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
35.0
<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

35.0
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
386.8
>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.

Formula

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

  • D: Displacement of the boat in pounds.
  • LWL: Waterline length in feet
386.76
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
36.6
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
36.63
<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
1.6
<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
1.62
<2: better suited for ocean passages
>2: better suited for coastal cruising

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

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

View on SailboatListings.com

Advertisement

Embed

Embed

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.
Measurements:

©2024 Sea Time Tech, LLC

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