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Seller's Description

1977 ODay 25

Includes slip at Aqualand Marina till 1 April 2023

Swing keel New bottom and hull paint Oct 2021 New interior and cockpit cushions New 130 Jib New Bimini New mainsail cover Solar vent New cabin flooring Dual burner gas stove (uses 1lb coleman canisters) Electric Running water sink with electric drain Air Conditioner (110) 3 110 dual plug outlets (shore power) LED cabin lighting USB and cigarette type outlets 30 AMP shore power Honda 9.9 with electric start and dedicated starter battery (overhauled Aug 2022) with solar charger 28 Gal fresh water tank 100w solar panel with Renogy battery and solar charger Portable chemical toilet Custom v-berth full length bed (fits any size person with ease) New wall coverings No leaks Ice box has drain into auto pump bilge Great sailboat for weekend stays Sleeps 4 adults comfortably New jib sheets Wider and deeper steps into the cabin from the companionway

Equipment: See description

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Specs

Designers
Raymond Hunt (C.R. Hunt & Assoc.)
John Deknatel
Builders
Bangor Punta Corp.
O'Day Corp.
Associations
?
# Built
2898
Hull
Monohull
Keel
Stub + Centerboard
Rudder
?
Construction
FG

Dimensions

Length Overall
25 0 / 7.6 m
Waterline Length
20 11 / 6.4 m
Beam
8 0 / 2.4 m
Draft
2 3 / 0.7 m 2 0 / 0.6 m
Displacement
4,010 lb / 1,818 kg
Ballast
1,830 lb / 828 kg (Lead)

Rig and Sails

Type
Sloop
Reported Sail Area
269′² / 25 m²
Total Sail Area
269′² / 25 m²
Mainsail
Sail Area
110′² / 10.2 m²
P
24 6 / 7.5 m
E
8 11 / 2.7 m
Air Draft
?
Foresail
Sail Area
159′² / 14.8 m²
I
29 11 / 9.1 m
J
10 7 / 3.2 m
Forestay Length
31 9 / 9.7 m

Auxilary Power

Make
?
Model
?
HP
?
Fuel Type
?
Fuel Capacity
?
Engine Hours
?

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?
Cabins
0

Calculations

Hull Speed
7.4 kn
Classic: 6.14 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

7.36 knots
Classic formula: 6.14 knots
Sail Area/Displacement
17.1
16-20: good performance

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.
17.06
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
45.5
>40: stiffer, more 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

45.54
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
193.3
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
193.28
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
17.4
<20: lightweight racing 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
17.4
<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
>2.0: better suited for coastal cruising

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
2.02
<2: better suited for ocean passages
>2: better suited for coastal cruising

Notes

One of company’s most successful models and in production for nearly a decade.
A majority were delivered with a keel/cb, but a fixed keel version was also available (Draft:4.50’/1.37m), as was a taller rig.
I: 32.00’ / 9.75m
J: 10.60’ / 3.23m
P: 26.50’ / 8.08m
E: 9.00’ / 2.74m
Yanmar inboard diesel available as an option.

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

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