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Seller's Description

The O’Day 40 offers exceptional value for coastal cruising. The combination of good sailing performance, a roomy interior, two-stateroom layout, sugar-scoop transom, and shoal draft make the 40 a good choice for an affordable East Coast and Bahamas cruiser.

This vessel will need a little elbow grease but has the potential to be an excellent family cruiser, liveaboard or charter boat for the right buyer. Inflatable dinghy and Honda outboard are included. Accommodations: Roomy teak interior that sleeps 7 between two staterooms and the main cabin. One head forward, galley aft to port, nav station and aft stateroom aft to starboard. Four deck hatches and 7 opening ports let in plenty of light and air. Westerbeke W46 inboard diesel w/ 1427 hours. Direct drive with Max-prop.

Equipment: Electrical Systems: 2 Group 31 Starting Batteries, updated wiring 2 Group 31 House Batteries, updated wiring C-Charger 3000 Series Battery Charger 800W Inverter H/W Heater XinTex propane valve control system Pioneer stereo system 30-amp shore power system with cord 12V outlets in cabin and cockpit

Electronics & Navigation: Equipment Datamarine Depth, Speed & Wind (on cockpit bulkhead) Raymarine C120W chartplotter (at helm) Raymarine Radar (displayed on C120W at helm) New Raymarine Evolution series belowdecks autopilot (installation needs completion) Icom IC-M602 VHF radio (at Nav Station)j with RAM Mic in cockpit Binnacle Compass Automatic Hailer

ON DECK: New double bow roller stemhead fitting Fortress FX 23 Anchor Lofrans Tigres Electric Windlass (in chain locker) w/ foot switch on fordeck (2) chrome cowl vents (5) opening hatches (7) opening ports Support Rail around the mast and over the cowl vents Teak grab rails along port & starboard cabin trunk Swim Ladder Outboard motor crane on aft deck Edson outboard motor mount on stern rail Brackets on the stern rail for an inflatable Fold-up step down to swim platform Propane grill

COCKPIT: Wheel steering with Lewmar Folding wheel Morse engine controls at helm Cockpit cushions Large lazarette locker to port Dodger Bimini w/ Full Enclosure Teak cockpit table & drink holder Manual bilge pump

Sails & Rigging: Keel-stepped, double-spreader, masthead sloop rig 2012 Doyle Main with Stack Pack cover 135% Genoa on Harken Jib Furler Spinnaker with sock Whisker pole Rigid Boom Vang All lines lead aft to cockpit through line clutches

Additional Information 8 ft. Inflatable dinghy included Honda outboard motor included Lifesling MOB module Misc. spare parts Ample dock lines and fenders Several Fire Extinguishers Max-Prop Lasdrop Dripless Stuffing Box

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Specs

Designers
Philippe Briand
Raymond Hunt (C.R. Hunt & Assoc.)
Builders
Bangor Punta Corp.
O'Day Corp.
Associations
?
# Built
180
Hull
Monohull
Keel
?
Rudder
?
Construction
FG

Dimensions

Length Overall
39 6 / 12.1 m
Waterline Length
39 11 / 12.2 m
Beam
12 0 / 3.7 m
Draft
4 0 / 1.2 m
Displacement
18,000 lb / 8,165 kg
Ballast
6,600 lb / 2,994 kg (Lead)

Rig and Sails

Type
Sloop
Reported Sail Area
699′² / 64.9 m²
Total Sail Area
699′² / 64.9 m²
Mainsail
Sail Area
314′² / 29.2 m²
P
44 3 / 13.5 m
E
14 2 / 4.3 m
Air Draft
?
Foresail
Sail Area
385′² / 35.8 m²
I
50 7 / 15.4 m
J
15 2 / 4.6 m
Forestay Length
52 10 / 16.1 m

Auxilary Power

Make
Westerbeke
Model
?
HP
46
Fuel Type
Diesel
Fuel Capacity
40 gal / 151 l
Engine Hours
?

Accomodations

Water Capacity
107 gal / 405 l
Holding Tank Capacity
?
Headroom
?
Cabins
2

Calculations

Hull Speed
9.0 kn
Classic: 7.76 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

9.01 knots
Classic formula: 7.76 knots
Sail Area/Displacement
16.3
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.
16.28
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
36.7
<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

36.67
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
213.8
200-275: moderate

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
213.8
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
26.8
20-30: coastal cruiser

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
26.77
<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
1.9
<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
1.92
<2: better suited for ocean passages
>2: better suited for coastal cruising

Notes

Based on the SUN FIZZ 39 > O’DAY 39 by Briand, with modifications by Hunt Associates. Differences from the O’DAY 39: Extended ‘suger scoop’ stern, different interior layout.
Shoal draft version:
Draft: 4.90’ / 1.49m
Displacement: 18500 lbs./ 8392 kgs.
Later models (> hull #135) have taller rig.
I: 52.00’ / 15.85m
J: 15.25’ / 4.65m
P: 46.00’ / 14.02m
E: 13.25’ / 4.04m
See O’DAY 40 +135 for some slightly different specs on later boats.

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