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Seller's Description

We are moving to a larger and newer Sailboat so we are selling SailMates. A great older sailboat we have owned for 10 years. Has a 20 HP inboard Atomic 4 gasoline engine which was rebuilt 10 years ago with limited hours We have only used 15 gallons of gas per season. Sails are older but usable. The main sail was reconditioned and re-resined by Sailcare.com See website for more info. Exterior is beautiful Flag Blue with Red and Gold accents on White topsides. Was featured in an edition of Good Old Boat 9 years ago!!! Interior has double V Berth forward, Port Dinette convertible top double berth. Port Aft Quarter berth with light. Head has newer Raritan manual head and pressure water. Galley has single sink with pressure water. New 110v True 2 burner induction stovetop. Large Ice Box with shelf. And more storage than many newer Sailboats we have looked at!!! Does need some TLC to be in best condition. While not a fixer upper if you have NO repair skills this may not be the boat for you. Exterior Teak needs refinishing Has interior water leak that I havent had time to find and correct. Water gets on main cabin shelf Mast and Anchor lights do not work Manual Bilge does not work Included Autopilot does not work Engine gauges do not work

Equipment: Includes: Hull/Rigging Bottom Painted in 2021. Reconditioned Main 2017 3 battens 2 reefs 110 Furling Genoa Lightly Used Cruising Spinnaker. 7 winches (2 on mast) Mast Stepped At Keel & Keel of Cast Lead. Manual Bilge Pump. NEW 2022 Automatic Bilge Pump Anchor Well In Foredeck. Ventilating Hatch with solar vent 4 Opening Ports. Teak Tiller Inboard Genoa Tracks 2 Large Cockpit lockers Sunbrella cockpit cushions Sunbrella Sail cover Custom Storage Cradle Electrical 12V D.C. & 110V A.C. Protected Systems. Shore Power w/Cord. Interior Outlets. Master Panel w/Circuit Breakers. Interior Cabin Lighting. Navigation Lights. 2 High Capacity 12V Batteries Knot & Depth Meter 3 compasses 2019 New Stereo AM/FM radio with Bluetooth Marine Radio 2012 110v Refrigerator Freezer sold separately NEW 2022 600 GPM Bilge Pump Accommodations Teak Interior. Sleeps 5. 6’3” Headroom in Main Salon. Oak Sole in Main Salon & Forward Cabin. Removable Dinette Table. Drawers Throughout for Storage. Private Head Compartment w/Marine Toilet & Holding Tank, Vanity, Sink & Counter. Cold Pressure Water Galley w/Stainless Steel Sink & Pressure Water. 2 Burner Induction NEW NEW 2020 110v Stovetop Ice Box w/Shelf. Custom step for easy entry to forward bunk



Ted Irwin
Irwin Yachts
# Built
Stub + Centerboard


Length Overall
31 11 / 9.8 m
Waterline Length
25 0 / 7.6 m
8 11 / 2.7 m
3 6 / 1.1 m 4 11 / 1.5 m
11,500 lb / 5,216 kg
5,000 lb / 2,268 kg (Lead)

Rig and Sails

Reported Sail Area
498′² / 46.3 m²
Total Sail Area
498′² / 46.3 m²
Sail Area
242′² / 22.4 m²
34 6 / 10.5 m
14 0 / 4.3 m
Air Draft
Sail Area
257′² / 23.9 m²
39 6 / 12 m
12 11 / 4 m
Forestay Length
41 6 / 12.7 m

Auxilary Power

Atomic 4
Fuel Type
Fuel Capacity
Engine Hours


Water Capacity
Holding Tank Capacity


Hull Speed
6.8 kn
Classic: 6.7 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

6.81 knots
Classic formula: 6.7 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: 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.


Ballast / Displacement * 100

<40: less stiff, less powerful
>40: stiffer, more powerful
275-350: heavy

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


A fixed keel version was also available as was a Volvo diesel as an option. Later, the tooling was used to build the ENDEAVOUR 32.

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

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