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Seller's Description

Posted on May 23rd 2021

Large, deep cockpit for 8 adults, her roomy living spaces are sized properly and well ventilated. U-shape galley with large working space and shelf. Cockpit table, stern swimming ladder, cockpit shower and lazarette. Her shallow draft makes her great for cruising the Chesapeake bay Florida and the Bahamas. Comfortable cruiser, roomy, clean.

Equipment: Fuel: 31 gal, water: 86 gal 6 gal hot water heater New Jabsco head Holding tank: 14 gal Under the cockpit Auto-Pilot with Edson Gears. Depth finder w/alarm, VHF. 5 Ritchie Compass, barometer. Recent main sail custom-made 6.5 oz Dacron w/2 quickly set reef points, Cunningham. Hydraulic Backstay adjuster. Roller furling 120% Genoa with sacrificial sunbrella canvas, in fair condition. Dacron storm jib (never used). Spinnaker with sock. 4 x Barient 2 speed winches 3 x 1 speed winches with Sunbrella covers. Recent Standing SS rigging 1x19 cables w/norseman fittings. 35lbs CQR anchor, with 1/2chain and 3/4 line. 33lbs Claw with 35 5/16 chain and 3/4 line Interlux InterProtect 2000e (6 coats). Petit Trinidad SR (2 coats) Stack-Pack and bimini top Dynema lifelines 2.5 years old. Refinished teak interior with old varnish removed and 3 coats of varnish. Also new varnish on teak & holly floor boards. Nice foam cushions with Sunbrela upholstery and lee cloths 10 opening ports with screens, companionway and hatch screens. Headliner with closed cell foam insulation above it. 3 burner propane stove oven, 3.5 cubic feet ice box.

A lot of storage compartments and shelves with netting. Teak foldable cockpit table and 6 cup holders, stern swimming ladder, cockpit shower and lazarette.

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Specs

Designer
Ted Irwin
Builder
Irwin Yachts
Association
Irwin Yacht Owners
# Built
300
Hull
Monohull
Keel
Fin
Rudder
Spade
Construction
FG

Dimensions

Length Overall
34 4 / 10.5 m
Waterline Length
27 3 / 8.3 m
Beam
11 3 / 3.4 m
Draft
4 0 / 1.2 m
Displacement
11,500 lb / 5,216 kg
Ballast
4,100 lb / 1,860 kg

Rig and Sails

Type
Sloop
Reported Sail Area
538′² / 50 m²
Total Sail Area
539′² / 50 m²
Mainsail
Sail Area
250′² / 23.2 m²
P
37 0 / 11.3 m
E
13 5 / 4.1 m
Air Draft
46 1 / 14.1 m
Foresail
Sail Area
289′² / 26.8 m²
I
41 11 / 12.8 m
J
13 8 / 4.2 m
Forestay Length
44 2 / 13.5 m

Auxilary Power

Make
Yanmar
Model
3GMF
HP
?
Fuel Type
Diesel
Fuel Capacity
30 gal / 114 l
Engine Hours
?

Accomodations

Water Capacity
80 gal / 303 l
Holding Tank Capacity
?
Headroom
?
Cabins
1

Calculations

Hull Speed
7.7 kn
Classic: 7.01 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

7.74 knots
Classic formula: 7.01 knots
Sail Area/Displacement
16.9
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.
16.9
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
35.7
<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

35.66
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
251.5
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
251.5
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
23.9
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
23.88
<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 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
1.99
<2: better suited for ocean passages
>2: better suited for coastal cruising

Notes

Shoal draft: 4.0’
Draft keel/cb - BU:4.0’/BD: 8.1’

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

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