Seller's Description
General condition and any additional information
ALL BOAT SHOWINGS ARE BY APPOINTMENT ONLY. PLEASE CONTACT US TO SET UP A VIEWING.
Disclaimer The Company offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to prior sale, price change, or withdrawal without notice.
Standard features
LOA: 37 ft LWL: 30 ft Beam: 11 ft 6 in Draft: 4 ft Cabin Headroom: 6 ft 1 in Dry Weight: 20000 lb Ballast: 6700 lb Displacement: 22000 lb
Fuel Tanks #: 1 Fuel Tanks Capacity: 85 gal Fuel Tanks Material: Aluminum
Fresh Water Tanks #: 2 Fresh Water Tanks Capacity: 200 gal Fresh Water Tanks Material: Aluminum
Holding Tanks #: 2 Holding Tank Capacity: 25 gal
Number of twin berths: 2 Number of Cabins: 2 Number of Heads: 2
Engine Make: Perkins Engine Model: 4-108 Primary Engines: Inboard Drive Type: Direct Drive Engine Year: 1977 Hours: unknown Power: 50 hp
Electronics • Depthsounder - Hummingbird • Radar • Log-Speedometer - SR Mariner • Wind Speed and Direction - SR Mariner • TV Set • DVD Player • Autopilot - Autohelm 3000 • Compass - 3 • VHF - Standard Horizon • Fully Battened Mainsail • Furling Genoa • Steering Wheel • Electric Bilge Pump • Oven - w/ 3 burner gas stove • Manual Bilge Pump • Microwave Oven - brand new 2019 • Hot Water • Refrigerator • Shore Power Inlet • Swimming Ladder • Bimini Top • Spray Hood • Mainsail Cover • Cockpit Cover
Additional: -5 opening deck hatches -13 opening screened windows -aft curtain enclosure -boarding ladder -ice chest -wooden cutting board -one oval sink -reefing mainsail -whisker pole -custom winter cover -cradle
Specs
- Designer
- Ted Irwin
- Builder
- Irwin Yachts
- Association
- Irwin Yacht Owners
- # Built
- ?
- Hull
- Monohull
- Keel
- Fin
- Rudder
- Skeg
- Construction
- FG
Dimensions
- Length Overall
- 37′ 0″ / 11.3 m
- Waterline Length
- 29′ 11″ / 9.1 m
- Beam
- 11′ 6″ / 3.5 m
- Draft
- 5′ 6″ / 1.7 m
- Displacement
- 18,000 lb / 8,165 kg
- Ballast
- 6,700 lb / 3,039 kg
Rig and Sails
- Type
- Sloop
- Reported Sail Area
- 558′² / 51.8 m²
- Total Sail Area
- 558′² / 51.9 m²
Mainsail
- Sail Area
- 257′² / 23.9 m²
- P
- 35′ 5″ / 10.8 m
- E
- 14′ 6″ / 4.4 m
- Air Draft
- ?
Foresail
- Sail Area
- 301′² / 28 m²
- I
- 41′ 11″ / 12.8 m
- J
- 14′ 4″ / 4.4 m
- Forestay Length
- 44′ 4″ / 13.5 m
Auxilary Power
- Make
- Perkins
- Model
- 4-107
- HP
- 40
- Fuel Type
- Diesel
- Fuel Capacity
- 80 gal / 303 l
- Engine Hours
- ?
Accomodations
- Water Capacity
- 50 gal / 189 l
- Holding Tank Capacity
- ?
- Headroom
- ?
- Cabins
- ?
Calculations
- Hull Speed
-
7.7 kn
Classic: 7.34 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
- Sail Area/Displacement
-
13.0
<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.
- Ballast/Displacement
-
37.2
<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
- Displacement/Length
-
298.0
200-300: 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
- Comfort Ratio
-
33.2
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
- Capsize Screening
-
1.8
<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
Notes
The IRWIN 37 was promoted as a no compromise cruising boat.
Introduced in 1971 it was one of this builders most successful models though undergoing numerous changes until production ended in 1982. It’s been said that nearly nearly 600 were sold.
Available as sloop, cutter or ketch.
KEEL OPTIONS:
Shoal draft fixed keel: 4.92’
Keel/cb version: (draft: 4.0’ board up)
Also available with a 50 HP Perkins 4-108
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IRWIN 37-2 (1976 - bowsprit added which continued for all remaining models.)
IRWIN 37-3
IRWIN 37-4 (1977)
IRWIN 37-5 (1982 last model year).
This listing is presented by SailboatOwners.com. Visit their website for more information or to contact the seller.
