IRWIN 1/2 TON MKII

Masthead Sloop • Lifting Keel • Built 1977

Dimensions

LOA: 32 ft
LWL: 24.42 ft
Beam: 11.33 ft
Max Draft: 6.5 ft
Min Draft: 3.5 ft
Displacement: 7,300 lbs
Ballast: 3,500 lbs

Performance Ratios

Capsize Ratio ⓘ: 2.34 (use caution offshore)
SA/D Ratio ⓘ: 17.5
D/L Ratio ⓘ: 224
Ballast Ratio ⓘ: 47.9%

Sail Plan

Sail Area: 412 sq ft

Construction

Hull Type: Lifting Keel
Rig Type: Masthead Sloop
Hull Material: FG
Ballast Type: Lead

Production

First Built: 1977
Last Built: —
Number Built: —

Engine & Accommodations

Engine Make: Yanmar
Power: 12 hp
Engine Type: Diesel
Water: 28 gal
Fuel: 14 gal

Notes:

According to Irwin documentation, as compared to the first version, the MKII has a transom hung rudder, drop/dagger keel, (draft is the same) softer chine and broader beam aft.

Designer

Ted Irwin (1940–2015)

Builder

Irwin Yachts (1966–1992)

Class Associations

Related Boats

Name	LOA (ft)	Year	Rig
IRWIN 1/2 TON	32	1976	Masthead Sloop