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Sailboat Specifications

Irwin 33

Masthead Sloop · Fin W/Spade Rudder

Designed by Ted Irwin · Built by Irwin Yachts · First built 1974

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LOA 33.00 ft  ·  Beam 11.17 ft  ·  Displacement 10,950.00 lb  ·  Sail Area 514.00 ft²  ·  Masthead Sloop  ·  Fin W/Spade Rudder
About the Irwin 33 Sailboat

Designed during the 1970s by Ted Irwin, this 33-foot cruiser represents the era's focus on comfortable family sailing with moderate performance capabilities. The Irwin 33 emerged from a builder known for creating affordable fiberglass sailboats that prioritized interior volume and ease of handling over racing pedigree. Built with a traditional full keel configuration, this vessel offers predictable sailing characteristics that appeal to cruising sailors seeking stability and comfort over speed. The design emphasizes practical features for coastal cruising and weekend sailing, with accommodations that typically maximize living space within the hull's dimensions. Irwin Yachts developed a reputation for producing boats with generous beam measurements relative to their length, resulting in spacious interiors that feel larger than their actual size suggests. While not considered a performance-oriented design, the Irwin 33 delivers steady progress under sail with forgiving handling characteristics that suit intermediate sailors. The boat's construction reflects 1970s production boat standards, featuring solid fiberglass laminate and straightforward systems. For sailors prioritizing comfort, affordability, and ease of maintenance over cutting-edge performance, the Irwin 33 continues to attract attention in the used boat market as a capable coastal cruiser.

Dimensions & Specifications
LOA (Length Overall) 33.00 ft / 10.06 m
LWL (Waterline Length) 27.50 ft / 8.38 m
Beam 11.17 ft / 3.40 m
Max Draft 5.50 ft / 1.68 m
Displacement 10,950.00 lb / 4,967 kg
Ballast 4,200.00 lb / 1,905 kg
Sail Area (Reported) 514.00 ft² / 47.75 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Masthead Sloop
Construction FG
Designer Ted Irwin
Builder Irwin Yachts
First Built 1974
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Engine & Accommodations
Horsepower 30
Fuel Capacity 20
Water Capacity 45
Frequently Asked Questions

What is the Irwin 33's sail area to displacement ratio?

The Irwin 33 has a Sail Area to Displacement ratio (SA/D) of 16.74. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Irwin 33's comfort ratio?

The Irwin 33 has a Ted Brewer Comfort Ratio of 23.33. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Irwin 33 safe for offshore sailing?

The Irwin 33 has a Capsize Screening Formula value of 2.02. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Irwin 33?

The theoretical hull speed of the Irwin 33 is 7.03 knots, calculated from its waterline length.

How much does a Irwin 33 weigh?

The Irwin 33 has a displacement of 10,950.00 lb and a length overall (LOA) of 33.00 ft.

Who designed the Irwin 33?

The Irwin 33 was designed by Ted Irwin, first built in 1974.