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Sailboat Specifications

Irwin 45

Masthead Sloop · Fin Keel

Designed by Ted Irwin · Built by Irwin Yachts · First built 1970

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LOA 45.00 ft  ·  Beam 11.50 ft  ·  Displacement 23,000.00 lb  ·  Sail Area 882.00 ft²  ·  Masthead Sloop  ·  Fin Keel
About the Irwin 45 Sailboat

Launched during Irwin Yachts' productive years in the 1980s, this substantial cruising sailboat represents the Florida builder's commitment to creating comfortable, seaworthy vessels for serious coastal and offshore sailing. Ted Irwin's design philosophy emphasized practical cruising features over racing performance, making this model particularly appealing to sailors seeking a capable long-distance cruiser. The 45-footer showcases the builder's characteristic approach to bluewater sailing, with a moderate displacement hull form that balances comfort with reasonable performance under sail. Irwin Yachts built a solid reputation for constructing boats that could handle extended passages while providing the interior volume and amenities that make life aboard enjoyable for extended periods. Built with solid fiberglass construction and designed for the charter trade as well as private ownership, these boats typically feature spacious interiors with multiple cabin configurations. The design prioritizes ease of handling and reliability over cutting-edge performance, making it well-suited for couples or families planning coastal cruising or offshore passages. While not the fastest boats in their size range, they offer the kind of dependable sailing characteristics that have made many Irwin models enduring favorites among practical cruising sailors.

Dimensions & Specifications
LOA (Length Overall) 45.00 ft / 13.72 m
LWL (Waterline Length) 32.00 ft / 9.75 m
Beam 11.50 ft / 3.51 m
Max Draft 6.50 ft / 1.98 m
Displacement 23,000.00 lb / 10,433 kg
Ballast 10,000.00 lb / 4,536 kg
Sail Area (Reported) 882.00 ft² / 81.94 m²
Design & Construction
Hull Type Fin Keel
Rigging Type Masthead Sloop
Construction FG
Designer Ted Irwin
Builder Irwin Yachts
First Built 1970
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Engine & Accommodations
Horsepower 40
Frequently Asked Questions

What is the Irwin 45's sail area to displacement ratio?

The Irwin 45 has a Sail Area to Displacement ratio (SA/D) of 17.52. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Irwin 45's comfort ratio?

The Irwin 45 has a Ted Brewer Comfort Ratio of 38.28. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Irwin 45 safe for offshore sailing?

The Irwin 45 has a Capsize Screening Formula value of 1.62. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Irwin 45?

The theoretical hull speed of the Irwin 45 is 7.58 knots, calculated from its waterline length.

How much does a Irwin 45 weigh?

The Irwin 45 has a displacement of 23,000.00 lb and a length overall (LOA) of 45.00 ft.

Who designed the Irwin 45?

The Irwin 45 was designed by Ted Irwin, first built in 1970.