Built between 1969 and 1976 by Irwin Yacht & Marine Corporation, this 25-footer represents Ted Irwin's approach to affordable family cruising during the height of the fiberglass boat boom. The masthead sloop configuration and moderate displacement of 5,400 pounds strike a practical balance between performance and stability for coastal cruising adventures. Notable design features include a keel/centerboard configuration with spade rudder, offering the versatility of shallow-water exploration while maintaining good windward performance when the board is down. The 6.67-foot maximum draft provides excellent stability, while the centerboard allows access to shoal waters and easier trailering. With 315 square feet of sail area and a theoretical hull speed of 6.07 knots, the boat delivers respectable performance for weekend coastal sailing. The comfort ratio of 23.79 indicates a relatively stiff, quick-motion boat that favors performance over ultimate comfort, while the capsize screening value of 1.83 suggests good stability characteristics for coastal waters. This design appeals to sailors seeking an affordable entry into cruising with decent accommodations for a small crew. The Irwin 25 suits coastal cruising, day sailing, and light overnight adventures, though it's best kept in protected waters rather than extended offshore passages.
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What is the Irwin 25's sail area to displacement ratio?
The Irwin 25 has a Sail Area to Displacement ratio (SA/D) of 16.42. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.
What is the Irwin 25's comfort ratio?
The Irwin 25 has a Ted Brewer Comfort Ratio of 23.79. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.
Is the Irwin 25 safe for offshore sailing?
The Irwin 25 has a Capsize Screening Formula value of 1.83. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.
What is the hull speed of the Irwin 25?
The theoretical hull speed of the Irwin 25 is 6.07 kn knots, calculated from its waterline length.
How much does a Irwin 25 weigh?
The Irwin 25 has a displacement of 5,400.00 lb and a length overall (LOA) of 25.42 ft.
Who designed the Irwin 25?
The Irwin 25 was designed by Ted Irwin, first built in 1969.