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Sailboat Specifications

International 600

Masthead Yawl · Long Keel

Designed by Robert G. Henry Jr. · Built by Dedood And Sohn Yacht Und Boatwerks · First built 1965

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LOA 36.00 ft  ·  Beam 10.00 ft  ·  Displacement 15,000.00 lb  ·  Sail Area 641.00 ft²  ·  Masthead Yawl  ·  Long Keel
About the International 600 Sailboat

With limited specifications available, the International 600 represents an intriguing piece of sailing history that deserves further investigation by prospective buyers and sailing enthusiasts. This sailboat appears to be part of a design lineage that emphasized standardized racing specifications, as suggested by its "International" designation and numerical classification system. Based on typical boats of this naming convention, the International 600 was likely designed with competitive sailing in mind, though it may have evolved to serve dual racing and recreational cruising roles. The standardized design approach common to International class boats usually resulted in well-balanced sailing characteristics that appealed to both racing crews seeking consistent performance and cruising sailors wanting predictable handling. The scarcity of readily available specifications suggests this model may have had a more limited production run or represents a specialized class that operated within specific sailing communities. For researchers considering this vessel, the International 600 likely offers the solid construction and thoughtful design elements typical of purpose-built sailing boats from its era. Potential buyers should investigate individual examples carefully, as the boat's performance characteristics and condition will heavily influence its suitability for intended use, whether coastal cruising, club racing, or recreational sailing.

Dimensions & Specifications
LOA (Length Overall) 36.00 ft / 10.97 m
LWL (Waterline Length) 26.00 ft / 7.92 m
Beam 10.00 ft / 3.05 m
Max Draft 5.00 ft / 1.52 m
Displacement 15,000.00 lb / 6,804 kg
Sail Area (Reported) 641.00 ft² / 59.55 m²
Design & Construction
Hull Type Long Keel
Rigging Type Masthead Yawl
Construction Wood
Designer Robert G. Henry Jr.
Builder DeDood and Sohn Yacht und Boatwerks
First Built 1965
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Engine & Accommodations
Horsepower 30
Fuel Capacity 28
Water Capacity 64
Frequently Asked Questions

What is the International 600's sail area to displacement ratio?

The International 600 has a Sail Area to Displacement ratio (SA/D) of 16.92. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the International 600's comfort ratio?

The International 600 has a Ted Brewer Comfort Ratio of 37.22. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the International 600 safe for offshore sailing?

The International 600 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 International 600?

The theoretical hull speed of the International 600 is 6.83 knots, calculated from its waterline length.

How much does a International 600 weigh?

The International 600 has a displacement of 15,000.00 lb and a length overall (LOA) of 36.00 ft.

Who designed the International 600?

The International 600 was designed by Robert G. Henry Jr., first built in 1965.