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Sailboat Specifications

Islander 47 Alden

Cutter · Keel/Cbrd.

Designed by John G. Alden Inc. · Built by Wellington Boats Inc. · First built 1978

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LOA 46.92 ft  ·  Beam 13.50 ft  ·  Displacement 45,000.00 lb  ·  Cutter  ·  Keel/Cbrd.
About the Islander 47 Alden Sailboat

Designed by the renowned Alden naval architecture firm, this 47-foot sailboat represents a classic approach to blue-water cruising from an era when seaworthiness and traditional lines took precedence over interior volume. The Islander 47 Alden carries the distinctive hallmarks of Alden's design philosophy, emphasizing ocean-going capability and timeless aesthetics. Built for serious offshore cruising, this vessel features the kind of substantial construction and thoughtful design details that made Alden boats legendary among long-distance sailors. The hull form balances performance with stability, creating a boat that can handle extended passages while maintaining reasonable sailing speeds in various conditions. The Alden pedigree brings with it a reputation for conservative engineering and proven seakeeping abilities. These boats were designed when crossing oceans meant relying entirely on the vessel's inherent strength and seaworthiness. The result is a cruising sailboat that inspires confidence in challenging conditions. For sailors seeking a traditional cruising yacht capable of extended offshore passages, the Islander 47 Alden offers the proven design heritage of one of America's most respected naval architecture firms combined with the robust construction standards of the Islander shipyard.

Dimensions & Specifications
LOA (Length Overall) 46.92 ft / 14.30 m
LWL (Waterline Length) 38.67 ft / 11.79 m
Beam 13.50 ft / 4.11 m
Max Draft 7.00 ft / 2.13 m
Min Draft 4.83 ft / 1.47 m
Displacement 45,000.00 lb / 20,412 kg
Ballast 11,000.00 lb / 4,990 kg
Design & Construction
Hull Type Keel/Cbrd.
Rigging Type Cutter
Construction FG
Designer John G. Alden Inc.
Builder Wellington Boats Inc.
First Built 1978
Related Sailboats Dolphin 47 Alden · Valiant 47 · Bristol 477 · Ct 47 · Tayana 47 Cc
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Frequently Asked Questions

What is the Islander 47 Alden's comfort ratio?

The Islander 47 Alden has a Ted Brewer Comfort Ratio of 52.8. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Islander 47 Alden safe for offshore sailing?

The Islander 47 Alden has a Capsize Screening Formula value of 1.52. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Islander 47 Alden?

The theoretical hull speed of the Islander 47 Alden is 8.33 knots, calculated from its waterline length.

How much does a Islander 47 Alden weigh?

The Islander 47 Alden has a displacement of 45,000.00 lb and a length overall (LOA) of 46.92 ft.

Who designed the Islander 47 Alden?

The Islander 47 Alden was designed by John G. Alden Inc., first built in 1978.