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Sailboat Specifications

Splinter 21

Masthead Sloop · Fin Keel

Designed by E. G. Van De Stadt · Built by H. H. Marine (Uk)/Peulen Shipyard · First built 1963

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LOA 21.18 ft  ·  Beam 6.83 ft  ·  Displacement 2,780.00 lb  ·  Sail Area 163.00 ft²  ·  Masthead Sloop  ·  Fin Keel
About the Splinter 21 Sailboat

A compact and nimble daysailer, the Splinter 21 is designed for sailors who want an accessible and enjoyable experience on the water without the complexity of a larger vessel. Well-suited to sheltered coastal waters, lakes, and bays, this boat appeals to those looking to hone their skills or simply enjoy relaxed weekend sailing close to home. With limited specification data widely available, the Splinter 21 remains something of a modest, under-the-radar design — the kind of boat often appreciated by a loyal following of sailors who value simplicity and ease of handling over flashy performance numbers. Boats in this class typically reward attentive sailing and offer a hands-on connection to the water that larger cruisers cannot match. For a prospective buyer, the Splinter 21 represents an entry point into keelboat or small sailboat ownership that keeps maintenance demands and running costs manageable. Those researching this model would be wise to seek out owner communities and class associations, where firsthand accounts can provide the most reliable picture of what sailing a Splinter 21 is truly like day to day.

Dimensions & Specifications
LOA (Length Overall) 21.18 ft / 6.46 m
LWL (Waterline Length) 17.00 ft / 5.18 m
Beam 6.83 ft / 2.08 m
Max Draft 3.75 ft / 1.14 m
Displacement 2,780.00 lb / 1,261 kg
Ballast 900.00 lb / 408 kg
Sail Area (Reported) 163.00 ft² / 15.14 m²
Design & Construction
Hull Type Fin Keel
Rigging Type Masthead Sloop
Construction FG
Designer E. G. Van de Stadt
Builder H. H. Marine (UK)/Peulen Shipyard
First Built 1963
Related Sailboats Muscadet · Santana 21 · Trotter · South Coast 21 · Aquarius 21
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Frequently Asked Questions

What is the Splinter 21's sail area to displacement ratio?

The Splinter 21 has a Sail Area to Displacement ratio (SA/D) of 13.22. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Splinter 21's comfort ratio?

The Splinter 21 has a Ted Brewer Comfort Ratio of 18.2. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Splinter 21 safe for offshore sailing?

The Splinter 21 has a Capsize Screening Formula value of 1.95. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Splinter 21?

The theoretical hull speed of the Splinter 21 is 5.52 knots, calculated from its waterline length.

How much does a Splinter 21 weigh?

The Splinter 21 has a displacement of 2,780.00 lb and a length overall (LOA) of 21.18 ft.

Who designed the Splinter 21?

The Splinter 21 was designed by E. G. Van De Stadt, first built in 1963.