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Sailboat Specifications

Friendship 21

Fractional (7/8) Sloop · Fin W/Transom Hung Rudder

Designed by Koos De Ridder · Built by Dever Bootswerft / Friendship Yachts (Nl) · First built 1982

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LOA 22.08 ft  ·  Beam 8.20 ft  ·  Displacement 2,182.58 lb  ·  Sail Area 227.12 ft²  ·  Fractional (7/8) Sloop  ·  Fin W/Transom Hung Rudder
About the Friendship 21 Sailboat

Designed by renowned Dutch naval architect Koos De Ridder, this compact cruiser emerged from the Netherlands during the 1980s as a thoughtfully engineered pocket yacht. Built by Dever Bootswerft and later Friendship Yachts from 1982 to 1991, only 67 hulls were produced, making the Friendship 21 a relatively rare find on today's market. The boat's conservative comfort ratio of 10.43 and moderate capsize screening value of 2.53 reflect De Ridder's emphasis on seaworthiness over pure performance. Her fiberglass construction features a fin keel with transom-hung rudder configuration, providing responsive handling while maintaining the structural simplicity that Dutch builders are known for. The fractional sloop rig offers versatility and easier sail handling for a small crew. With a displacement of 2,182.58 pounds and sail area of 227.12 square feet, this design strikes a balance between stability and sailing performance. The SA/Displacement ratio of 21.65 suggests moderate power, making her well-suited for coastal cruising and weekend adventures rather than aggressive racing. Her hull speed of 5.77 knots provides respectable passage-making capability for extended coastal voyages, while the boat's modest beam and draft make her suitable for exploring shallow harbors and anchorages throughout European and North American waters.

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Dimensions & Specifications
LOA (Length Overall) 22.08 ft / 6.73 m
LWL (Waterline Length) 18.54 ft / 5.65 m
Beam 8.20 ft / 2.50 m
Max Draft 3.61 ft / 1.10 m
Displacement 2,182.58 lb / 990 kg
Sail Area (Reported) 227.12 ft² / 21.10 m²
Headroom 4.69 ft / 1.43 m
Design & Construction
Hull Type Fin w/transom hung rudder
Rigging Type Fractional (7/8) Sloop
Construction FG
Designer Koos de Ridder
Builder Dever Bootswerft / Friendship yachts (NL)
First Built 1982
Last Built 1991
Number Built 67
Associations International Friendship Club
Related Sailboats S2 69 · Seaward 22 · Cal 22 · Starwind 22 · Merit 22
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Frequently Asked Questions

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

The Friendship 21 has a Sail Area to Displacement ratio (SA/D) of 21.65. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Friendship 21's comfort ratio?

The Friendship 21 has a Ted Brewer Comfort Ratio of 10.43. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Friendship 21 safe for offshore sailing?

The Friendship 21 has a Capsize Screening Formula value of 2.53. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Friendship 21?

The theoretical hull speed of the Friendship 21 is 5.77 kn knots, calculated from its waterline length.

How much does a Friendship 21 weigh?

The Friendship 21 has a displacement of 2,182.58 lb and a length overall (LOA) of 22.08 ft.

Who designed the Friendship 21?

The Friendship 21 was designed by Koos De Ridder, first built in 1982.