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Sailboat Specifications

Sun 27

Masthead Sloop · Fin W/Spade Rudder

Designed by Monk/Perry · Built by Sun Yachts · First built 1977

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LOA 27.50 ft  ·  Beam 9.00 ft  ·  Displacement 6,200.00 lb  ·  Sail Area 340.00 ft²  ·  Masthead Sloop  ·  Fin W/Spade Rudder
About the Sun 27 Sailboat

Built during a brief but productive four-year run from 1977 to 1980, this compact cruiser represents a collaboration between renowned designers Edwin Monk and Robert Perry for Sun Yachts. With only 155 hulls produced, the Sun 27 has earned recognition as a well-balanced coastal cruiser that punches above its weight class. The design showcases classic late-1970s thinking with its fin keel and spade rudder configuration, delivering responsive handling and respectable sailing performance. The boat's moderate displacement of 6,200 pounds, combined with 2,300 pounds of ballast, creates a stable platform that inspires confidence in a variety of conditions. Her 340 square feet of sail area provides adequate power for coastal cruising and weekend adventures. The Sun 27's comfortable motion at sea stems from her sensible proportions and the designers' attention to seaworthiness. The hull's 22.50-foot waterline generates a theoretical hull speed of 6.36 knots, making her capable of respectable passage times under sail. Her masthead sloop rig keeps sail handling straightforward, while the fiberglass construction ensures durability and low maintenance. This boat suits sailors seeking a capable coastal cruiser for weekend getaways, small crew adventures, or as an entry point into serious sailing without overwhelming complexity.

Dimensions & Specifications
LOA (Length Overall) 27.50 ft / 8.38 m
LWL (Waterline Length) 22.50 ft / 6.86 m
Beam 9.00 ft / 2.74 m
Max Draft 4.33 ft / 1.32 m
Displacement 6,200.00 lb / 2,812 kg
Ballast 2,300.00 lb / 1,043 kg
Sail Area (Reported) 340.00 ft² / 31.59 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Masthead Sloop
Construction FG
Designer Monk/Perry
Builder Sun Yachts
First Built 1977
Last Built 1980
Number Built 155
Related Sailboats Cal 27 · Morgan 27 · Tanzer 28 · Cc 27 Mk Ii · Lm 27
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Engine & Accommodations
Fuel Capacity 15 gals / 57 L
Water Capacity 16 gals / 61 L
Frequently Asked Questions

What is the Sun 27's sail area to displacement ratio?

The Sun 27 has a Sail Area to Displacement ratio (SA/D) of 16.17. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Sun 27's comfort ratio?

The Sun 27 has a Ted Brewer Comfort Ratio of 21.39. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Sun 27 safe for offshore sailing?

The Sun 27 has a Capsize Screening Formula value of 1.96. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Sun 27?

The theoretical hull speed of the Sun 27 is 6.36 kn knots, calculated from its waterline length.

How much does a Sun 27 weigh?

The Sun 27 has a displacement of 6,200.00 lb and a length overall (LOA) of 27.50 ft.

Who designed the Sun 27?

The Sun 27 was designed by Monk/Perry, first built in 1977.