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Sailboat Specifications

Gs 27

Masthead Sloop · Fin W/Transom Hung Rudder

Designed by Graham & Schlageter · First built 1986

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LOA 27.00 ft  ·  Beam 9.00 ft  ·  Displacement 5,100.00 lb  ·  Sail Area 361.00 ft²  ·  Masthead Sloop  ·  Fin W/Transom Hung Rudder
About the Gs 27 Sailboat

Designed by the collaborative team of Graham & Schlageter, this 27-footer represents a thoughtful approach to small boat cruising that emerged during the mid-1980s sailing boom. With its moderate proportions and fiberglass construction, the Gs 27 strikes a balance between performance and comfort that appeals to sailors seeking a capable coastal cruiser. The boat's design philosophy centers on seaworthiness and manageable sailing characteristics. A healthy ballast-to-displacement ratio of nearly 39% provides excellent stability, while the fin keel configuration with transom-hung rudder delivers responsive handling and good upwind performance. The masthead sloop rig keeps sail handling straightforward, making this an ideal choice for couples or small crews. At 22.50 feet on the waterline, the Gs 27 achieves a respectable hull speed while maintaining the draft and beam proportions that allow access to most harbors and anchorages. The comfort ratio of 17.7 suggests this design prioritizes motion comfort over pure speed, making longer passages more pleasant. Well-suited for coastal cruising and weekend adventures, this design offers the security of substantial construction with sailing characteristics that build confidence. The capsize screening value indicates good stability margins for its intended use in protected and near-coastal waters.

Dimensions & Specifications
LOA (Length Overall) 27.00 ft / 8.23 m
LWL (Waterline Length) 22.50 ft / 6.86 m
Beam 9.00 ft / 2.74 m
Max Draft 5.00 ft / 1.52 m
Displacement 5,100.00 lb / 2,313 kg
Ballast 1,975.00 lb / 896 kg
Sail Area (Reported) 361.00 ft² / 33.54 m²
Design & Construction
Hull Type Fin w/transom hung rudder
Rigging Type Masthead Sloop
Construction FG
Designer Graham & Schlageter
First Built 1986
Related Sailboats J/27 · Precision 27 · Santa Cruz 27 · Cs 27 · Tartan 27 2
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Frequently Asked Questions

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

The Gs 27 has a Sail Area to Displacement ratio (SA/D) of 19.55. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Gs 27's comfort ratio?

The Gs 27 has a Ted Brewer Comfort Ratio of 17.7. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Gs 27 safe for offshore sailing?

The Gs 27 has a Capsize Screening Formula value of 2.09. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Gs 27?

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

How much does a Gs 27 weigh?

The Gs 27 has a displacement of 5,100.00 lb and a length overall (LOA) of 27.00 ft.

Who designed the Gs 27?

The Gs 27 was designed by Graham & Schlageter, first built in 1986.