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Sailboat Specifications

Thomas 35

Fractional Sloop · Fin W/Spade Rudder

Designed by Graham & Schlageter · Built by Thomas Marine Inc./Tartan Marine (Usa) · First built 1988

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LOA 35.42 ft  ·  Beam 11.50 ft  ·  Displacement 9,800.00 lb  ·  Sail Area 702.00 ft²  ·  Fractional Sloop  ·  Fin W/Spade Rudder
About the Thomas 35 Sailboat

Designed by the respected team of Graham & Schlageter, this mid-1980s cruiser represents a thoughtful balance between performance and comfort for coastal and offshore sailing. Built by Thomas Marine Inc. and later Tartan Marine, the boat features a modern fin keel with spade rudder configuration that delivers responsive handling while maintaining the stability needed for extended cruising. The fractional sloop rig provides excellent sail handling characteristics, making it well-suited for both shorthanded cruising and spirited coastal sailing. With a displacement of 9,800 pounds and 4,450 pounds of ballast, this fiberglass construction offers reassuring stability without sacrificing sailing performance. The sail area to displacement ratio of 24.61 indicates a boat that will move well in moderate conditions while remaining manageable in stronger winds. The comfort ratio of 18.31 suggests this design prioritizes sailing performance over ultimate interior volume, typical of boats from this era that emphasized seaworthiness and sailing ability. The capsize screening value of 2.15 falls within acceptable parameters for offshore sailing, while the hull speed of 7.40 knots provides realistic expectations for passage planning. This makes it an excellent choice for sailors seeking a capable coastal cruiser with occasional offshore potential.

Dimensions & Specifications
LOA (Length Overall) 35.42 ft / 10.80 m
LWL (Waterline Length) 30.50 ft / 9.30 m
Beam 11.50 ft / 3.51 m
Max Draft 6.83 ft / 2.08 m
Displacement 9,800.00 lb / 4,445 kg
Ballast 4,450.00 lb / 2,018 kg
Ballast Type Lead
Sail Area (Reported) 702.00 ft² / 65.22 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Fractional Sloop
Construction FG
Designer Graham & Schlageter
Builder Thomas Marine Inc./Tartan Marine (USA)
First Built 1988
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Engine & Accommodations
Engine Make Yanmar
Engine Model 3GM
Engine Type Diesel
Horsepower 27
Fuel Capacity 20 gals / 76 L
Water Capacity 35 gals / 132 L
Frequently Asked Questions

What is the Thomas 35's sail area to displacement ratio?

The Thomas 35 has a Sail Area to Displacement ratio (SA/D) of 24.61. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Thomas 35's comfort ratio?

The Thomas 35 has a Ted Brewer Comfort Ratio of 18.31. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Thomas 35 safe for offshore sailing?

The Thomas 35 has a Capsize Screening Formula value of 2.15. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Thomas 35?

The theoretical hull speed of the Thomas 35 is 7.40 kn knots, calculated from its waterline length.

How much does a Thomas 35 weigh?

The Thomas 35 has a displacement of 9,800.00 lb and a length overall (LOA) of 35.42 ft.

Who designed the Thomas 35?

The Thomas 35 was designed by Graham & Schlageter, first built in 1988.