The Finnsailor 35 Sailboat
Specs & Key Performance Indicators

The Finnsailor 35, a moderate displacenet motorsailor, was designed by Turien Veneveistramo and built in Finland by Fiskars AB.

A Finnsailor 35 sailboatA Finnsailor 35 motorsailor

Published Specification for the Finnsailor 35

Underwater Profile: Long keel

Hull Material: GRP (Fibreglass)

Length Overall: 35'0" (10.7m)

Waterline Length: 29'6" (9.0m)

Beam: 10'3" (3.1m)

Draft: 3'8" (1.1m)

Rig Type: Masthead sloop

Displacement: 14,000lb (6,350kg)

Ballast: 4,000lb (1,814kg)

Designer: Turien Veneveistramo

Builder: Fiskars AB (Finland)

Year First Built: 1969


Published Design Ratios for the Finnsailor 35

1. Sail Area/Displacement Ratio: 10.0

  • Less than 16 would be considered under-powered;
  • 16 to 20 would indicate reasonably good performance;
  • Over 20 suggests relatively high performance.

2. Ballast/Displacement Ratio: 28.6

  • Under 40: less stiff, less powerful
  • Over 40: stiffer, more powerful

3. Displacement/Length Ratio: 243

  • Under 100: Ultralight
  • 100 to 200: Light
  • 200 to 275: Moderate
  • 275 to 350: Heavy
  • Over 350: Ultraheavy

4. Comfort Ratio: 31.3

  • Under 20 indicates a lightweight racing boat
  • 20 to 30 indicates a coastal cruiser
  • 30 to 40 indicates a moderate offshore cruising boat
  • 40 to 50 indicates a heavy offshore boat
  • Over 50 indicates an extremely heavy offshore boat

5. Capsize Screening Formula: 1.7

  • Under 2.0 (the lower the better): Better suited for ocean passages
  • Over 2.0: Less suited for ocean passages

read more about these Key Performance Indicators...


Summary Analysis of the Design Ratios for the Finnsailor 35

1. A Sail Area/Displacement Ratio of just 10.0 suggests that the Finnsailor 35 will need a stiff breeze to get her going. In light conditions, unless you've got plenty of time on your hands, motor-sailing will be the way to go.

2. A Ballast/Displacement Ratio of 28.6 means that a sailboat like the Finnsailor 35 is likely to benefit from being reefed early to keep her sailing upright in a moderate breeze.

3. A Displacement/Length Ratio of 243, tells us the Finnsailor 35 is a moderate displacement cruiser, which means she'll carry all your cruising gear without it having a dramatic effect on her performance. Most of today's sailboats intended for offshore cruising fall into this displacement category.

4. Ted Brewer's Comfort Ratio of 31.3 suggests that crew comfort of a Finnsailor 35 in a seaway is similar to what you would associate with the motion of a moderate bluewater cruising boat - a predictable and acceptable motion for most seasoned sailors.

5. The Capsize Screening Formula (CSF) of 1.7 indicates that a Finnsailor 35 would be a safer choice of sailboat for an ocean passage than one with a CSF of more than 2.0. 


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