The Vindo 45 Sailboat
Specs & Key Performance Indicators

The Vindo 45, a heavy displacement masthead sloop, was designed by John H. Lindblom and built in Sweden by Vindö Marin AB.

Vindo 45A Vindo 45 at anchor
Don't be fooled by the '45' - she's just 33'8" overall

Published Specification for the Vindo 45

Underwater Profile: Long keel with cut-away forefoot

Hull Material: GRP (Fibreglass)

Length Overall: 33'8" (10.3m)

Waterline Length: 26'9" (8.2m)

Beam: 10'10" (3.3m)

Draft: 5'2" (1.6m)

Rig Type: Masthead sloop

Displacement: 13,000lb (5,897kg)

Ballast: 5,510lb (2,499kg)

Designer: John H. Lindblom

Builder: Vindö Marin AB (Sweden)

Year First Built: 1981

Year Last Built: 1989

Published Design Ratios for the Vindo 45

1. Sail Area/Displacement Ratio: 14.2

  • 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: 42.4

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

3. Displacement/Length Ratio: 303

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

4. Comfort Ratio: 29.2

  • 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: 1.9

  • 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 Vindo 45

1. A Sail Area/Displacement Ratio of just 14.7 suggests that the Vindo 45 will need a stiff breeze to get her going. In light conditions, unless you've got plenty of time on your hands, motor-sailing may be the way to go.

2. A Ballast/Displacement Ratio of 42.4 means that the Vindo 45 will stand up well to her canvas in a blow, helping her to power through the waves.

3. A Displacement/Length Ratio of 303 tells us the Vindo 45 is clearly a heavy displacement cruising boat. You can load her down with all your cruising gear and equipment and it will hardly affect her waterline. Not an ideal choice for coastal sailing, but she'll come into her own on an offshore passage in testing conditions.

4. Ted Brewer's Comfort Ratio of 29.2 suggests that crew comfort of a Vindo 45 in a seaway is similar to what you would associate with the motion of a coastal cruiser with moderate stability, which is not the best of news for anyone prone to seasickness. 

5. The Capsize Screening Formula (CSF) of 1.9 indicates that a Vindo 45 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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