The Voyager 35 Sailboat
Specs & Key Performance Indicators

The Voyager 35, a heavy displacement pilothouse cruising boat, was designed by Angus Primrose and built in the UK by Trident Marine.

A Trident Voyager 35 pilothouse sailboat at anchor

In addition to this pilothouse ('Voyager') version, Trident Marine also produced a centre-cockpit ('Warrior') version and an aft-cockpit ('Challenger') version, all of which were based on the Primrose-designed 35-foot hull.

Published Specification for the Voyager 35

Underwater Profile: Long keel

Hull Material: GRP (Fibreglass)

Length Overall: 35'0" (10.7m)

Waterline Length: 26'1" (8.0m)

Beam: 10'6" (3.2m)

Draft: 5'0" (1.5m)

Rig Type: Masthead sloop

Displacement: 14,950lb (6,781kg)

Ballast: 5,100lb (2,313kg)

Designer: Angus Primrose

Builder: Trident Marine (UK)

Year First Built: 1972

Published Design Ratios for the Voyager 35

1. Sail Area/Displacement Ratio: 13.2

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: 41.3

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

3. Displacement/Length Ratio: 314

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

4. Comfort Ratio: 29.0

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: 1.8

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

Summary Analysis of the Design Ratios for the Voyager 35

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1. A Sail Area/Displacement Ratio of just 13.2 suggests that the Voyager 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 may be the way to go.

2. A Ballast/Displacement Ratio of 314 means that the Voyager 35 will stand up well to her canvas in a blow, helping her to power through the waves.

3. A Displacement/Length Ratio of 314, tells us the Voyager 35 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 30.1 suggests that crew comfort of a Voyager 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 1.8 indicates that a Voyager 35 would be a safer choice of sailboat for an ocean passage than one with a CSF of more than 2.0.