The Rival 34, a masthead sloop, was designed by Peter Brett and built in the UK by Southern Shipbuilding Ltd.
Underwater Profile: Fin keel with skeg-hung rudder
Hull Material: GRP (Fibreglass)
Length Overall: 34'0" (10.4m)
Waterline Length: 24'10" (7.6m)
Beam: 9'8" (3.0m)
Draft: 5'10" (1.8m) - Shoal draft version: 4'8" (1.4m)
Rig Type: Masthead sloop
Displacement: 11,900lb (5,398kg)
Designer: Peter Brett
Builder: Southern Shipbuilding (UK)
Year First Built: 1972
Number Built: 174
Owners Association: Rival Owners Association
1. Sail Area/Displacement Ratio: 13.9
2. Ballast/Displacement Ratio: 39.5
3. Displacement/Length Ratio: 347
4. Comfort Ratio: 32.5
5. Capsize Screening Formula: 1.7
read more about these all-revealing numbers...
1. A Sail Area/Displacement Ratio of just 13.9 suggests that the Rival 34 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 39.5 means that the Rival 34 will initially stand up reasonably well to her canvas in a moderate breeze, but she'll need a reef in the main to avoid heeling excessively in a gust.
3. A Displacement/Length Ratio of 347, tells us the Rival 34 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 32.5 suggests that crew comfort of a Rival 34 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 tells us that a Rival 34 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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