The Seastream 43, a heavy displacement pilothouse cutter, was designed by Ian Anderson and built in the UK by Seastream Yachts Ltd.
Underwater Profile: Fin keel & skeg-hung rudder
Hull Material: GRP (Fibreglass)
Length Overall: 43'8" (13.3m)
Waterline Length: 35'5" (10.8m)
Beam: 14'2" (4.3m)
Draft: 6'3" (1.9m)
Rig Type: Cutter
Displacement: 31,526lb (14,300kg)
Designer: Ian Anderson
Builder: Seastream Yachts Ltd (UK)
Year First Built: 1981
Number Built: 35
1. Sail Area/Displacement Ratio: Not published
2. Ballast/Displacement Ratio: 35.7
3. Displacement/Length Ratio: 316
4. Comfort Ratio: 37.9
5. Capsize Screening Formula: 1.8
1. In the absence of a published Sail Area/Displacement Ratio we are unable to make a performance assessment for the Seastream 43.
2. A Ballast/Displacement Ratio of 35.7 means that a sailboat like the Seastream 43 (which doesn't have a stiffness-enhancing bulb keel), is likely to benefit from being reefed early to keep her sailing upright in a moderate breeze.
3. A Displacement/Length Ratio of 316, tells us the Seastream 43 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 37.9 suggests that crew comfort of a Seastream 43 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 Seastream 43 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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