{"id":10988,"date":"2010-04-04T21:08:20","date_gmt":"2010-04-05T02:08:20","guid":{"rendered":"https:\/\/setsail.com\/stern-release\/"},"modified":"2010-04-04T21:08:20","modified_gmt":"2010-04-05T02:08:20","slug":"stern-release","status":"publish","type":"post","link":"https:\/\/setsail.com\/stern-release\/","title":{"rendered":"Stern Release"},"content":{"rendered":"
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One of the design aspects which requires careful attention is the water flow towards and then off the stern. A hull like the FPB 64 can handle a certain amount of immersion of the transom and still be efficient, but if the water release isn’t clean excessive drag is the result.<\/p>\n
The photos in this blog were taken at full load, running at 1600 RPM at about 9.5 knots. The FPB 64 has a out eight knots of true wind behind her and a four to six foot (1.2 to 1.85m) swell adding a little push.<\/p>\n
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When the boat slowed down on a wave the water tended to pile up a bit, occasionally covering half of the engine exhaust flap.<\/p>\n
Without a clean release like this it would not be possible to hit th type of fuel burn numbers we are seeing.<\/p>\n","protected":false},"excerpt":{"rendered":"