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Old 09-02-2016, 06:38 AM   #328
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Join Date: Oct 2007
Posts: 18,415
An extra $5k saved here and there does add up, as is the big difference in fuel economy. So I'm giving it serious consideration

At displacement speeds wetted area , skin friction is about equal to wave making resistance.

Long and thin has higher wetted areas so is less efficient at low displacement speeds.

In terms of economy a beach ball underwater would be winner .
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