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Old 01-25-2013, 01:21 PM   #7
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City: Northern California
Join Date: Jan 2013
Posts: 409

What design eeks out the best nm per gallon burned? A catamaran trawler? As to engine, a long stroke medium speed diesel with hp peak below 1800 rpm or the modern, smaller displacement turbocharged Yanmar. I already know what props are most efficient, as large as can be fitted with a deep pitch for slow rpm.
USCG Unlimited Tonnage Open Ocean (CMA)
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