Georgs, While your working on definitions ... How bout working up a definition or specification that works for single handers. Not carrying around a crew reduces the need for consumable storage, berthing, general living space, etc. Fill that space with fuel and you may be able to design a smaller passagemaker that will go xxxxxx miles at s/l 1.0 on fuel carried internally. I'm interested to see what shapes up. Jim Slocomb M/V Sea Otter 40' Skookum San juan Islands --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.822 / Virus Database: 560 - Release Date: 12/22/2004