It appears to me that this message never went through (I checked my spam filter log and it claims it didn't eat it). I'll try again. I apologize if this is a duplication. Georgs asked, "Is there an optimum size of vessel for passagemaking under power?" Many intelligent answers have been provided, however I think far too many boaters focus too much attention on length and not enough attention is given to the overall boat. Assuming the same prismatic coefficient, a 60 foot boat with L/B of 5 (i.e. a 12 ft beam) provides the same internal area as a 44 foot boat with a L/B of 2.7 (i.e. a 16 ft 4 in beam). In many cases displacement is a better comparison. Assuming constant draft and block coefficient, internal volume is directly proportional to displacement. Cost (sans electronics) is also proportional to displacement. I think a better question would be what is the ideal L/B for a passagemaker? A high L/B ratio will improve fuel economy and provide better directional stability which delays when you need to deploy drogues or sea anchors. Regards; Mike Schooley Designing "Portager" a transportable Passagemaker