Since this forum is about Trawlers, may I suggest the Nordhavn 43. It mat not go above 10KMH but it will certainly be stable in a sea. Underway the engine is just a purr, hardily a noise. Fuel consumption is 3GPH. Comfort galore and space especially for 2/4 crew. Moving up from sail to a ship like this maybe an excellent choice Leonard Stern, INDIFFERENCE