Pt boat & vietnam era boat plans. coastal forces plans. we carry a selection of pt boats plans from coastal forces. these plans are large scale and very detailed.. The first and only operational roller ship, the 280-ton ernest-bazin, was designed by the french inventor ernest bazin after five years of model-based tests and launched at saint-denis on august 19, 1896. it had three pairs of discs ten-metres in diameter and three-metres thick; each pair was independently driven by a fifty-horsepower engine and, under normal conditions, about one-third submerged.. 18′ bayliner 185: it all clean and ready for a new home. very good family boat. 8 passenger, has about 30 hr on motor. was not used much. looks and runs like new. gas motor, i – o , mercury motor,will come with water tube and rope. some life jackets and paddles, anchor trailer comes with boat..