is easy to operate, clean and service. The choice of a single engine complemented by an electric ... decks are cored with balsa. Fuel is carried in two aluminum tanks outboard of the engines ... in the semi-displacement range, even when powered by a single engine. At the 400's hull speed of about 8 ...

and thoughtfully laid out. Machinery installations seem neat and tidy, and service points on the main engines ... that gravity feed a day tank on centerline. An 11kW generator with a sound shield is abaft the engines ...