Vessel hull construction - has convex bow, and concave stern, rising above water line, and flanked by lobes

摘要

Vessel construction, e.g. of sea-going speed boat, includes hull (1) with bone section (2) of convex shape, amd stern section (3) of concave shape. Hull centre line (4) rises above water line (6) an dis flanked by lobes (5) below waterline. Design avoids aqua planing action at high speed.