"classmates" . "ship class" . "Ship class naming conventions" . "semi-official" . . "ship's class" . "Ship Mind classes" . "class name" . . "a pair" . . "sailboat class" . "sub-class" . "lead boat class" . . "five-ton" . "Ship class" . . "subclass" . "series" . "classes" . "''Coquette''" . . . . "types" . "Class" . "class" . "Ship class" . "group" .