A detailed modular spaceship design system for GURPS Traveller, covering (GURPS) tech levels from 7 to 12, and capable of designing ships from 10-ton launches up to half-million-ton dreadnaughts. Several example craft are presented, including fighters, safari ships, system defence boats, lab ships, cruisers, container ships, and dreadnaughts. There are also chapters on starship operations and life on board.