Cargo Units or CU represents the total number of components that you can add to your ship. Ships are rated according to their Hull Class which represents the overall size of the ship and each Hull Class provides specific values for Tonnage, Cost, Crew requirements, Cargo Units, Defense, Fuel, and Initiative penalties.

Campared, to Traveller's ship construction, this is a breeze! Simply, choose from a list of options and keep track of everything via the provided worksheet. After reading it, I am pleasantly suprised how easy the system is. Upon receiving my download, I was anxious to start reading on how to design ships. I bought the WOIN Starship Construction Manual in both print and pdf.