This book should be your #2 buy after you get your hands on Stars Without Number. The sourcebook covers a wider range of ship building options, naval careers, and genreally plays up the space side of being in space.
this is a must if you wanted to play anything from a deep explorer with the latest upgrades in their craft, to inner-system freebooters loaded with contraband gear.
A tight and always useful book.
[5 of 5 Stars!]