Everybody thinks about fuel storage space. Never storage space given toward consumables and water. How much space is required to provide drinking, possibly showering during a one-week jump. Also, think about flushing the body waste (it happens)

I got this mainly for the older TL reaction drive stuff such as rocket propulsion we would use today and say 30 years from now. It is broken down like the cepheus SRD; very straightforward and textbook like. Lot of good stuff, no art, but it isn't intended to be that kind of supplement.

This book is worth it at even twice the price. If you are a gearhead who loves creating spacecraft, then this book is for you.

All in all it is a nicly presented exicution of the SRD material with a fair amount of additional material.