[Spaceships] Can't find the right propulsion system

[Rupert]

Of the rockets available in Spaceships, the ones that seem to produce decent thrust without too much burning doom or issues with casual anti-matter ownership seem to me to be the basic chemical rocket and a nuclear thermal rocket using water as reaction mass (or hydrogen if delta-vee is more important than thrust). One means having highly volatile fuel and oxidant sitting round, the other having fissile materials readily available to all and sundry.