Spacer as Soldier

[Kromm]

Letting Spacer work that way is fine; as has been pointed out, GURPS Spaceships says as much. The cutoff in GURPS Fourth Edition remains "someone with the specialized skill would roll at +4 or better," and the task must correspond to "routine use of standard equipment by ordinary personnel." The origin of that +4 isn't terribly important: a really good interface (Equipment Modifiers, p. B345), extra time (Time Spent, p. B345), or just a trivial task (Task Difficulty, pp. B345-346). What is important is that you can't confront challenges, improvise, or figure out gear you've never seen – you can only do your job exactly according to the manual for the systems you were trained on.