Any GURPS stats for black holes, pulsars, etc?

[Agemegos]

I don't think that's right. With the Bergenholm on your intrinsic velocity away from the gravitating mass ceases to have any effect, and all that matters is the resultant of vector addition of your thrust and gravity. A spaceship with inertia will in general orbit around a massive body, safely except for tidal strain. A free one will instantaneously acquire a superluminal velocity directly towards it. Go free wherethe gravity points towards a planet and you will near-instantly but harmlessly hit the ground. Do it where the gravity points towards a star or such and then, unless you are very quick to acquire some thrust, you will near-instantly contact its surface or come to a buoyant equilibrium within it, subject to terrible tidal strains and quiet possibly in a graviational field too strong for your motor to get you out of.