Oooh, wait! What the heck!
Imperial Encyclopedia, p. 92
"...To engage jump drive:
"Routine, Engineering, Edu, 2 min
"Referee: This task can begin once a successful jump preparation has been accomplished.
"If the ship is using unrefined fuel (without a fuel purification plant), this task is hazardous.
"
Safe Jump: A ship at least 100 diameters out from all massive bodies, using the proper fuel, and with properly maintained drives can make a safe jump with no chance of a mishap.
"Dangerous Jump: If the ship is within 100 diameters of a massive body, this task is Difficult (hazardous).
"Desperate Jump: If the ship is within 10 diameters of a massive body, this task is Formidable (hazardous).
"Mishap: If a mishap occurs, go to step 15."
Damn, but I hate the way this game organizes its rules!