The Speed of Plot...
As AslanC says... The true answer simply cannot be done.
The next best thing is to have the ship move at the speed of plot. If you need your crew/ship to get to X from Y in 6 hours, simply make it the time required at cruising warp speed...
They want to go faster... OK, simply move the timetable forward or give them a side plot with a minor malfunction to keep the engineer happy in the meantime...
its what I do, and I have had no comments or complaints from my players, and it saves me many hours of development and record keeping that I simply do not have available any more.
In the end, players and narrators only want one thing, to play a game. If reality has to be suspended in order for them to assume the roles of members of Starfleet aboard a ftl ship travelling to a distant planet to save the day, then mores the better... After all, it should already be suspended enough...
DanG/Darth Gurden
The Voice of Reason and Sith Lord
“Putting the FUNK! back into Dysfunctional!”
Coming soon. The USS Ganymede NCC-80107
"Ad astrae per scientia" (To the stars through knowledge)