PS: almost forgot, if you pushed cntrl-left arrow to get into the ipo curve screen then hit cntrl-right arrow to go back to the way your screen was setup previously
No, what mystery00 said is generally a bad idea because it will make the motion look unrealistic. It sounds like your problem is probably that you’re keyframing all the parts of the ship separate from each other. So, first delete all the keyframes you have by going to the NLA Editor, pressing A until everything is yellow, and pressing X. Now select all the objects that are part of your ship, then select the biggest one, or the one that’ll be easiest to select when you want to, it should turn a slightly brighter pink than all the other selected objects. Now press Ctrl+P. That’ll make the last object you selected the parent of all the other objects you selected, meaning that they’ll follow it wherever it goes. So now just keyframe that one object, and it should work, unless you have a different problem and I misunderstood you.