The button press on the keyboard to order Ahead Standard. Don't confuse "Full" with "Standard". Either way though, you should not be having 25% usage and then not be able to make it back to Tulagi. Are you using 100% Stock, or have you ever applied a mod at all to your game? If you have, open your JSGME, and in the middle there, is "Tasks...", so click on it, then on "Export activated mod list to -->", then on "Clipboard". Use <Ctrl><V> to paste your list into your next reply. Something is not right with your set-up... also mention which boat you use each time you run this. Do you get a "Bingo Fuel" message at all? Where they warn you "Sir, we have used almost 50% of our fuel."?? Are you using a career here, or a Single (Quick) Mission?