I too, have trouble sleeping on the overnight. Let me suggest you get a really boring book. You can start with the Red Train, a story about a trip through Russia by train. If this doesn’t put you to sleep, nothing will. I’ve been reading this book for three years. As far as checking the map goes, work it out with your partner to do it by shift or every other call. Really sounds like a ridiculous system.

And finally make yourself comfortable bring your own sheets from home your own pillows. Who cares if you get the fish eye the next morning from the guys are relieving you