The Dell Latitude CPX series has a huge 14 inch screen, a Pentium 3 processor, and a TV out-put port. You can take this unit on your boat, hook it up to your GPS for nav info, hook it up to a small TV to watch a movie (on how to catch fish), hook it up to your digital camera to view pics, compose E-mails. execute tide prediction programs, and........

The CPX with 700 MHz processor can be had for about 500 bucks on E-bay.