Hi all, besides sailing I tend to dabble a bit in electronics every now and again. I decided it would be nice to design and build my own sailing watch / wearable computer.

What type of functions would you like to have integrated into such an appliance if you could design this yourself?

I was thinking along these lines:
- Water and shock proof
- relatively compact but:
- large reflective LCD (matrix) display
- countdown timers for starts
- electronic compass (adjustable)
- Time and Tide info
- USB interface for loading tide data etc

What have you found to come in handy in a good start watch?

Thanks,
Dennis