Electronics for Boat

handheld GPS

Family radios (4x, for use when crew is split)
Head lights (for working/reading at night)

AA and AAA rechargeable batteries
12V chargers
    - AA/AAA
    - Canon camera
 
Linux laptop

 
Cameras:
Canon camera and spare batteries
Canon (DLSR) camera and spare batteries
Nikon cameras
Dive case for Nikon
Dive camera and accessories
Solar Charger
USB mini cable
USB micro cable
12V USB adapter
 
E-readers/tablet:  (be sure to load e-books!)
Nook simple touch
Nook color (x2)
Kindle
Nexus 7
SD cards
Flash cards

Music Players: (be sure to load audio books and music!)
Sansa clips 3x
Cowen 
Ipod nano