I would go with Portra 400 which will work both inside and outside the ship. Great for anything you come across during an excursion. [Added: I use Portra 400 for 35mm and 120*]
* READ: Hasselblad with the fastest shutter speed of 1/500 second
I used Portra 400 and T-Max 400 on my last trip. Summer down here, some really sunny days and, even with a Hasselblad (top shutter speed is 1/500), I didn't get overexposed shots. Had to close all the way down to f/32 in some cases, though.