Photography and Technology Gear for Antarctic Voyage

I buy most of my gear from B&H Photo Video or used off of POTN or Fred Miranda.  I am also a born and bred Canon shooter. Bodies Canon 1D Mark IIn Canon 1Ds Canon SD550 (trusty old P&S) Lenses Canon 300mm f2.8L IS Canon 70-200mm f2.8L IS Canon 24-105mm F4L IS Canon 35mm f2.0…