Yeah, duh, huh? Laptops are actually pretty reliable machines these days, even the non-ruggedized versions that don’t cost megabucks. Experience has shown that they can be used successfully for years in the marine environment, and there are a few simple things you can do to prolong their lives. Aside from avoiding direct splashes or immersion, the most important thing is to control exposure to moisture laden salt air. Luckily, this risk is effectively managed by keeping your machine on when in use, and packing it away in a sealed case when it’s turned off. Basically, as long as it’s on, the heat generated by the electrical components drives moisture out and prevents corrosion. When turned-off, transfer the machine to a sealed protective case, and include a packet of desiccant to absorb any residual airborne moisture. Remember to recharge the desiccant regularly, i.e. by popping it in an oven for a few minutes.