Cats are natural sailors
We have been cruising for five years (living aboard three) with Splat the Cat. Splat has been an outdoor farm cat, outdoor neighborhood cat and indoor house cat. He has no front claws, so falling overboard has always been a concern. We have trained him to stay in the cockpit (center). We have sceened in the cockpit to keep the cat in and the bugs out. We highly recommend screening. Even with the screening Splat sometimes likes to sneak out on the back deck to see what we are doing, but that is very rare. As soon as we get under way, he comes right up into the cockpit to share in the watches. He gets excited when we catch fish (especially tuna) because he likes fresh sushimi. Regular brushing to remove shedding hair is a must. We do not use regular cat litter, which is clay and can get into the bilge. We use small aquarium rocks (small pea size) on top of a commercial sorbent pad. Two sets of rocks, washing, bleaching and drying one set at a time in a one-gallon plastic bucket with small holes (smaller than the rocks) drilled in the bottom. We change out the rocks and pad each week. There is a new cat litter we are trying while staying on land while the boat is in the boat yard for repairs. It is "Crystals" and might work well on a boat because they last much longer than normal cat litter and there seems to be no smell. If you are interested in the source for the pads, email me through the HOW Owner's Directory. The only problem we have had is fiberglass dust. Cats are very sensitive to it and need to be removed from the boat during projects that produce dust. Splat got a serious respiratory infection in the Bahamas after we did some electronics installations, but a local Vet. did a great diagnosis. He was cured with six shots of antibiotics (we gave him the last five shots on board). We have really enjoyed having Splat the Cat on board. He is the Security Officer.