Nothing is more vital to the integrity of your boat than its seacocks. Have a problem with one of them, and you literally could be sunk. Depending on the size and type of your boat, you could have a few, or quite a few, down in your bilge, but you’ll certainly have them for your engine(s), genset, head(s) and other equipment. It’s also a good idea to have a mallet and tapered plugs, sized to fit, ready to go in case one of them totally fails. Here’s a good story from Sea about how to care for seacocks and how…