Weapons for nuts and bolts: You'll want to have a full socket set to go after the endless assortment of nuts and bolts you'll find on your boat. It should have both standard and metric sockets along with an extension or two. Also carry as complete a set of combination wrenches as you can. These can often reach where a socket wrench cannot. Large adjustable pliers will work in a pinch when you find that your wrench set isn't as complete as you thought. Ditto for small, medium and large adjustable wrenches, often referred to as crescent wrenches. And don't forget Vise-Grip pliers. If nothing else, this tool is remarkably good at cracking lobster shells. And lastly, don't leave your Allen keys at home. Be sure to have a full set of metric and standard Allen wrenches, also known as hex keys, on hand. From stanchion bases to zincs, Allen keys can come in handy in surprising places.