In Britain, it means diddly. It means you're a male, presumably respectable. If you have no other title, then the overly-British will put esq. after your name on an envelope, etc. In America, I believe it's sometimes used after a lawyer's surname. However, I don't see it used much by U.S. lawyers.
Davit systems are most often used to lower an emergency lifeboat to the embarkation level to be boarded. Davits can also be used as man-overboard safety devices to retrieve personnel from the water. The lifeboat davit has falls (now made of wire, historically of manila rope) that are used to lower the lifeboat into the water.
If the confined space requires vertical entry, and there is not a fixed ladder, you'll need either a davit arm or a tripod. For task-specific work such as manhole entry, a tripod is a great option. Tripods easily are set-up by one worker and can be transported from one location to another.