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.
3. If a victim has an injured arm, a triangular bandage can be used as a sling, to support the arm in a bent position over the chest. A second cravat (folded as a long band) can be used around the torso as a swathe, to immobilize the arm against the chest. This technique is called a sling and swathe.