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.
Fully abduct the patient's arm, so that their hand is over their head. Now ask them to slowly lower it to their side. If the suprapinatus is torn, at ~ 90 degrees the arm will seem to suddenly drop towards the body. This is because the torn muscle cant adequately support movement thru the remainder of the arc of adduction.