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.
1 Riding - Ride with your arms at full extension (this keeps your arms from tiring,) your knees in the divits, and the strap on relatively tight.  Turning - While riding, hold on tightly to the tow rope, and lean your body to one side. This should put the kneeboard on its edge, and take you outside of the boat's wake.