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.
How does the Myo armband work? Using proprietary EMG sensors, the Myo armband measures electrical activity from your muscles to detect five gestures made by your hands. Using a 9-axis IMU, it also senses the motion, orientation and rotation of your forearm. The Myo armband transmits this information over a Bluetooth Smart connection to communicate with compatible devices.