An anchor is a Greek word for something that keeps a boat in place.
A boat is kept in place by an anchor.
It keeps your boat from exploding.
dock
Basically, the hull on a boat keeps out the water, and displaces the water to create buoyancy, which enables the boat to float.
A harbour boat is of course called a harbour boat.
Keel
Autopilot keeps an aircraft on course. In modern times autopilot is assisted by GPS and radar.
boat doesn't mean anything in Greek, but if you mean whats the Greek word for boat its καράβι/karavi
Yes, Boat covers really do protect your boat. They have a soft felt liner on the inside that keeps the rougher, outer protection layer from scratching the paint of the boat.
the back of the boat
Of course