Sea Sail Boat

The keel is a lengthwise structural member to which the frames are fixed (sometimes referred to as a backbone).
The front (or forward end) of a boat is called the bow. Boats of earlier times often featured a figurehead protruding from the front of the bows. The rear (or aft end) of the boat is called the stern. The right side (facing forward) is starboard and the left side is port.