No it is not.
Hull, mast, sail, lines, anchor, lights, keel, galley
bow bilge stern deck mast sails keel rigging hull bulkhead
The main mast is the tallest of all masts on the ship. If all masts are the same height, then the one with the top navigationlight is the main mast. If there is only one mast, then that would be the main mast.
Where & when the keel was laid down; meaning when they started building the bottom of the ship (the keel is the bottom of the ship). Like a person's spine and ribs, a ship is the same way, only made of metal instead of bone.
keel
The mast of a ship is very important to the movement and navigation of the ship.
keel refers to as two parts of a ship
You are describing the mast.
31.25 ' stem to stern by 160 ' keel to tip of mast, it was small, fast and deadly! The perfect pirate ship! Check the wooden models they are excellent references and very precise!
Keel
A keel
The very bottom of a ship is where you find the keel. The keel runs the full length of the ship along its centerline and is the backbone of the hull. From the keel all the frames run out and up. the hull is attached to the frames. Picture the keel as the backbone and the frames as the ribs. The hull is the watertight skin that allows the ship to float. Within the hull are compartments (rooms) and at the top of the hull is the main deck. The superstructure is built upon the main deck.