The major parts of a ship
The core of a ship is the structural keel, a heavily reinforced spine which runs along the bottom, in the middle. The keel supports the structure of the ship, and is the first part to be built, since it serves as a foundation.
The framework for the hull or shell, the body, is attached to the keel.
The hull is the most visible part of a ship, because it is the body of the water craft. The hull makes the ship buoyant while providing shelter to those on board.
Bulkheads are compartments which run across the ship from side to side, creating isolated areas, while decks are analogous to the floors of a house.
A small boat may only have one primary deck, while larger ones may have over 10 decks, stacked from top to bottom.
The top deck is broken up by the bridge, a covered room which serves as the command center. On larger ships, the top deck may have several levels, designed to isolate various parts.
The front region is called the bow, and the rear is the stern. When someone is forward, they are in the front of the boat, while a sailor located amidships would be in the middle, and a person to the rear is aft. The right hand side is starboard, and the left is port.
http://www.wisegeek.org/what-are-the-major-parts-of-a-ship.htm
The organisation Eckankar is a large ship.
Paul Twitchell is the Keel.
His writings are the foundation framework for the Hull or Body of the ship, which make it float.
The Hull is attached to the Keel which supports the whole structure of the ship.
It doesn't matter how many decks are built or what they look like; or what the super structure is used for; nor matter what the Bridge & Command Centre look like; nor who is the Captain of the ship today.... the ship only floats because of the structural integrity of the Keel and the Hull.