There are two main parts of a ship: the hull and the machinery. The hull is the actual shell of the ship including her _1__ . The rear portion of the ship is called the after end or_2_. When moving stern first, the vessel is said to be moving _3__ . The front portion of the ship is called the fore end , whilst the extreme forward end is called the _4__ . When moving bow first, the vessel is said to be moving ahead . Fore and aft are generally used for directional purposes. The area between the forward and aft portions of the vessel is called _5__ .