"Orgrim's Hammer is the name of the Horde gunship flying over northeastern Icecrown. It replaces the usual ground bases in other zones due to the large Scourge presence on the ground. It sometimes engages in battle against the Skybreaker, the Alliance gunship. So far, neither have been severely damaged, but both are in constant danger of attack from the other and from the Scourge forces on the ground below them. It is named in honor of Orgrim Doomhammer.
The latest in goblin zeppelin engineering, the ship is held aloft by two large balloons on either side of it. In order for engineers to service both balloons, and to prevent them from drifting apart, a large metal catwalk links the two together. While the balloons would appear rather delicate and vulnerable at first, a closer look reveals that solid steel hides beneath the crude fabric. Unlike most goblin Zeppelins, which are prone to malfunction, this gunship bolsters a better use of Goblin mechanics, keeping it from malfunctioning, such as the normal Zeppelins are prone to do.
Just as the Skybreaker has a large bomb on board, Orgrim's Hammer has an enormous main cannon positioned at the front of the craft, beginning nearly halfway to the back of the ship and ending by poking out of the mouth of a large, stone wolf head, positioned at the ship's front. However, just like the Alliance's bomb, the cannon is not used in-game. There is an interesting glitch involving the cannon or if one flies into the opening and right to the back, they will find themselves stuck, presumably behind a one-way invisible wall or a spot from which the only way to escape is by hearthing."