Harkaway

The Harkaway ship is supposedly the name of Jolly Roger's flagship.

It is a three-masted war frigate. The ship was probably Spanish but was later commandeered by Jolly Roger and turned into his flagship. It seems that the Phantom is a 17th century built frigate, in look very similar to Galleon, but much faster.

First Appearance
During the Tutorial, the flagship appeared under Jolly's command, and attacked Bo Beck's ship the Grim Reaper. As the player was thrown into the water, the ship fires Firebrand at the Reaper, breaking it into pieces

In-game History
In the fall of 2008, a Marceline Guild pirate named Sir Victor Mayhew told of a Harkaway ship coming soon. This was probably a hint of the Invasions, in which the flagship of Jolly Roger is in a stand-by, while the undead troops storm down into the beaches of the attacked islands. It doesn't attack the targets, but instead waits for either a Victory or Loss of Jolly Roger, in which case it takes of and leaves the targeted island.

Abilities
Although the ship's sails are ragged and nonfunctional, the ship moves rather fast, similar to the Black Pearl. The ship also has the ability to teleport to other places, emerging from supernatural fog. It is unknown if Jolly Roger uses his powers to teleport it or if its just the ships nature. It has also been seen that the ship can fire Firebrand broadsides, it is assumable it also fires Fury and Thunderbolt.