Whitey Bay's icebreaker

Whitey Bay and her crew possesses an icebreaker (砕氷船, saihyōsen) for a ship.

Appearance
The icebreaker has steel-plated hulls instead of wood, which most other ships are made of in the series by far. Also, in place of a figurehead, the ship has a snow crystal insignia on the front. On board of the ship is the cabin, which also snow crystals painted on the walls, and has cannons mounted on top. There are masts and sails, with the front sail having the crew's Jolly Roger painted on it.

Abilities and Powers
The icebreaker has steel-plated hulls in lieu of the standard wooden ones, and as such, boasts a higher offense and defense. Its main purpose is to break through frozen waters, including the sea of ice created by Admiral Aokiji.

History
When Aokiji froze the waters around Marineford during the war, Whitey Bay had her icebreaker to smash through the ice in order for the other ships to enter the plaza to rescue Portgas D. Ace. In a stroke of luck, Monkey D. Luffy and his Impel Down escapee comrades had their ship crashed down into the route created by Bay's ship, thus saving them from suffering the impact of crashing into the hard ice.