Bessie Bass's Battleship is fourth level of World 3 in Yoshi's Island DS, which acts as Bessie Bass's home. Although not necessarily long, the level does feature several doors and rooms, some of which are locked, which can be confusing to the player. The Boss, Bessie Bass, is located in the second locked door, and can be battled once the key is obtained. There is an outdoors section of the level with Bullet Bills. There are several indoors parts, each with different enemies. On the outside, it is raining and has lots of pipes and doors. The enemies there are Pirate Guys, Goonies, and Bullet Bills. If the player jumps into the sea, they can see Tube Guys and a Boss Bass. In the first pipe, there are Gooey Goons. In the second pipe, there are a bunch of Koopa Troopas, Paratroopas, and Koopa Troopas with no shell. There are also some Hermit Crabs. In the first door in the second pipe, there are Pirate Guys. There are also Potted Ghosts and Boos.
 Names in other Languages
Nazo no Kaizokusen
|Enigmatic Pirate Ship
||Berta Breitbarschs Brigg der Piraten
||"Bessie Bass's Pirate Brig"