In Lost, what was the name of the submarine used by the Others?

In Lost, the submarine used by the Others was called the Galaga.

The Galaga was a modern submarine operated by the Others. Its existence demonstrated that the island was not completely cut off from the outside world, despite the survivors’ difficulty communicating with anyone beyond the island.

The vessel was used to transport people and supplies between the island and the outside world. It also helped explain how the Others could maintain links to modern society while living in the island’s remote environment.

The Galaga is sometimes confused with the Kahana, which was the freighter sent by Charles Widmore’s team, or the Elizabeth, which was Desmond Hume’s sailboat. The Black Rock was an old sailing ship that reached the island long before the submarine appeared in the story.