Final answer:
The USS Maine was the US ship that sank in Havana harbor in 1898. The ship's explosion resulted in the deaths of over 250 American sailors and was initially attributed to a Spanish attack.
Step-by-step explanation:
The name of the US ship that sank in Havana harbor in 1898 was the USS Maine. On February 15, 1898, the Maine mysteriously exploded just outside Havana, resulting in the deaths of over 250 American sailors. The explosion was initially blamed on a Spanish attack by the sensationalist US press, but later investigations concluded it was likely an accident caused by the stored fuel on board.