A replica of the Endeavour sits in the water
In this file photo, the Endeavour, a replica of Captain James Cook's ship of discovery, lies at anchor in Botany Bay in Sydney, Australia.
  • Australian researchers believe a shipwreck off the coast of Rhode Island is that of the HMS Endeavor.
  • The Australian National Maritime Museum said Thursday new discoveries allowed them to identify the wreck.
  • Previously, their claim was contested by their research partner, The Rhode Island Maritime Archeology Project.

An Australian museum is doubling down on its previously contested claim that a shipwreck off the coast of Rhode Island is the long-lost ship once sailed by British explorer and cartographer Captain James Cook.