ISTANBUL The HMS Endeavour, the long-lost ship once helmed by renowned British explorer Capt. James Cook during his Pacific voyage, has been discovered off the coast of Rhode Island, bringing an end to a 250-year maritime mystery, the New York Post reported on Monday. The Australian National Maritime Museum announced the discovery, which follows decades of underwater exploration and historical research. The museum began its search for the Endeavour in 1999 and recently confirmed that a wreck in