ALBANY, N.Y. — Research has determined nine cannons displayed for the past 60 years at a recreated French and Indian War fort in upstate New York were originally aboard a British warship that sank in the Florida Keys in the 18th century, according to an underwater archaeologist who led the project.

Joseph Zarzynski, of Wilton, N.Y., said a study of all 68 cannons at Fort William Henry found that some, if not all, of the nine iron cannons likely came from HMS Looe, a British warship that sank after hitting a reef in 1744.

Zarzynski said it was known when the replica fort opened in 1954 on the southern end of Lake George that some of the cannons were thought to have come from a British shipwreck in the Keys. The exact source wasn't pinpointed until volunteer researchers deduced the guns came from the Looe, a 44-gun frigate built in England in 1741, Zarzynski said.

“All the evidence points to it,” he said.

The original Fort William Henry, built by the British in 1755 during the French and Indian War, was destroyed two years later after being captured by the French.

A full-size replica fort was built on the same footprint of the original in the Adirondack village of Lake George.

Before the tourist attraction opened in the summer of 1954, the fort's owners sought Colonial-era cannons to display on the ramparts. Among the artillery pieces purchased were nine guns discovered a few years earlier off Looe Key, now part of Florida Keys National Marine Sanctuary.

Local newspaper stories about the fort's purchase said the cannons were bought from Art McKee, a Florida treasure hunter who salvaged the weapons after the Smithsonian Institution recovered other shipwreck artifacts from Looe Key, named for the British ship thought to have sunk there along with a captured Spanish vessel it was escorting.

The 1950s newspaper articles also said the cannons bore insignia indicating the weapons belonged to the British Crown. Those markings have since disappeared after being exposed to decades of Adirondack winters.

A 1967 arson fire destroyed many of the fort's records pertaining to artifact acquisitions, Zarzynski said.

A project begun in 2014 to measure and document all the fort's 49 replica cannons and 19 historic artillery pieces led researchers to trace the origins of the nine guns purchased in 1954, he said.

The fort's researchers discovered the caliber of the nine cannons matched that of the armament known to have been aboard HMS Looe when it sank. That and McKee's role in the guns' salvage, leads researchers to think the Looe was the source, Zarzynski said.