In this June 16, 2013 file photo provided by Great Lakes Exploration Group, diver Jim Nowka of Great Lakes Exploration Group inspects a wooden beam extending from the floor of Lake Michigan that experts believe may be part of the Griffin, a ship that sank in 1679. The timber has been examined by U.S. and French experts and underwent a hospital CT scan and carbon dating to determine its age and whether it once was part of a vessel. Nearly a year later, reports obtained by The Associated Press and interviews with key players reveal sharp divisions over whether the elusive ship has been found. (AP Photo/Great Lakes Exploration Group, David J. Ruck, File)
TRAVERSE CITY, Mich.--- Members of a team that searched Lake Michigan for a lost 17th-century ship are divided over the likelihood that they've located the resting place of the Griffin.
Shipwreck hunters and scientists retrieved a 20-foot-long wooden beam from the lake bottom near Green Bay last June. They were disappointed to find it wasn't connected to shipwreck debris.
Now, reports obtained by The Associated Press show that some experts with the team believe the timber was simply part of an underwater fish-netting apparatus commonly used a century and more ago.
Mission leader Steve Libert and his allies insist the beam is probably the bowsprit of the Griffin or another vessel. He says he plans to continue searching this summer.
The Griffin and its cargo of furs were last seen in 1679.