The Transportation Safety Board of Canada is changing course and doing its own inquiry into how Laura Gainey was swept off the Nova Scotia-based tall ship Picton Castle.

The TSB made the decision last week after hearing that the South Pacific island that led a probe over the past year isn't planning to amend its contested final report into her death.

The daughter of Montreal Canadiens general manager Bob Gainey was swept off the three-masted barque on Dec. 8, when a large wave came over the rear deck in a North Atlantic gale.

The ship was in the Atlantic Ocean, about 760 kilometres southeast of Cape Cod, Mass., en route to Grenada.

The board originally said it wouldn't do a Canadian investigation into the tragedy because it said it didn't have jurisdiction because the Lunenburg-based tall ship had registered in the Cook Islands.

But board spokesman John Cottreau said the TSB has now done its own initial review, and determined that Gainey was extremely tired, and there are safety issues such as training it wants to examine.

Garth Broadhead, the head of the Cook Islands marine board of inquiry, said he stands by his original report. He said once it was issued in July, he was legally prohibited from changing it.