Investigators hope raising the wreckage of a fishing boat that sank in the Bay of Fundy last winter, killing all aboard, may dredge up some much-needed answers.

Early Tuesday morning, a flotilla of barges and fishing boats converged on a remote stretch of the New Brunswick coast where the Lo-Da-Kash was lost as it made a return trip from Campobello Island to Maces Bay last January.

They were there to raise the boat's sunken wreckage from its resting place, some 30 metres below the water's surface.

The 12-metre fishing boat was first located about a week after it sank off the southwestern coast of New Brunswick. The bodies of two crew members were trapped inside.

Another crew member was found in a nearby cove, but the captain, Paul Wilson, was never recovered.

The sister of one of the four crew who perished that day believes it's time to dredge up the mysteries that sank with the boat.

"It might gives us answers that we haven't had before," Kim Gaudett told CTV's Atlantic affiliate, ATV News. "Instead of speculation, maybe this time we'll get answers -- the right answer."

Since the wreckage was located, investigators have been unable to offer the victims' relatives anything more than speculation on why it went down.

The only way to answer all the outstanding questions, New Brunswick's Transportation Safety Board says, is to examine the wreckage.

The safety board's John Cottreau says an inspection should reveal whether changes were made, or particular equipment added, that contributed to the urchin dragger's demise.

"If modifications were done to it, they can reduce the inherent stability of the boat, and that's what we're going to take a look at," Cottreau told ATV.

After that, the board plans to issue a public report on the mishap.