SEATTLE -- The Coast Guard board investigating the sinking of a fishing vessel in the Bering Sea reconvened in Tuesday in Seatle.

The board met at the Divers Institute of Technology to test the buoyancy of a life raft from the Katmai to determine if it inflated properly.

The raft - which was found after the sinking - partially inflated Tuesday during the test in Seattle.

But Coast Guard Cmdr. Rob McLellan says the test didn't answer whether or not the raft actually was inflated, even partially, at the time of the sinking.

At least two crew members - among four who survived in another raft - have testified they saw the raft on the waves and that it appeared to have air in it.

But when it was found after the disaster, it did not appear to be inflated, and McLellan says it's impossible to say for certain what condition the raft was in when those crew members spotted it.

"I think the best thing we have at this point is the testimony of some survivors, and so we have to go back and analyze what we just did today," said Lt. Scott White.

The Seattle-based Katmai went down Oct. 22 off the Aleutian Islands.

The Katmai took on water early that morning, and only four of the 11 crew members survived. The bodies of five of the men have been recovered, but two of the crew members remain missing.

The survivors and their family members have shared their stories of the crew members' darkest hours. They wore survival suits and were rescued from a life raft after 17 hours.

"He said that all the guys just supported each other and worked together as a team," said Rebecca Foster, a mother of a survivor. "If the raft tipped over, they worked together to get it back over and get the men back in the boat."

That life raft is now at the center of the ongoing investigation. Back in November, the board questioned a Seattle company that sold the life rafts to the Katmai.

"Based on what we see, the raft did not have its equipment; didn't have its inflation bottle," McClellan said.

Aside from the condition of the life raft, investigators have a number of questions they need answers to in order to figure out exactly what went wrong with the 93-foot vessel.

They expect to issue a final report in two to three months.