U.S. Coast Guard investigators are resuming their probe of the deadly sinking of a cargo ship during a hurricane last fall, with two weeks of hearings to examine ship operations, weather forecasts and regulatory oversight getting underway.

Some two dozen maritime experts are set to testify during a second round of hearings before the Coast Guard’s Marine Board of Investigation on the worst cargo shipping disaster involving a U.S.-flagged vessel in more than three decades.

Jerry Halen and Rich Brown, of Applied Weather Technology, were scheduled to take the stand Wednesday.

All 33 crew on board died in the sinking of the El Faro off the Bahamas on Oct. 1 last year. Five who died had ties to Maine. The 790-foot ship went down in a hurricane while on a cargo run between Florida and Puerto Rico.