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.

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.