A loading ramp from the MS Estonia which sank in 1994 has been recovered from the seabed and taken to port for investigation.
The ferry sank during a storm with the loss of 852 lives and an inquiry found that the ship’s bow door locks had failed, allowing water to gush in.
But a TV documentary later revealed a lengthy hole in the ship’s hull, prompting a new investigation.
Survivors hope it will provide a clear explanation of what went wrong.
The sinking of the Estonia, en route from Tallinn to Stockholm, was the biggest peacetime disaster involving a European passenger ship since the Titanic went down in 1912.