Propeller found on seabed of Cork Harbour to be restored to confirm if it belonged to German U-boat

Artefact believed to belong to German submarine which sank in 1917, killing all 27 crew on board

Members of Mizen Archaeology and the National Monuments Service with the propeller found in Cork Harbour in June.

A propeller discovered at the bottom of Cork Harbour will be painstakingly restored as researchers strive to understand what happened on a tragic day in the First World War when a German U-boat sank to the bottom of the sea.

It is believed the marine artefact belonged to a German U-boat that sunk in 1917 at the entrance to the harbour, but this will only be confirmed after painstaking work to clean it is completed.