The Duke of Northumberland was a wooden paddle tug built by C Chisholm, Shields, and launched in 1856. She sank on 18th May 1858 after a collision with the SS Thistle in the early hours of the morning. The SS Thistle circled for over an hour to pick up any survivors, but saw none. This was because the crew of the Duke of Northumberland had made a quick escape in their boat, landing at Millport some 90 minutes later.