HMS Seal (N37)

HMS Seal was one of six ships of the Grampus-class mine-laying submarines of the Royal Navy. She served in the Second World War and was captured by the Kriegsmarine and taken into German service as UB. She was the only submarine the Germans captured at sea during World War II. Her capture allowed the Germans to correct a critical fault in their U-boat torpedoes.

HMS Seal (N37)

HMS Seal was one of six ships of the Grampus-class mine-laying submarines of the Royal Navy. She served in the Second World War and was captured by the Kriegsmarine and taken into German service as UB. She was the only submarine the Germans captured at sea during World War II. Her capture allowed the Germans to correct a critical fault in their U-boat torpedoes.