HMS Dunraven was a Q-Ship of the Royal Navy during World War I.
On 8 August 1917, 130 miles southwest of Ushant in the Bay of Biscay, disguised as the collier Boverton and commanded by Gordon Campbell, VC, Dunraven spotted , commanded by Oberleutnant zur See Reinhold Saltzwedel. Saltzwedel believed the disguised ship was a merchant vessel. The U-boat submerged and closed with Dunraven before surfacing astern at 11:43 am and opening fire at long range. Dunraven made smoke and sent off a panic party (a small number of men who "abandon ship" during an attack to continue the impersonation of a merchant).
Shells began hitting Dunraven, detonating her depth charges and setting her stern afire. Her crew remained hidden letting the fires burn. Then a 4-inch (102 mm) gun and crew were blown away revealing Dunravens identity as a warship, and UC-71 submerged. A second "panic party" abandoned ship. Dunraven was hit by a torpedo. A third "panic party" went over the side, leaving on