SS Primrose Hill was a British CAM ship that saw action in World War II, armed with a catapult on her bow to launch a Hawker Sea Hurricane.

[5] Primrose Hill was CSM's second CAM ship, in effect replacing Michael E that had been torpedoed and sunk three months previously on her maiden voyage.

[1] Primrose Hill SS was a British Cargo Steamer of 7,628 tons built in 1941 by William Hamilton's & Co, Port Glasgow, Yard no 448 for Ruthi, Kuluku.

[3] The convoy dispersed, and at 2118 hrs on 29 October she was northwest of the Cape Verde Islands when UD-5, a submarine that the Kriegsmarine had captured from the Dutch Navy after the surrender of the Netherlands, fired two torpedoes at her.

[4] Primrose Hill remained afloat so at 2246 hrs UD-5 fired her 88 mm (3.5 in)[6] deck gun, hitting the steamship near her bridge.

[4] On the morning of 30 October the four lifeboats, keeping close together, set sail and steered eastwards for the Cape Verde Islands.

[4] On 3 November the remaining boats had been carried further west so they lowered sail and tried rowing, but found the wind and current too strong.

[4] On 6 November the survivors were just giving up hope of making headway against the current towards Cape Verde and were turning to sail with the current 1,500 miles (2,400 km) in the opposite direction to Brazil,[4] when after 1430 hrs the survivors sighted the Elder Dempster Lines cargo ship MV Sansu about 6 miles (9.7 km) away heading southwards.