Gro SS was a Norwegian cargo steamer built in 1917 by J. L. Thompson, England as the the British cargo steamer TENTERDEN SS for Furness Withy. In 1919 she was renamed GRO SS and owned by the OLSEN and I HYSING OLSEN, O GROLLE. O GROLLE & I HYSING OLDENS REDERI-A/S.
On the 7th September 1940 when on route from MONTREAL for MANCHESTER carrying 6321 tons of wheat she was torpedoed by German submarine U-47 and sunk. 11 crew missing from a total crew of 32.