'SM' (ii) was the designation of Allied convoys (together with a numerical and sometimes a literal suffix) plying the route from Naples, Italy, to Marseille, France, within the context of 'Dragoon' (i) and following operations, and as such reciprocals of the 'MS' (iii) series (August 1944/March 1945).

The first of these 38 convoys was SM.1A of 12/14 August 1944 with the 8,265-ton British Dewdale carrying 14 landing craft, 5,482-ton French Elorn, 784-ton British Empire Damsel, 846-ton British Empire Faun, 5,482-ton French Var, and Elise. The last was SM.32 of 21/23 March 1945 with four US merchant vessels in the form of the 7,191-ton Esek Hopkins, 7,176-ton Rachel Jackson, 7,181-ton US Robert H. Harrison and 7,176-ton Thomas Todd.