SS Marietta E was a British cargo ship completed by William Hamilton & Co in Port Glasgow on the Firth of Clyde in June 1940.

[1] She had a single 520 NHP triple-expansion steam engine built by David Rowan and Company of Glasgow,[1] that drove a single screw.

[1] She was owned by Leith Hill Shipping Co Ltd and managed by Counties Ship Management Co Ltd of London[1] (CSM), both of which were offshoots of the Rethymnis & Kulukundis shipbroking company.

Early in 1943 she sailed from New York, bound for Alexandria in Egypt via Durban and Aden.

[2] At 0346 hrs on 4 March in the Indian Ocean east of East London, German submarine U-160 fired two torpedoes at the convoy, one of which sank the Marietta E killing four crew and one DEMS gunner.