The SS Indigirka (Russian: «Индиги́рка», IPA: [ɪnʲdʲɪˈɡʲirkə]) was an American built steamship that served in the Soviet Gulag system and transported prisoners.

Launched in 1919 as SS Lake Galva, it served under the names Ripon, Malsah and Commercial Quaker between 1920 and 1938, when it was renamed Indigirka.

[3] That seems to conflict with evidence that the ship was fully loaded when it departed on its final journey with less than 1,500 crew, passengers and prisoners, forcing Soviet authorities to leave behind many others who were supposed to have made the trip.

[citation needed] The Indigirka belonged to a fleet of steamships operated by Dalstroi to transport prisoners from Vladivostok, endpoint of the Transsiberian railway, to Magadan and Kolyma across the Sea of Okhotsk.

16 December, when the Japanese rescue team then opened the hull with acetylene torches, only 28 survivors (one of whom later died) were found among more than 700 dead prisoners.