SS MAININKI (THJF / OHEV, LR/IMO) Valmistunut/completed: 1891.2, Norge, Moss, Moss Jernstøberi & mek. Værksted. Shipyard no. 4.
400 dwt, 295 hp, 42.15 x 6.75 x 4.00 m.
1891.2: JØKUL, Brødr. Jacobsen m.fl., Haugesund. 1897: Axel Halleland, Haugesund. 1898: Steffen Staalesen m.fl., Haugesund. 1915: D/S A/S Jøkul (Thomas Smedsvig), Haugesund. 1916: D/S A/S Portagas (H. B. Arnesen), Kristiania. 1923: Bendik Mannes, Aakrehavn/Kopervik, Norge. 1924: JØKUL, Asgeir Pjetursson, Akureyri, Island. 1925: NONNI, same owners.
1928.4.28: MAININKI, homeport Rymättylä. Feliks Kotiranta, Rymättylä. 1935: mgrs Meritoimi O/Y, Turku. 1939.12.6: MAININKI, Suomen Moottorilaiva Oy (L. G. W. Boxberg, Lönnrootink. 45 A) Helsinki. 1940: homeport Helsinki. 1942: homeport Nagu. 1944.9: Stella Polaris operation. 1944.10.4: In Tornio harbour Röyttä when unloading Finnish army cargo sunk by German Luftwaffe Stuka bombing. Ship was carrying from Oulu 120 tons ammunition, coal for automobiles, and horses with outfits. II engineer Albin Linnankoski and deckboy Henrik Loman were killed.