Hammer
Flag
Company
Country
N.V. Hammerstein's Scheepvaart Bedrijf Rotterdam Netherlands
Sovtorgflot (Soviet Commercial Fleet) USSR
Don-Kuban State River Steamship Co. USSR
White Sea - Onega Lake Steamship Co. USSR
Northern State River Steamship Co. USSR
Sukhona River Steamship Co. USSR
Russian Whale Factory Ships, Odessa
USSR
Amur State River Steamship Co. USSR
Technological Fleet Soviet Shipping Company USSR
Trade and Fishing Fleet Soviet Shipping Company USSR
Baltic Line, Leningrad (incorrect)
USSR
Sovtorgflot (incorrect) USSR
Black Sea-Azov Sea State Sea Steamship Co. USSR
Frachtcontor Junge & Co.

Poseidon Schiffahrt
Germany
Lena Goldfield Limited USSR
Hedwigshütte Anthracit Kohlen und Kokswerke J. Stevenson AG Germany
Kohlen Handelsgesellschaft GmbH Germany
Mülheimer Lagerhaus- und Speditions-Ges. mbH Germany
Overzeesche Vrachtvaart Mij Germany