German coaster JOHN BLUHM (IMO 5177078) built at J.J. Sietas Schiffswerft, Hamburg-Neuenfelde, in 1957 (№ 430, Sietas type A), photo by Boman, J. Robert (1926 - 2002), copyright owned by Sjöhistoriska museet.
Boman, J. Robert / Sjöhistoriska museet
CC BY-SA 4.0
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