I wonder about the date 1945, as this looks very like Lloyd Brasileiro's coastal ship AMAZONAS, which is listed as broken up in 1930. She was earlier Singlehust/Booth Line's MARA - there is a small drawing of that ship in Duncan Haws' "Merchant Fleets: Lamport & Holt and Booth" which matches closely.

Built 1883 by Palmer's of Jarrow, Newcastle (Yd 521)
1448grt
Built as LADY ST. GERMANS, she was MARA from 1892
In 1901 bought by Empreza de Navegação Gram Pará and renamed AMAZONAS
1907 transferred to Lloyd Brasileiro for coastal services, and broken up in 1930.

More detail here: http://www.tynebuiltships.co.uk/L-Ships/ladystgermans1884.html