der gesunkene Ozeandampfer
Translated from German: The sunken Ocean liner
This is a vintage, 1912 real photo unused postcard with people on the deck!
I found out this photo was taken during a trial run in the Belfast Lough.
Belfast Lough is a large, natural intertidal sea lough at the mouth of the River Lagan on the east coast of Northern Ireland.
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Here is a close up of the deck..