The prewar ship Dodecanissos has numerous mentions in the newspapers of the 1920s, but I have been unable to figure out its background.
It appears to have been a former yacht of some 700 tons with a rather high speed of 16 knots!. No doubt that she was placed in "long trips".
Here is an ad from June 19, 1919
19190619 Dodekanissos.jpg
And one from July 23, 1919
19190723 Dodekan.jpg
Two more ads from August and October 1919
19190814 Dodekanissos.jpg
19191015a.jpg