Re: boats Constanta (Romania) - Jaffa (Palestine) #romania
A Google search found that a publication called
"The Palestine Bulletin"
(Available online: 12 January 1925 - 30 December 1932)
had listings of ships. It is searchable online, and browseable, at:
It appears that Constanta is also referred to as Constanza (as it was known in Italian.)
There are listings of movements of ships, arrival of immigrants, and advertisements that show ships and the ports they visit.
Hope this helps,