Very interesting observations, Manfred. If the P&J photo is indeed CAPE BORDA, I'd say the absence of the middle cargo gate is fatal. I can imagine a company adding one, but there's no reason they'd spend the money to take one away. But as you point out, the position of the gangway represents the steam version and not the motor units. As for the kingposts aft of #3, almost none of the CI-A's were originally fitted with them, but I believe late photos of all the Delta Line C1-A's show them, as if they're something Delta added. That sounds unusual, particular since many duplicate the style of the other masts, but the photos speak for themselves.

I'm convinced this is a steam C1-A, so if your photo of CAPE BORDA is the correct vessel, I can only assume this mystery photo shows a chartered vessel, not one of the DEL's.

I can see it is a C1A-boat from 2.ww. Only a clue for more investigation special to the marking of the funnel