To save everyone a click, the message, translated to English, is "AN ENGLISH CRUISER ARRIVED AT SEVASTOPOL ON THE ?4TH AN ALLIED SQUADRON FOLLOWS ON THE 26TH"

I was surprised to see that the message was sent on November 27, 1918. That's a few weeks after the war ended, and I won't have expected the German military to still be monitoring military activity in the Black Sea, given how far that is from Germany.