Morse Code message on 12464 Khz at 1214 GMT - 22 December. This places the vessel in the Mediterranean.
RMP DE RK081 QSA IMI QTC K
RKO81 303 20 22 1600 303 BT SML FOR RJD38 BT
22121 99357 70041 41798 12705 10180 40266 5.000 70200 81001 22233 0170. ..501 327// 4///// 88000 80000 22017 AR RK081
From the second and third groups of the message.
35.7N 04.1W
35.7N 04.1W - Google Maps
The callsign that the vessel (RK081) is sending the message to is RMP. This is the Baltic Fleet HQ at Kaliningrad so it narrows down the likely candidates.
Global Frequency Database: Details - Kaliningrad, Russia RMP 4.079 MHz/4079 kHz - Radio Scanner Frequencies
Very hard to tie down the callsign to a specific ship. It could be anyone of the Baltic Fleet vessels in the Task Group? RK081 is possibly the Tanker Lena entering the Mediterranean first to link up with the Black Sea Fleet Frigate Ladny?
Baltic Sea Fleet elements of the Task Force.
Tanker Lena
Frigate Yaroslav Mudry
Frigate Neustrashimy
Russia: BF Frigate Yaroslav Mudry Joins Carrier Group >> Naval Today