Black Sea Fleet warships train at night in Mediterranean Sea
Warships of the Black Sea Fleet operating in the far sea zone in the Mediterranean held a night training to practise using flashing signal lights instead of other communication means.
Frigates Admiral Grigorovich, Admiral Essen and small missile ship Orekhovo Zuyevo participated in the training.
The crews practised one of the elements of stealth navigation, in which the ships were in contact with each other in radio blackout.
Information was transmitted via flashing signal lights. The watch officers on duty received such signals, decoded them and responded using the same signal lights.