The Russian Navy Code of Signals is a collection of flaghoist signals, which is used together with semaphore alphabet for the transmission of information between the ships of the Russian Navy and also with the shore.
For communication with foreign or civilian vessels the International Code of Signals is used.
[1] The Russian Navy Code of Signals originates from a similar code of signals used by the Imperial Russian Navy.
It was used by the Soviet Navy and with mostly insignificant changes remains in use by the Naval fleet of the Russian Federation.
Now that the Russian Federation is again using the old imperial jack, a new flag design is used for the third substitute.