The Russian occupation authorities continue to step up security measures on the temporarily occupied Ukrainian peninsula of Crimea, the Ukrainian Naval Forces said in a Facebook post on July 20.
In particular, Russia is strengthening anti-sabotage and anti-aircraft defense measures on dangerous routes.
"It also violates the International Convention for the Safety of Life at Sea of 1974 (SOLAS) by turning off automatic identification systems (AIS) on civilian vessels in the water area."
Ukraine expects to receive longer-range weapons from Western partners before attacking Russia's Black Sea Fleet, Ukrainian Deputy Defense Minister Volodymyr Havrylov said on July 19.
According to Ukraine's General Staff, Russia has lost 15 ships and boats, including the Russian Black Sea Fleet flagship Moskva, since the beginning of the full-scale invasion of Ukraine.
The invaders are using their ships in the Black Sea to strike civilian targets in Ukraine and block grain exports.
Earlier Ukrainian military intelligence spokesman Vadym Skibitsky said that enemy military equipment in the Crimea and Russian Black Sea Fleet ships are among the main targets to be destroyed with the use of U.S. multiple launch rocket systems.