
A map of areas of the Black Sea that will be closed for exercises of the Russian Federation with missile and artillery fire as of 15:00 Kyiv time 11.02.2022. (Coordinates published on the website of the official international coordinator of NAVAREA III - Instituto Hidrográfico de la Marina, Cádiz, Spain, part of the Navy and the Spanish Ministry of Defense). Credit: blackseanews.com

Letter from the Department of Navigation and Oceanography of the Ministry of Defense of the Russian Federation on the abolition of the warning about the closure of the Sea of Azov. Photo via blackseanews.net
Earlier, on 9 February, Russia issued warnings about its closure of the Black and Azov Seas “for missile and artillery exercises,” starting from 21:00 UTC 13 February 2022 to 21:00 UTC 19 February 2022. No corridors were provided for the passage of merchant ships. The Ministry of Foreign Affairs of Ukraine issued a statement condemning the Russian plans, as maneuvers make navigation virtually impossible in the area.
How Ukraine can prevent an imminent Russian blockade of the Black & Azov Seas
The Sea of Azov was planned to be blocked from the coast of the occupied Crimea to the coast of Russia’s Krasnodar Krai, which meant a complete blockage of the movement of merchant ships to and from Berdyansk and Mariupol, the Ukrainian ports of Azov.

Russia’s initial plans to block parts of the Black Sea and the Sea of Azov for naval maneuvers on 13-19 February. Map: Black Sea News
In its north-western part, the Black Sea is to be blocked up to the sea border of Ukraine. Depths in the 12-mile zone of Ukraine, which remains free for navigation, are insufficient for the passage of large merchant ships, which effectively means the full blockade of shipping for the time of the announced navy maneuvers.
Despite the current cancelation of the full blockade of the Sea of Azov, Russia continues to effectively control the only passage from the Black Sea to the Azov Sea.
The US Embassy to Ukraine called the Russian upcoming blockade “Russia’s economic warfare against Ukraine”:
Russia's economic warfare against Ukraine continues. Under the pretext of military exercises, Russia restricts Ukraine's maritime sovereignty, limits freedom of navigation in the Black Sea/Sea of Azov, & impedes maritime traffic essential to Ukraine's economy.
— U.S. Embassy Kyiv (@USEmbassyKyiv) February 10, 2022
The Ukrainian online newspaper Depo.UA commented on the matter, saying
“And here the question arises: can such actions of Russia be regarded as preparation for an attack on Ukraine from the sea? Unfortunately, it is possible. After all, if in the context of a potential Russian invasion on land you can comfort yourselves with thoughts about the insufficiency of troops pulled to the Ukrainian border for a full-scale offensive, then at sea Russia has a full advantage, both in quantity and quality.”
Tags: Azov Sea, Black Sea, Blockade, Russian Navy