The Russian Federation can carry weapons in the Black Sea on civilian vessels - isw
Turkey has been using the same Montre Convention and from February 28, 2022 and does not allow Russian warships to pass through the Bosphorus and Dardanelles straits. According to Article 19 of the Convention, "warships belonging to the fighting countries should not . . . pass through the straits. " But, according to some reports, Russia relied on civilian vessels and bypassing the Montre Convention transports military equipment through the straits.
The United Kingdom and Norway will lead a coalition aimed at assisting the Navy of Ukraine. On December 11, it was stated that Ukraine will receive support in the near future and in the long run so that the Ukrainian Navy is better interacted with NATO forces. The Norway Ministry of Defense reported that the Maritime Coalition is one of several similar ones, which were discussed at the recent meeting of the contact group on Ukraine on November 22.