On 23 march Ukraine said it had struck a Russian military transport vessel docked in the Azov Sea near the port city of Mariupol, a month into the Russian raid.

“The large Orsk boat of the Black Sea Fleet has been demolished in the port of Berdyansk where the control was taken by Russia,” the Ukrainian navy wrote on Twitter.

Russia’s defence ministry did not give an immediate response to the claim and AFP (Agence France-Presse) couldn’t single-handedly confirm the strikes.

TASS reported that the vessel was able to carry up to 1500 tonnes of weight.

The attack  come from the Ukrainians using secret United States weapons made for destroying boats

Berdyansk is positioned around 80 kilometres to the west of the strategic megacity of Mariupol, which has been encircled and heavily damaged by Russian forces.

A lot of civilians have escaped Mariupol but 100 000 people remain with no water and electricity. Kyiv says more than 2 500 people have been killed in the megacity since Russian President Vladimir Putin launched his raid on Ukraine one month ago. Russian forces have advanced further in southern Ukraine but only control Kherson, a city of around 200 000 people.