WATCH: Ukraine’s drones damage Russian warship at crucial Black Sea port

Ukraine's military drones Friday bombed a crucial Black Sea naval base in Novorossiysk, rendering a Russian warship seriously damaged, as President Volodymyr Zelensky continues to carry the war into Vladimir Putin’s camp as vowed.

The attack occurred overnight at a civilian port which was confirmed by the Russian Ministry of Defence — responsible for handling 2% of the global oil supply with grain exports.

After the Ukrainian assault by its naval drones, the port operations came to a temporary halt before the base resumed its activity, according to the Caspian Pipeline Consortium which operates an oil terminal.

According to a short statement from the Defence Ministry, the Ukrainian attack had been repelled in the waters outside the base and the two sea drones had been destroyed. It made no mention of any damage.

Reuters report suggested that the Olenegorsky Gornyak, a Russian Navy landing ship, had suffered a serious breach and could not conduct combat missions following what they said was a joint operation by the Ukrainian Navy and SBU intelligence service.

The report also indicated that a large Russian naval vessel had to be towed ashore because it could not move under its own power after being damaged.

The source was quoted as saying oil and grain loadings were still taking place at the port which resumed normal operations hours after the attack.

Andrei Kravchenko, a Novorossiysk city official, said on the Telegram app that the Olenegorsky Gornyak was one of two ships that had "instantly reacted" to fend off the Ukrainian attack.

Rising Russia-Ukrainian tensions

Russian social media users had reported hearing explosions and gunfire near Novorossiysk Friday morning.

"Tonight, the armed forces of Ukraine attempted to attack the Novorossiysk naval base with two unmanned sea boats," the Defence Ministry said in its statement.

"In the course of repelling the attack, the unmanned boats were visually detected and destroyed by fire from the standard weapons of the Russian ships guarding the outer waters of the naval base."

The Caspian Pipeline Consortium which loads oil onto tankers in Novorossiysk said its facilities had not been damaged and that oil loadings continued onto tankers which were already moored.

The port is one of the biggest in the Black Sea, and a major terminal for the export of oil and oil products. The Caspian Pipeline Consortium is the main exporter of Kazakh crude oil.

Exports of Russian and Kazakh oil from Novorossiysk average around 1.8 million barrels per day, or about 2% of global oil supply.

Britain's military intelligence service said last September that Russia's Black Sea Fleet had relocated some submarines from the Crimean port of Sevastopol to Novorossiysk, probably because of the increased threat of Ukrainian long-range strikes.

Tensions in and near the Black Sea have escalated since Russia last month withdrew from a deal allowing the safe export of grain from Ukrainian ports. Russian drones and missiles have since repeatedly struck Ukrainian port facilities and grain silos on or near the Black Sea.

Russia has also reported an uptick in attempted Ukrainian naval drone attacks on its own warships in the Black Sea.

The Russian Defence Ministry said on Friday that its forces had also repelled an attempted Ukrainian attack on Crimea, which it annexed from Ukraine in 2014, using at least 13 aeroplane-like drones. It said there were no casualties or damage.