Ukraine has increased attacks on Russian energy infrastructure in bid to disrupt financing of its war.

The Ukrainian military reported that it has struck a Russian ⁠warship and ‌a drilling rig in the Black Sea.

Kyiv’s drone forces ⁠commander Robert Brovdi said on Monday that the attack targeted ⁠the Admiral Makarov missile carrier in ⁠the port of Novorossiysk, which is Russia’s largest oil exporting outlet on the Black Sea. Ukraine has increased its attacks on Russian energy infrastructure in a bid to disrupt export revenues that feed into Moscow’s war chest.

Russian authorities said at least eight people, including two children, were injured in Novorossiysk, without specifying whether the port was struck.

Videos posted on Telegram and verified by Al Jazeera’s verification unit showed a fire at one of the oil port’s docks in the city.

Novorossiysk’s Mayor Andrei Kravchenko said debris from drones had fallen on two locations in the city, including a residential area.

Russia’s military said in the early morning that air defence units had downed 148 Ukrainian drones over a three-hour period. It added that officials said emergency crews were restoring power to nearly half a million households in ⁠outages linked to air attacks.

The area of the port of Novorossiysk is also a location for the Caspian Pipeline Consortium’s terminal, which exports oil from Kazakhstan and whose shareholders include US majors such as Chevron and ExxonMobil.

Ukraine has significantly intensified attacks on Russia’s energy facilities, including the largest oil exporting hubs ‌both on the Baltic and Black Seas, as it seeks to reduce Moscow’s revenues from the sales of oil, the lifeblood of its economy.

The Kremlin has attempted to boost its exports after US President Donald Trump gave it a temporary waiver from sanctions to ease supply constraints, as the US-Israeli war on Iran upends oil markets following the effective closure of the Strait of Hormuz.

Kyiv officials complain that Russia will use the additional revenue on new weapons to hit Ukraine harder.

The latest strikes come a day after Ukrainian drones struck Russia’s Baltic Sea port of Primorsk – one of Russia’s main oil exporting outlets – and the NORSI oil refinery in the central Nizhny Novgorod region.

Alexander Drozdenko, governor of Russia’s northwestern Leningrad region, said a fuel reservoir in the Primorsk port area leaked when it was hit by shrapnel.

Ukrainian drones also repeatedly struck ⁠Russia’s Baltic Sea port of Ust-Luga last month, damaging several buildings in the sprawling ⁠complex of oil-processing facilities and export terminals.

Meanwhile, in Ukraine, a Russian overnight drone attack on the southern port city of Odesa on Monday killed two women and a toddler, authorities said.

Ukrainian President Volodymyr Zelenskyy said in a post on X that 16 people were wounded, including a pregnant woman and two children.

Russia’s overnight strikes also hit energy infrastructure in the Chernihiv, Sumy, Kharkiv and Dnipro regions, Zelenskyy said.

More than 300,000 households were without electricity in the northern Chernihiv region after distribution facilities were damaged in attacks, according to the regional power utility.

The Ukrainian leader said that over the past week, Russia launched at Ukraine more than 2,800 attack drones, nearly 1,350 powerful glide bombs and more than 40 missiles of various types.