Editor's note: The article was updated with additional information from the military intelligence agency.
Ukrainian forces destroyed a Russian military fast attack craft on May 6, Ukraine's military intelligence (HUR) reported.
The attack was reportedly carried out with a Magura V5 multi-purpose sea drone in occupied Crimea overnight.
The agency later identified the targeted Russian vessel as a Mangust-class patrol boat, also known under the designation Project 12150.
In recent months, Ukraine has intensified its attacks on occupied Crimea, targeting Russian military assets in and around the Black Sea.
Navy spokesperson Dmytro Pletenchuk earlier said that Russia had withdrawn nearly all its major ships from ports in occupied Crimea following successful Ukrainian strikes.
The Mangust-class vessels, worth around $3 million a piece, are used by Russia as multi-purpose high-speed crafts for patrolling, countering subversive operations, and search and rescue, the military intelligence agency said.
The boats are usually equipped with a remote-controlled weapon station with a 14.5 mm machine gun, as well as two AGS-17 grenade launchers, one DP-64 grenade launcher, and two Igla and Verba man-portable air-defense systems (MANPADS).
The combat mission was conducted by the "Group 13" unit of Ukraine's military intelligence in collaboration with the fundraising platform United24 in the Vuzka Bay in the Black Sea.
Ukraine previously destroyed several Russian ships with a Magura V5 multi-purpose sea drone, including a landing ship Caesar Kunikov, a Sergei Kotov patrol ship, high-speed Serna and Akula landing crafts, and a Tarantul-class Ivanovets missile corvette.
Ukrainian forces also partially damaged the Russian military ship Ivan Khurs using a Magura V5 drone.
On April 21, Ukraine's Navy struck the Kommuna ship in occupied Sevastopol. It was launched in 1915 and is the oldest ship still in service in the Russian Navy.
Sevastopol is home to Russia's Black Sea Fleet and is frequently targeted by Ukrainian missile and sea drone strikes.
Chris York
