Ukrainian forces have damaged a russian military icebreaker in the Baltic Sea port of vyborg amid a mass overnight attack, the General Staff reported on March 25.

The attack is the first known successful strike on russian military ship in the Baltic Sea, almost 1,000 kilometers from Ukrainian territory.

https://kyivindependent.com/russian-military-icebreaker-damaged-in-unprecedented-baltic-sea-drone-strike-ukraine-claims/