Source: Southern Regional Administration of the State Border Guard Service on Facebook
Word for word: "In the South, the 'combat birds' of the State Border Guard Service continue to diminish the offensive capabilities of the occupiers by destroying their watercraft. As a result of precise FPV drone deployment, the defenders set fire to a motorboat (of the Russians – ed.)."
Details: According to the border guards, after the UAV attack, the boat ignited and subsequently sank.