Battle of Kotlin
Part of Russo-Swedish War (1656-1658)
Date 22 June [O.S. 1 August] 1656 Location Kotlin Island Result Russian victory
Belligerents
Sweden	Tsardom of Russia
Commanders and leaders
Irek Dalsfer (POW)	Pyotr Potemkin
Strength
3 galleys	15 strugs
Casualties and losses
1 galley and her entire crew	Unknown

The Battle of Kotlin (Russian: Бой у острова Котлин) There was a naval battle in the Gulf of Finland, As a result, the Swedes lost one ship and retreated.

In July 1656, Russian troops besieged the fortress of Notenburg, and a Swedish detachment tried to land in their rear. The Russian commander Pyotr Potemkin reacted quickly to this and ambushed the Swedes, capturing their commander and killing the entire detachment on the ship.^[1]

The battle is considered Russia's first naval victory.^[2]

• Veselago, F. (1871). Краткие сведения о русских морских сражениях за два столетия с 1656 по 1856 [Brief information about Russian naval battles over two centuries from 1656 to 1856] (in Russian).
• Grechanuk, N.; Dmitriev, V.; Kornienko, A. (1990). Дважды Краснознаменный балтийский флот [The Double Red Banner Baltic Fleet] (in Russian). ISBN 5-203-00245-2.
• Календарь побед русской армии: Морской бой у острова Котлин отряда Петра Потемкина и шведов и захват шведского корабля