Crimean Blockade (1655)

Cossacks conducted a number of raids in late April and early May on Tatar and Ottoman territories to deter them.

Rumours later spread about more attacks that will come from Cossacks and Kalmyks on Crimea, which caused Khan to gather over 100,000 Tatar troops near Perekop and put out patrols to monitor any activity, withholding their planned campaign for defense.

Cossacks on 34 boats were to set out for campaign, led by Zaporozhian Ataman Dergun and Don commander Pavel Chesnochikhin.

[1] On September 14, when "the whether was great in autumn and there were frequent winds on the sea", Cossacks returned from their campaign to the Don region.

[1][4] Tatars themselves were indecisive in their actions and for a long time didn't risk going beyond Perekop due to the fear of Cossack and Kalmyk attacks.