Boris Cherevko was born in 1917 in Sumy, Ukraine.

In June 1941, he served as a Mladshiy Leytenant and flight commander in the 9 IAP-ChF of the Black Sea Fleet.

On 10 August, Cherevko was tasked to escort the transport ship Kursk together with two other I-152s. The ship was evacuating people from Nikolayev.
When the ship left the Dneprovsk-Bug estuary it was attacked by three Do215s. The Soviet pilots attacked the German bombers and forced them to release their bombs prematurely. After a couple of attacks, Cherevko run out of ammunition and decided to ram one of the bombers, which crashed into the sea. Cherevko left his damaged fighter in parachute.
It is possible that this was a Ju 88 from 3./KG 51 flown by Leutnant Heinz Unrau, which was lost after colliding with a Soviet fighter while attacking a Soviet ship convoy between Odessa and Sevastopol. However, the date for this incident is 15 August, but there is no taran attacks on this date.

Cherevko was awarded the Order of the Red Banner for this combat.

He was killed in air combat on 9 May 1942.

At the time of his death, Cherevko was credited with 1 victory claimed while flying I-152s.

Claims:

Kill no.	Date	Time	Number	Type	Result	Plane type	Serial no.	Locality	Unit
	1941
1	10/08/41		1	Do215 (a)	Destroyed	I-152		Dneprovsk-Bug estuary	9 IAP-ChF

Biplane victories: 1 destroyed.
TOTAL: 1 destroyed.
(a) Claimed in a “taran” ramming attack. Possibly a Ju 88 from 3./KG 51 flown by Leutnant Heinz Unrau, which was lost after colliding with a Soviet fighter on 15 August.

Sources:
Aeroram
Barbarossa – The Air Battle: July-December 1941 – Christer Bergström, 2007, Chevron Publishing Limited, ISBN 978-1-85780-270-2
Stalin's Falcons - Tomas Polak and Christhoper Shores, 1999 Grub Street, London, ISBN 1-902304-01-2