Googling that Russian pilots name brings up a couple of interesting pages
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Interesting Russian anecdotes re the increased use of Bears during the war, how the Russians found some of the Belgrano dead, and the behaviour of the UK fleet towards the Russian spy ship.
If the translation is accurate, it indicates that the Bear teams jumped from flying 200 hours / year, to 100 hours in April alone
"the missions that lasted up to 15 hours without any alternate aerodromes, often having lost radio contact with their base, usually ending in a thousand feet or less near the vertical of the two British aircraft carriers"
Apparently there were six Bear missions to spy on the fleet