According to information published by UK Navy on February 26, 2021, Royal Navy patrol ship HMS Mersey has tracked the movements of the surfaced Russian submarine B-237 Rostov-on-Don as it sailed through waters close to the UK.
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River-class offshore patrol vessel HMS Mersey and B-237 Rostov-on-Don Russian diesel-electric submarine Project 636.3 Varshavyanka (Picture source: UK Navy) |