I was browsing around on the Royal Navy Submarine Museum in Gosport's web site. There is a page

[www.rnsubmus.co.uk]

giving a short description of british sub losses from 1904 to the present. Regarding th Sterlet the following text can be found.

HMS Sterlet

18 April 1940

Sunk in Skagerrak by German escort Vessel M75

On 8th April 1940 HMS Sterlet left for a patrol in the Skagerrak, Norway. Four days later she signalled that she had unsuccessfully attacked a Convoy of 3 Merchant ships and a Destroyer. The following day she was assigned a new patrol area and on the 18th torpedoed the German Gunnery Ship Brummer, causing serious damage. At once the German escorts counter attacked with repeated depth charge attacks. Their target never resurfaced.

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There seeem to be some kind of mixup here. The Brummer was sunk on 14.4.40. If the Sterlet was sunk in the counterattack she can't have been lost on 18.4.40. What gives?

Regards Jan-Olof