HMS Nelson, is there more than one?

[neves_rats]

Went on a patrol from my base in Wilhemshaven heading for DJ21 in mu trusty U53(July 1940), sank a couple of lone merchants en route but nothing too special, was about to order a little sun bathing time for the crew when a large enemy convoy is reported to be close by. I plotted intercept course and approached at periscope depth. Singled out a nice juicy large tanker and large merchant for a bit of special attention when the HMS Nelson suddenly gains recognition in the periscope, 36,000 tons for one ship, a little too good to pass over so fire a salvo of 4 torps at her but she continues to limp forward, persued her using the cover of a merchant to play hide and seek with the escorts until crew had reloaded and then fired 2 more torps into her from close range to finish her off. After a little difficulty evaded the escorts and completed mission, a little low on fuel for the return journey so called in at Vigo for a nice top up from the Bessel. Set course for Wilhelmshaven again once replenished, charting through known convoy routes. A little quiet for the first few days then suddenly reports of a large enemy convoy in our proximity, took me quite a while to get ahead of the convoy and get position for attack, but did so eventually, but imagine my surprise when after spotting many juicy targets once again, low and behold the HMS Nelson comes into my sights. Now forgive me if I am missing something here, but I am sure I sank that can to the depths of the Atlantic so how is there another one? Does anyone have an answer as I am puzzled, not puzzled enough to prevent me sending her to the bottom of the ocean again, only needed two torps this time, but puzzled all the same. evaded escorts and headed back on course but was rerouted to Lorient as new base, shall head there once out of torps or low on fuel whichever comes first. Any insight on this double sinking of HMS Nelson would be appreciated.