This is actually the Naval Museum (TA reviewed). As well as British, it’s anti French, Russian, American, Japanese and Qing. Mind you, the British do get more than a few special mentions. If you’re a Brit and easily offended or embarrassed by British history don’t go. It’s in the same park as WeiYuan Fort (TA reviewed) The Opium War Museum (TA reviewed) is a completely different museum. It’s north-east of the Naval Museum and about half the distance from HuMen bus station as the Naval Museum in the ZhenKouCun district.

don't know whats different with optium war museum, anyway, that is worth for visit. esp for some collection related hong kong which is important history although that is one side point and i dont doubt for what it showed what it hidden but the photo, the map and the figure also worth for reading.