Is this the same sub that has no weapons?
Well the Upholders were designed by the Brits to carry Harpoon missiles & Tigerfish torps(18 weapons in total)-it was pretty hyped up by all,including folks like Tom Clancy,though it had structural & systems integration problems from the start.The Indian navy was interested in this project in the early 80s for a brief period (To license manufacture these subs),but thankfully the Indian Navy bigwigs had the common sense to opt for the Russian Kilos & German Type-209,both of which have given more than satisfactory results to the IN.