What is the city of Portsmouth in England famous for?

Portsmouth is a coastal town in the south of England only connected to the mainland by three road bridges built over the sea. Portsmouth has a long and well documented history that is closely associated with the Royal Navy, who are headquartered there, and the sea faring exploits of the British have shaped the modern day culture we see there today. Ship building and Engineering industries are most prevalent in Portsmouth with the local "super" Hospital and University also being amongst the largest employers. It is also worth noting that the local football club is well supported by the community and is famous throughout the English Football Leagues for the passion and commitment shown by their fans - particularly when they travel for away fixtures.