When I was on vacation in the UK in 1998 I took a series of shots from a tour boat in Plymouth harbour. The guide didn't give out any ship's names and I wasn't in a position to write them down anyway. I was wondering if anyone could help me ID these ships either in class or name so I can mark the photographs. My knowledge of modern warships is rather pathetic. All help will be appreciated.
Here we have a prehistoric pre-digital photograph complete with ugly red light leak or developer screw-up...I'm not sure.

Type23 'Duke' class maybe?

Trafalgar or Swiftsure class submarine? I'm not sure.

I think the hull number is A138.

I'm guessing Broadsword class frigate on this one, although the forward turret seems to be missing.

And if anyone can tell me what the name of this odd-looking sculpture is, not too far from the Mayflower Steps, that's be good too.