What a difference a day makes

Look at that blue sky!
Shot of Sydney Harbour looking across Chowder Bay towards the city.
This parkland area used to be a Naval base and was opened to the public in 2000, it has has great views across the harbour and out to the ocean.

I have no idea what type of Naval ship this or why it is here...a mystery


Update, no longer a mystery the eagle eyed SimonC (see below)has solved the case


The Spanish Armada Ship Cantabria