Fabulous to read that other folkies love Patrick O'Brian as much as I do - I've nearly got the whole set, and re-reading them is very rewarding. I think that the moment after the 'Waakhamzied' is sunk is one of the most powerful in the entire series.
I must say that Hornblower doesn't come within a country mile of Aubrey. I remember my idignation when I first heard of Patrick O'Brian ( or Patrick Russ, as his real name was)and how he was 'better' than Hornblower - rubbish I snorted. Within half a hour of picking up 'Master and Commander' I was not only convinced, but aware that my life was about to be significantly enrichmed!