songs of the sea

In several books in the series of O'Brian characters sing. In the Italian editions the songs are obviously translated, but these songs were really sung on ships? I know someone indicate some website where I can find the lyrics and maybe the music?

If officers were musically inclined they might sing any song of the period just as they would at home. Unlike shanties there is not necessarily anything nautical about them so any site with music of the period would be appropriate.

With patience and enthusiasm, I'm reading the series of O'Brian suit. Books are full of quotations of songs. After a diligent search I understood what songs it is, all folk songs and patriotic (Spanish Ladies, Roast Beef of Old England, Heart of Oak, Bay of Biscay-o, The Battle of the Nile ... and many others).
In research on the internet I found and then bought a CD that contains many of these songs.
The singer Jerry Bryant (with Starboard Mess) and the CD is called "Roast Beef of Old England".

http://www.cdbaby.com/cd/jerrybryant1