Hi Evan,
Have a look at
Deepwater's Technical Library. There are 45 or so papers to peruse, mostly about offshore CP retrofit.
Without being too commercial, we do offer an offshore corrosion / CP course:
Offshore CP Course Outline but it requires a full class.
The best (most specific) textbook I know on the subject of offshore corrosion is:
"Marine Corrosion: Causes and Prevention" by Francis Laque ISBN:0-471-51745-3
I haven't read these, but:Chris Googan published a new one in 2022:
"Marine Corrosion and Cathodic Protection" ISBN: 103210581X
"Laque's Handbook of Marine Corrosion" also got an update in 2022. ISBN: 1119788838
Cheers
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Matthew Taylor
Head of S&T
Deepwater Corrosion Services
Houston TX
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