2002 LRV DI, cathodic protection anodes?

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I recently bought a 2002 LRV DI and since I do use it in the ocean, I was wondering if there are any sacrificial anodes installed from the factory to protect against corrosion and if so, where are they?

Also, if there isn't, would you recommend installing sacrificial anodes and if so, where would you install them and what type?

Thanks for the information.

Robert