Anodes - Where and how many?

[CurrentSea]

Was reading about anodes in the water heater and this got met thinking about where else there are anodes that may need replacing. Anyone want to help list them and where they can be found. I plan to look around my engine compartment tommorow to find the all. Here is what I know and think.

- Bravo 3 - I know where all these are.
- Water Heater - no idea, where do I look.
- Kohler Genny FWC - There is probably at lease one here? Where?
- Horizon FWC Engines - Is there any in here?
- Any others?

Thanks.