Marinas and anodes - am I in trouble

[snowbird30ds]

Short runs are bad for an engine, it just draws fresh moisture in through the breather to condense once cooled, where I work we run light aircraft engines (aircooled) on a testbed and some after an hour and a half running at up to full power and temperature and you can pour the water out of the rocker covers afterwards.
If you can't get it up to temp don't run it.

 

[Plum]

I’ve put my boat in a marina for the winter connected to shore power. Heater on low, fridge on and I may run a dehumidifier.

Do I need to hang extra anodes or take other precautions or will I be ok?

Extra anodes provide no benefit unless your existing anodes are getting close to depleting. I hung extra anodes during the covid lockdowns as I knew my anodes were well due for replacement. The hanging anodes may have given some protection but they did not stop the accelerated corrosion of the depleted anode's studs once all the zinc had gone which may eventually have resulted in a sinking.

www.solocoastalsailing.co.uk

 

[LittleSister]

Most engine manufacturers say [run the engine] once per month

Do they? Do you have any examples?

My Bukh manuals have no mention of it in the general instructions. The detailed instructions for winterising also don't call for periodic running, and the instructions for de-winterising - titled 'Preparation of engine before launching' - clearly don't expect the engine to have run in the interim.

 

[syvictoria]

Some people find a dehumidifier works for them, but good ventilation can also work well.

And keep the bilges clean and dry.