Richard, We had a Sea-Era head aboard our Krogen for four or five years. It was reliable and pretty bulletproof. However, it was noisy. My wife and I made a pact to never flush late at night. Eventually we swapped it out for a Raritan Elegance. It’s much, much quieter and a far superior toilet. It can be plumbed to use fresh water, sea water or both. Regards, Randy Pickelmann Sent from my iPad