As you may recall, in Panama, we had a catastrophic failure of our ARCO Zeus alternator regulator. The summary was that there was a mandatory software update, and the update caused the unit to malfunction and over voltage our main 12-volt electrical system. This caused our battery manager, in an effort to protect the batteries, to disconnect 12v power from the boat. Without the 12v power we lost radar, charts, GPS, lights, and various other systems. We also had a fire suppression system that shut down the main engine because it thought the loss of power was due to fire. Ouch. Fortunately, the failure happened someplace where we were not in danger, but that was mostly luck. Had we been someplace else when the boat suddenly stopped operating, we likely would have crashed into something. We also had enough emergency and backup systems that we were able to quickly gain control of the boat (we literally had a back up propulsion engine, as well as three other batteries banks to power the boat).

To continue cruising, the temporary solution was running the generator to power the batteries instead of using the main engine alternator while underway.

The company who installed the upgraded battery system, including the alternator regulator, was Weber Marine. Even though we in no way blame Weber for the situation, they covered replacing the ARCO Zeus as part of their warranty on their work.

David from Weber Marine flew in on Sunday, June 8 so that he could start work on Monday morning. When we’d scheduled this trip, Kosmos was supposed to already be back in the water and thus the A/C working. Having to do this project on the hard with no A/C was painful. Also, the yard hours were limited, so Eric and David couldn’t come in early to work during the coolest part of the day.