Wednesday, March 12, 2025 — We were up again early to get the boat ready to go to sea. A storm was coming in the next few days. As much as we liked this place, we’d had to make a decision between staying here longer than planned or leaving sooner than planned. We opted for sooner. We picked an anchorage ten hours away so we could do a day run.
We quickly got the dinghy up and all the loose things stowed. As soon as dawn broke (shortly before 0700), Eric turned on the engine. The stabilizers didn’t turn on. Eric troubleshooted and determined that the servo controller (main computer) was getting power.
Our new friends also decided to move on for the storm. Here they were leaving the anchorage as the sun rose.
Wednesday, March 5 — The weather forecast had changed for the worse, so we needed to either leave Jamaica sooner than planned or stay longer than planned. We opted for sooner, which meant we needed to get serious about boat projects and sightseeing.
After our morning routine of schoolwork and boat chores, Eric ran a bunch of tests to verify how the boat’s systems operate. After the voltage regulator problem he wanted to parallel in each of the battery banks to the house bank to make sure they each worked, which they did. He verified that the main engine shuts down without voltage from the house bank of batteries. He verified that if he shut the engine bank off, then shut off house bank, then the engine wouldn’t shut off. This confirmed his suspicion that the Seafire system was getting power from the engine bank in order to shut off the engine.
Ed had come by that morning and was being pushy about escorting us on a sightseeing trip. Knowing that we were running out of time, at 1500, we took him up on the offer. He said he was taking us to the Frenchman’s Cove and the Blue Lagoon. Ed walked us over to the gas station between the two main roads in town and we caught a taxi.
The taxi took the road that paralleled East Harbor. We headed southeast for about five miles. Shortly beyond East Harbor, the waterfront became all privately owned property. The buildings along the shore were mostly homes, with a few hotels, and was an interesting mix of old, new, small, large, low-end and high end.
This place is apparently a private home called Trident CastleThere were plenty of small homes, too. Continue reading →
Tuesday, February 25, continued… After bypassing the battery protect device, and having Zeus set to 60% max load (~100 amps at cruising RPM), it was time to do some testing. First, Eric ensured switching to emergency power would work. He turned off the house bank via the BMS (simulating what had happened earlier), and then initiated emergency power by paralleling in another battery bank. It worked. Then Eric simulated being on a passage. He turned the main engine on, revved up to 1750 RPMs, and had all underway systems on. He watched the power readings like a hawk. This is where it got a bit weird. Every 400 seconds the Zeus restarted itself. Charging went to zero; but it had restart delay, so it took about 30 seconds to start charging again.
In general, we use about 60 amps underway, and this was actually enough charging for us to do the passage. However, watching the Zeus reset over and over made Eric nervous. He ran the engine for almost two hours, checking and watching. Eric had to made a decision: try to make it to Jamaica with a questionable alternator regulator, or re-check-in to Panama and try to troubleshoot more. Since the weather windows here were few and far between, he did not want to give up this window.
Now that we were certain that emergency power via paralleling another battery bank, we knew we could utilize the generator and the secondary alternator to charge the batteries. If there was a problem with the Zeus again, Eric would switch to emergency power, restart the LiFePo battery system, and run the generator to continue operating Kosmos via the LiFePo battery bank. He wanted to keep the secondary alternator in reserve and the other battery banks in reserve, as well. He also wired the ignition trigger voltage to a breaker in the pilot house, so if things started to go awry with Zeus, he could shut it down easily.
Keith and Christi helped with the testing/rewiring. Once Eric was done, Keith did archery with his friends. We had dinner in the marina restaurant.
On Wednesday, we didn’t need to wake up until 0500 to do the last minute things before going to sea since Kosmos was still mostly ready to go. Eric was feeling confident that that if there was another issue with the Zeus, he could turn it off via the switch that he’d wired up yesterday.
We untied at about 0600. This morning was much gloomier than yesterday, which felt ominous. We passed through the channel from the marina into the bay at low RPM’s, just as we had yesterday. When we were far enough into the bay that we felt like we were safe from any potential obstacles, Eric revved up the engine. All worked fine.
We exited Limon Bay via the east entrance. The big ships only use the west entrance, so we’d anticipated less traffic. Here were two ships passing in the west entrance.
Note: Christi normally writes the blog posts, however, since this is a boat technical post, Eric has authored this one.
Tuesday, February 25: We rolled out of bed at 0400 and did all the last minute things we always do before going to sea. Our first inkling that something could be wrong came at about 0530, when I turned on the main engine to warm it up. Before we get into the details, here is some important background information:
While underway, electricity to charge the batteries for Kosmos is made from an alternator on the main engine. It is an important system, and having electricity from the main engine allows us to run all the boats systems without running the generator. While underway, the boat uses quite a bit of electricity for air circulation, navigation/radar, and all the usual loads (refrigeration, freezer, lights, Internet etc.).
The main engine alternator is externally regulated by a product from ARCO called Zeus. External regulation is a general practice for interfacing with Lithium Iron Phosphate (LiFePo) batteries, which was part of the upgrades made to Kosmos after we got back from the Sea of Cortez. Zeus has an app and can connect via Bluetooth for configuration and monitoring. Mainly, it can reduce the load on the alternator ensuring it does not overheat. The Zeus box has several sensor wires for temperature, RPM, voltage, ignition, regulator control, etc.
The sunrise on Tuesday, February 11 again looked like there was a fire in the sky that was giving off a lot of smoke.
Tuesday was another quiet day. We’ve found another downside to being right in front of the marina. In the morning, the marina mowed the lawn, and the wind blew grass clippings all over the boat. Eric determined that the wind generator was working well, so after he cleaned off the grass, he turned off the wind generator and brought the dinghy back onboard.
On Wednesday morning, Eric changed the wing engine fuel filter. It was easier than, but also messier than, anticipated. In the early afternoon, Eric led a D & D session with Keith and several of the kids in the marina.
In the evening, we went on a nature walk with Carlos, who works at the marina. His hobby is botany, and he does these nature walks as a side gig. Several people had recommended that we hire him, but up until now, he’d been booked solid with ARC boats. Now most of the ARC boats were gone and he had time for us.
Carlos had been a young teen when the US military left Panama (in 1999). His brother had been working at Ft. Sherman as a contractor. Carlos had tagged along with his brother and remembered what the base looked like back then.
He started the tour by explaining that during canal construction, there was a lot of excess dirt that the military utilized to create land. He said much of the flat area within Ft. Sherman, particularly near the edge of Limon Bay, was man-made, including this cove. While Carlos was talking, the resident lizard came out to say hi.
