Hi everyone,
We spent five nights in Marsden Cove, from Monday to Saturday last week. It was a miserable week weatherwise so nice to be in a marina. The marina stay gave us an opportunity to catch up with some friends, fill up water, fill diesel tanks from jerries, stretch our legs, enjoy hot showers and have our rig inspected.
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| Sunset in Opunga Bay |
The rig inspection was carried out by Independent Riggers. Their two guys were very professional and thorough. We often do our own rig inspection but once in a while it's good to have the job done by a pro. Happily no significant faults were found. We also got a few tips which was very helpful.
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| View from Marsden Cove |
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| Rig Inspection |
We also replaced our engine battery. This is a 300CCA (Cold Cranking Amps) lawn mower battery. We first changed to this smaller battery type in Deltaville, VA two years ago. Recently it has been cranking more slowly so it was time for replacement. During replacement we found its engine compartment wall-mounted battery box was splitting. We rotated it 180 degrees to remedy that too.
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| New Battery |
On Saturday we sailed 53nm N to Whangamumu. Escaping Whangarei Harbour was hard work with wind over tide conditions. Once out we had a fresh SW breeze gusting to 30 knots with occasional light showers. A great little shakedown which Zen Again loved. We were down to double-reefed main (= triple-reefed on a full sized main) and triple furled yankee.
Here are the usual screenshots...
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| Track |
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| Arrival |
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| Graphs |
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| Departing Whangarei |
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| Anchored in Whangamumu |
We stayed in Whangamumu for two nights with half a dozen different boats each night. It's a great anchorage. Nicki tried out her recently completed knitted pullover. Very warm!
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| Chilly in Whangamumu |
We'd had a full week of cloudy weather with little solar input. I knew the batteries were getting low but hadn't checked the individual battery Bluetooth status, relying on the Battery Monitor's state of charge reading. Turned out they were lower than indicated. After our first night in Whangamumu we were woken by the gas detector alarm. On inspection it wasn't alarming for gas. As I pondered the cause, still half asleep, I saw the voltage on a nearby USB charge drop from 12V to 6V then the lights went out! There was also a loud 'clunk' from the pedestal/table housing our batteries. Oops!
Each of our Lifeline LiFePo battery's internal BMS cuts itself off at 8V so we'd really given them a workout. The lights came back on when I started the engine using the entirely separate (and new) engine battery. The BMSs restore connection at 10V. This incident reminded me of the 'cliff' LiFePo batteries fall off when deeply discharged. Our battery monitor is good but the battery voltage needs to be monitored too. Here's a graph from our Lifeline battery manual. Unless very cold the 'cliff' is very steep...
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| Battery discharge graph |
That (Sunday) morning ran the engine for several hours to put a little energy in the batteries. On Monday we motor-sailed the 17nm to the Bay of Islands' Opunga Cove in very light winds. We motor-sailed partly to put more energy in the house batteries!
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| Anchored in Opunga Bay |
This morning (Tuesday) we swapped between our two 10kg GRP propane cylinders. The empty cylinder had lasted since mid-November, soon after arriving in NZ. Nearly four months. Using our inverter-driven 600W kettle adds a month to each 10kg of gas lifetime.
This afternoon we had a hull-cleaning swim. We were surprised to find the hull quite clean 10 days since our last clean, including 5 nights in Marsden Cove. The fouling here in NZ can be really bad. We expect to spend the rest of this week on anchor around the Bay. We expect to move into the Bay of Islands Marina in Opua for a few days next week.
Happily the batteries are charging well in this week's sun!
Trust all's well where you are!