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  • Finnvågen

    With some calm weather in the forecast, we departed Eidsfjorden to cruise the dramatic west ...

  • Eidsfjorden

    Eidsfjorden lies along the south side of Langøya in the Vesterålen islands. From ...

  • Stokmarknes

    In 1893, Norwegian ship captain Richard With founded the Hurtigruten coastal ferry service in ...

  • Trollfjord

    Spectacular Trollfjord is 1.5 miles long and only 100m wide at the narrowest point. The fjord ...

  • Svolvær

    Svolvær, with a population of over 4,500, is the largest city in the Lofoten archipelago ...

  • Reine

    Reine, north of the Arctic Circle in the Lofoten islands, was recently voted the most scenic ...

  • Værøy

    The natural beauty of Norway’s remote Lofoten islands attract over a million visitors a ...

  • Røst

    Dirona crossed the Arctic Circle just north of Træna on an open-ocean run to the famed ...

  • Træna

    The dramatic Træna archipelago lies just four miles south of the Arctic Circle. Within the ...

  • Torghatten

    Torghatten is a famous landmark in Norway due the hole through right through the mountain. A ...

  • Stad

    Stad, a headland on Norway’s southwest coast, is one of 24 areas listed in the Norwegian ...

  • Nesahaugen

    Before arriving in Fjærland, we had planned to hike up to the Flatbrehytta Mountain Cabin, ...

  • Tender NMEA2000 System

    Frequent readers of this blog know we like NMEA2000 and have become very dependent upon ...

  • Jostedalsbreen

    Jostedalsbreen, at 188 sq miles (486 sq km), is the largest icecap in mainland Europe. The ...

  • Flåm

    Flåm is a small village at the head of Aurlandsfjrod, a branch off Sognefjord, the longest ...

  • Nærøyfjord

    Nærøyfjord was named a UNESCO World Heritage site in 2005 for being among the most ...

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General questions & comments
  1. Paul Wood says:

    Hello again,

    An interesting link for you today, called Phantom Islands, which I think you, and your fellow followers may enjoy. Its a maritime sonic atlas of islands which have been charted as fact but remain historically unproven, maritime folklore etc.

    So if you want to escape it all, here it is. http://www.andrewpekler.com/phantom-islands/

    PS: I’m thoroughly enjoying my armchair Norway trip 🙂

  2. Timothy Daleo says:

    I really like the picture with the Princess 20 M in front of the ice breaker. We do not see any of those euro yachts here in the US. They look like river yachts and have a sleek profile!

    • The princess is a fairly common boat in Europe and, as you said, they are not that frequently seen in the US. You will see the odd one and Viking did sell some into the US market under the Viking brand.

      • Timothy Daleo says:

        I had no idea that Viking made them here in the US. I searched and see they are expensive over here. Different topic, are you going nuts with the extended daylight or getting a lot more done on Dirona?

        • We run pretty much the same schedule as normal. Perhaps staying up a bit later sometimes and getting up a bit later but, generally, the 24×7 light isn’t leading to any changes. And, there are lots of upsides. It’s nice when on a long hike not to worry about making it back before nightfall.

  3. Rupert Eyre says:

    Hi have been following your trips for a couple of years now and find the quality and quantity of your reports very interesting and highly envious! Just a couple of points since you’ve recently been do in our neck of the UK (SW,Devon and Cornwall) the original Mayflower Steps are buried under the pub opposite their current position! And Hayling Island is near to Portsmouth not Plymouth some 250 mile apart approximately! Keep good wok best wishes and stay safe!p

    • Thanks for the Hayling Island note — we made that change. In the original note, we didn’t say anything about the Mayflower steps but you’re likely right on their location.

  4. Lars-Henrik K. Arvedsen says:

    I guess at some point you will head south and pass the south tip of Norway. The you could head SE toward the Baltic sea or yo could continue to the entrance of the Limfjord in Denmark at Thyborøn. The fjord crosses the peninsula into Kattegat towards the Baltic. Very beautiful scenery . 2 good breweries 🙂
    In Thyborøn you find this: https://www.seawarmuseum.dk/en

    • Both the museum and the breweries sounds excellent. Thanks for the local tips.

      Our current plan is to slowly work our way south and enjoy the Norwegian Fjords and, as the weather cools, work our way south to Amsterdam where we will winter. We’ll likely makes some stops in Denmark on our way south. Next year we plan to go to Sweden.

  5. Michael A says:

    James,
    How are you finding the costs in Norway? I have family that live there and have traveled there and found everything from food to accommodations to be extremely expensive. How do the cost for marine items/fuel compared to other countries who have traveled?

    Thanks

    -Michael

    • Generally, we agree. Food is quite expensive and dinning out is as well. Accommodations costs seem somewhat high but our read on that is less accurate since we have only booked the one room in Svalbard with little advance notice at a high occupancy time. Fuel is also right near the top end of world prices. Moorage is very inexpensive. Overall, Norway is pretty expensive when compared to most other world markets.

    • Trond Saetre says:

      Norway is known to be expencive, and it really is, compared to most countries. Especially anything related to cars and boats! About 60-70% of the gas/diesel price, is taxes. We have a saying that “1 boat money” equals 1000 Norwegian kroner. Makes it sound less expencive.
      Most marinas sell diesel fuel complying to the EN590 standard, which is required by the commonrail engines. But some marinas still sell MGO (Marine gas oil), which is cheaper, but has more sulfur.
      EN590 is without any bio fuel, while the diesel sold at regular gas stations has some bio fuel, I believe it is around 7%.
      In Sweden, diesel is around 50% more expencive than Norway. In Denmark roughly the same as Norway, or maybe a little higher. Don’t know any other European countries with higher fuel prices than Scandinavia.

      • The last fuel load we purchased in Tromso, Norway was MGO with 500 ppm sulfur. Fuels complying with EN590 are cleaner burning and somewhat better for the engine but, as Trond said, even more expensive.

  6. john worl says:

    Hi James & Jennifer. Had to laugh at that picture of Jennifer at Storsteinen viewing platform. Not too hard to figure out who is the tourist and who is the native to the land.

    John

  7. Larry says:

    Hello, James-

    I am interested in understanding a bit more about how you manage the balance between full time work and cruising. Would it be possible to contact you offline for some advice?

    Larry O’Keeefe
    N5012 Miss Miranda
    Seattle, WA

    • Sure absolutely:jrh@mvdirona.com.

      My strategy starts with maintaining a high bandwidth connection as close to 100% of the time as possible. I really depend on our KVH V7hst and we don’t make an effort to conserve.

  8. Aymeric says:

    Hi. I hope everything is going fine. I was just wondering if you could tell us your feeling of both world the boats you had. You had for ten years a bayliner and now 10 years a nordhavn. I know the nordhavn is more than double the price of a bayliner. But can you tell us the good side and dark side of both. In my mind nordhavn is one of the best machine on sea just like a fleming, marlow or selene… but i noticed that you had indeed a few things to change or repair on nordhavn like the cooling hoses under your engines that was not premium access or the shaft you had to change and so on… you made 4000h with the bayliner and the double with the nordhavn so what is your highlights difference ? ( except speed and range of course..)

    • As a Bayliner owner as we were, they really are completely different boats. The Bayliner was a very good value — in fact incredibly good value — but it can’t cross oceans with only 220 gallons of fuel whereas the Nordhavn can carry 1750 (6,650l). The Bayliner is fairly light at 15 tons vs the Nordhavn at 55 tons and the relative strength of the two boats appears roughly proportional to the weight. The Bayliners is close to 1/5 the price of the Nordhavn and comparatively lightly equipped but it allowed us to go on multi-week trips when we couldn’t have afforded a more expensive boat. The Nordhavn is a tank from a build quality and robustness perspective. The Bayliner is fairly lightly constructed.

      We loved the Bayliner in that we could afford it and it brought us to some amazing places but the Nordhavn is a fundamentally different boat and can go anywhere in the world. We don’t regret buying either boat but the reason we moved to the Nordahvn is we wanted a stronger boat, with more range, more capacity, more comfort and more open ocean safety.

      • Evan Bauman says:

        As an owner of a Bayliner 4788 (and previously a 4087), I completely agree with James. The Bayliners are sturdy boats. Much sturdier than what they are generally given credit. But even if I could figure out the fuel capacity issue, I would never cross an ocean in one. The weather is too unpredictable and the boat is not really built to take a serious ocean-level pounding. There’s no problem traveling in an ocean along a coast though. I’ve taken both my boats out into the Atlantic and crossed the Gulf of Mexico. Just need to wait for good weather.

        Nordhavns are rather rare here on the south Texas coast but there are three Selene trawlers on my dock ranging from 48 to 57ft. Two of the three have never left the dock in the past year except to go to the yard about a mile away for maintenance. That’s a real shame. In contrast, I’m away from the dock just about every week.

      • Aymeric says:

        And after 10 000hours, you know a nordhavn 52 better than anyone, what are the things you would like to improve, replace, delete, move, change…about reliability, comfort, cosmetic, trust and so on.. and does nordhavn company try to have info back from you ?

        • We aren’t alone in winding up the hours on our Nordhavn but, yes, Nordhavn does pick up on some of our suggestions and ideas. For example they have done a very nice power system design including some of what we have done. And they continue to help us with ideas when we want to make changes or tackle a challenging service item even though the boat is now more than 8 years old.

  9. John H says:

    James –
    would you say the Vengsoy is an ‘x-bow’ design?
    https://ulstein.com/innovations/x-bow

    How is Spitfire liking the additional hours (continuous) of daylight?

    • Yes, it does look a bit like an X-bow design but the ferry predates the invention of the X-bow by Ulstein. It does look like an early exploration of the principals behind the X-bow.

      Spitfire sleeps great during the day and he sleeps great during the night. 24×7 sun doesn’t slow him down a bit 🙂

  10. Jim Cave says:

    On November 12, 1944, 30 Lancasters from 9 and 617 squadrons attacked and sank the Tirpitz with 12,000 lb Tall Boy bombs near Hakoy, just a short distance from Tromso. The Tirpitz has since been scrapped and was an important source of low-background radiation steel (i.e. pre nuclear-era steel). Bomb craters are still visible on land. The ship is gone but it might be an interesting dinghy trip.

    Incidentally, If you visit Bergen on your way back south, you could visit the U-boat pens there. My father was the pilot of a 419 Squadron Lancaster that was part of the force to bomb the U-boat pens there (October 4, 1944). Dad died 24 years ago, but the U-boat pens remain, still used by the Norwegian navy for their own submarines. His 1,000 lb semi-armour piercing bombs were useless against the 10′ thick concrete roof.

    Jim

    https://www.bismarck-class.dk/tirpitz/miscellaneous/tirpitz_tromsoe_then_and_now/tirpitz_tromsoe_then_and_now.html

    • Vegard Rauo says:

      Dirona anchored very close to the Tirpitz wreck site when they arrived here a few days back, and there’s not much left to see other than perhaps the craters.

      And welcome to Tromsø, btw ! We finally got some sun today, summer has been cold and wet so far. I went by the harbour just now and saw Dirona, she looks great ! : )

      • Thanks for the historical notes Jim and Rauo.

        Its surprising that 1,000 lb semi-armour piercing didn’t level the U-boat pens. That’s a lot of explosive power. We’ll check it out when we get back south to Bergen.

        Rauo, if you feel like dropping by and looking around Dirona, drop me a note and we’ll set up a time.

  11. Paul Wood says:

    Svalbard…land of the midnight sun this time of year. Looking forward to the photo’s 🙂

    • Hey Paul. We’ve already got 24×7 sun this time of year in Tromso at 69.4 degrees north but Svalbard is another 550 miles closer to the pole up at 79 degrees. We’re really looking forward to it.

  12. Jamie Bush says:

    Thanks for sharing the continued journey as always.

    I was hoping you may pass through the Norwegian ship tunnel on your travels. Impatient for sure, I looked it up to see where it was in relation to where Dirona was and then it became evident as to why you didn’t try it – it isn’t built yet! At least according to this article. Looks interesting.

    https://www.cnbc.com/2017/04/06/norway-to-build-315-million-ship-tunnel-in-world-first.html

    • Yes, if that was open, we would ABSOLUTELY do a trip through it. That’s a really audacious engineering project. Unfortunately, construction hasn’t yet started but apparently funds have been allocated.

  13. Paul Wood says:

    James, going of your last comment that pump has got to have 4 or 5 chambers with diaphragms within them taking up the expansion. The pump will also pulse deliver hot water depending on the requirements. You could fit a separate expansion vessel 🙂

    • Paul, what you are describing is a very common marine freshwater pump design. I use several of these on Dirona — one on the pressure salt water system. However, for the house freshwater system, it’s a 24V centrifugal pump where the impeller runs on the pressure side, pulling water in through a check valve and running the pressure up to the desired 60+ PSI. It has a pressure sensor on board and when the water consumption stops, the system pumps up to max pressure and turns off. This stops the impeller but the input check valve stops reverse flow and the system stays at the design pressure. When water is consumed, the pressure drops and the impeller is turned on to again build the pressure back up. This pump design doesn’t pulse. It’s a single check valve system with no means to flow back to the fresh water tank and no means to relieve pressure.

      I suspect you are right that a separate expansion tank may be where I end up. Thanks,

  14. Paul Wood says:

    PS: Personally I wouldn’t fit an expansion vessel if Dirona wasn’t originally spec’d with one. In doing so you’d be sidestepping the fault, issue.

    This evening I had a chat with a family member who works in the hydraulic valve and pump industry, he assured me that system pumps that require no accumulator for thermal expansion are in use on marine pressurised water systems and have been commonplace for years!

    This makes me think, and gives credence to your extensive experience and knowledge about Dirona that the pump you have is one of these.

    How these pumps deal with thermal expansion is a mystery to me but, if it’s a microproccesor controlled flow sensor of some sort, and drawing just the right amount of water required from the potable tank for constant delivery to the outlets then feeding the back pressure caused when the outlet is turned off back into the potable tank in someway a one way venturi springs to mind? All being done silently and without generating water hammer, it becomes plausible that the sensor has gone out of spec or scaled up. This excess pressure which the system isn’t expecting is then slowly being discharged at the safety valve?

    This is just my hypothetical theory about how these pump’s operate, one which goes against my background regarding the need for adequate thermal expansion.

    • Peter Charles says:

      Hi James – have been following Dirona’s path for several years . The track NW of Andenes Friday June 8 has perplexed me. Can you enlighten me as to why the many changes of direction. Did the steering finally pack it in ?

      • Whale watching. That strange course you saw us weaving is us working our way around the sharp ledge of the continental shelf where the water depth goes from a hundred to 200 feet nearly straight down to 1500 feet or more. It’s a favorite place for the commercial fishery since fish tend to feed in this area. And these same characteristics attract squid which attract the whales that feed on them. Whale watching trips are popular here. We did see a few whales but they seem to be fairly busy feeding and are only coming up for a quick breath before returning to work. Perhaps they are diving deep for food but, whatever the reason, there was no frolicking at the surface, just a quick blow with the whale barely visible and then back under. There really wasn’t all that much to see and we didn’t end up with any interesting pictures from this expedition.

    • Paul, I went through the pump manual this morning since this theory sounds the most likely to all of us. However, there is check valve in the inlet of the pump that prevents any flow back into the freshwater tank. It appears that once water is forced into the pressure system, it’s staying there and the only exits are consumption points and the T&P valve. If there isn’t an accumulator in the system, I think there should be :-).

      Thanks for the advice.

  15. Stephen says:

    Hi James, give the (free) predictwind app a try. It gives you a direct comparison of the gfs and ecmwf forecasts, plus a couple of other models. The graphics are nice too. Just watch out for the file update times to make sure you are looking at the latest forecast. All the best, Stephen

    • I did use PredictWind a bit prior to and during the last Atlantic crossing so I’m somewhat familiar with the app. I hadn’t considered them for coastal weather reporting and we’re pretty happy with Windy but another source is almost always worth consulting. Thanks Stephen.

  16. Steven Coleman says:

    Insulation and secure mounting will probably solve your problem with contactor hum however if it doesn’t. It’s probably rust on the armature or “pole” disassembly and cleaning deals with that. Chattering is a broken or shorted shading coil.

    • Thanks for the additional suggestions Steve. I’ll go with insulated and secure and see how it goes. I do have a spare so, if needed, I can take it down but it’s a high quality Schneider relay so it’s probably fine.

      A question for you Steve: my hot water tank T&P valve was changed 6 months back because it leaked. The new one dumps water on heat cycles. I would think the plastic lines throughout the system should be able to absorb pressure changes but the T&P valve is pushing out water on heat cycles. When running the engine it’ll get quite hot (around 160F) and it normally runs in the 120F to 135F range when electrically heating. I suppose the new valve could be faulty but it’s definitely pushing out water. There is a plastic soft drink container below it and it’ll fill in a week or two. Any ideas or suggestions?

      • Paul Wood says:

        Regarding the T&P valve. I presume it’s a pressurised system, if so, check the expansion vessel air pressure with a tyre pressure gauge. Usually these were schrader valves on the gear I used to work on. You need to drop the pressure down to zero and ensure the temperature in the system is cold.

        The required pressure may be stamped somewhere close by, but as a general guide…

        The water pressure in a hydronic boiler shouldn’t be over 12- to 15-psi. It should have only enough pressure to raise the water a few feet above the top of the highest point in the piping system. A 12-psi setting will lift water 28′ above the fill valve. A 15-psi setting will lift the water to 34′.

        Low pressure or lack of, can cause valves to weep, discharge due to overheating and lack of resistance.

        If I’m on the wrong tack here, please ignore.

        • Thanks for the ideas Paul. I agree that most boats run relatively low pressure water pumps and many also have an air pressurized expansion tank. However, Dirona has neither. We don’t have an expansion tank and we run close to home water pressures. We’re using a Headhunter Xcalibur XRS-124 which, at the low current setting, still runs up to 50 PSI.

          Our hydraunic boiler even lower than the 15 PSI you’ve seen — ours runs down around 7 PSI on the coolant loop and this is independent of house water system so it won’t influence the pressure in house water supply.

          Thanks for the suggestions Paul.

          • Paul Wood says:

            I concur with Steven’s comment. I used to change the Schrader valves on expansion vessels (aka as accumulators / bladders in the USA) as a routine service item. If water leaks out when the Schrader valve cap is removed, the vessel is knackered and will need to be replaced. I’ve since Googled that Headhunter Xcalibur XRS 124 and the company provide a YouTube tune-up for the pump, which you may find interesting.

            https://youtu.be/DNT8hBoN1Xw

            • Thanks for your suggestions Paul. It certainly seems like an expansion tank would be required but I know the boat pretty well and it would very hard to hide an expansion tank and have me not find it. I’m pretty sure there isn’t an expansion tank on Dirona.

              • paul Wood says:

                Hmm. I’ve been going through my mental archives and giving this issue of yours some further thought – in my working career I have worked on pretty much everything from domestic to industrial installations both sealed (pressurised) and open vented – installed, commissioned full systems with expansion vessels in all manner of sizes from them being as small as an orange to the size of that Twizzy car you posted up.

                Thing is, I’ve been retired 20 year’s now so I’m out of the loop in advances in technology and system design etc. However, in my time there’s been some faults that I have discovered that can cause safety pressure valves to discharge, despite the expansion vessel proving to be in good condition and having the correct PSI for the system!

                I believe you when you say you cant find any form of vessel:) The first place to check for a vessel is inside the actual boiler (water heater) casing. Now, given my mental picture of Dirona’s overall size, I would imagine this vessel to be sized in comparison to lets say a gallon of oil container and could be a round flat tank or the size of a washing up liquid bottle.

                You say Dirona’s now 8 years old, so things are beginning to wear out, and up to now has been running and operating to within spec! Ruling out the things Steven has already mentioned like the temperature control thermostats not causing the system to overheat and the replacement valve possibly being faulty. We’ll assume for now taht hese are all in good working order.

                Here’s a list of things that I’ve discovered being the guy sent to kill problem jobs that’ve had serious money already spent on them with no resolution of the issue.

                1: The humble shower mixer valve found to be passing water from the cold side into the hot side when not in use, causing it to over pressurise the system and trickle discharge on the safety valve.

                This has happened on the thermostaic cartridge and bar type of mixer valve.

                2: Wash basin mixer taps, especially those with hoses for washing vegtables etc are prone to cause the same as number one.

                3: Washing machine (laundry machine) solenoids controlling the flow of water into the machine passing water through the block when off. Quite rare that one, but it was in inferior quality machine and no longer on sale in the UK.

                4: Calorifer (water to water heat exchanger) with a minute hole in it caused by cathodic corrision. A manufacturing defect which the company wouldnt admit liability for but, the replacement I fitted was a completey different design and spec. This caused water that should never meet, to meet, and gradually over presurised the sytem when in use (thermal expansion) with a resulting dsicharge.

                5: Filling loop passing water. A simple one to fix and test, just disconnect the filling hose.

                The others, like the mixer valves etc, if these have service isolating valves, which they usually do, just turn them off one-by-one and monitor the situtaion.

                A bit long winded James but these are actual events and things worth checking but, 99 times out of a 100 its simply low pressure in the vessel 🙂

                Hope this helps in some small way,

                • Thanks for the useful list of problems you have seen Paul. Many of your examples include leaks between the hot side and cold side via mixing valves, mixing taps, washing machines, etc. In looking at the system in Dirona. We have what looks to me to be a single closed system where the cold water connects to the bottom of the water heater and everything after the water heater is hot and everything before it is cold. But, there is no valve that I can find on the boat or in manufacturer manuals. The system is 100% open with water entering the system through a one way valve in the bottom of the water pump, and leaving through taps or consumption valves. Between those two points, I can’t find any accumulators nor can I find any way to relieve pressure of water expansion and there doesn’t seem to be any valve between hot and cold. In a system like this, I don’t think I can have any of the failure modes you outline below but I appreciate the ideas.

      • Steven Coleman says:

        I am assuming two things one is the water never gets hot enough to trip the thermal on the relief the temperature would be stamped on the valve tag. The other is it the valve seals drip tight when not in the heating cycle.

        That being the case all hot water systems have thermal expansion devices installed. Either in the form of multiple air chambers at the point of use which can be covered up and hard to find or, a simple bladder expansion tank which is now the most common method.

        It sounds to me like you have lost thermal expansion ability either through the individual devices filling completely with water, or loss of air charge on top of the tank bladder.

        If you have a tank you can drain the system enough to inject 6-12 psig into the fitting on top of the tank. If you have no tank you can completely drain the domestic hot water system so air will move to the individual devices on refill.

        In either case it means you have a slow leak either in the tank or one of the individual devices.

        • Steven Coleman says:

          Reading through other remarks and your reply, if you never had a problem with the old relief valve until it failed there is a tank or multiple air chambers installed somewhere you just haven’t found them. PEX piping does not do good as an expansion device and thermal expansion on hot water is the most common cause for failure. The most common air chambers used with PEX look like a very large CO2 rifle or pistol canister and while they could be mounted many places they are normally near the point of water use.

          If none were installed I really can’t imagine why it wouldn’t have been apparent when Dirona was new.

          It is within the realm of possibility the new relief is defective however I see exactly what you describe quite frequently and 99 times out of 100 it’s lack of thermal expansion capacity.

          The other time it’s the wrong valve for the application.

          • Steven Coleman says:

            I suppose there is another possibility since I’m not familiar with the potable water system on Dirona. While I still believe what you describe is a lack of thermal expansion capability, homes until around the mid to late 1970’s depending on region did not require expansion tanks on hot water because they used the actual city main for thermal expansion. After modifications to the Federal Water Pollution Control Act water purveyors began installing swing check valves in all branch lines to prevent back flow situations which then required thermal expansion be dealt with by the building owner. While I am assuming your system has what I would consider the normal foot valves and swing checks, maybe not. It could very well be that your system is designed to use the potable water tank for thermal expansion. That would be the only logical reason I can think of for lack of a expansion tank on Dirona and being self contained, there would be no regulation or law I can think of preventing the practice. I’d go over your system drawings and look for possible restriction points there.

            • Nordhavn does an unusually good job on getting the details into their owners manuals and, if there is an expansion tank, they don’t mention it. After 8 years on the boat, I’ve seen most nooks and crannies and I think it would be hard to hide an expansion tank that I’ve never seen. As much as the logic makes sense that I would need an expansion tank, I’m 99% sure I don’t have one. It would seem like I would need an expansion tank unless there is some other form of pressure relief valve allowing flow back to the water tank as the water is heated. I don’t think the Headhunter Xcalibur XRS-124 will let it flow back to the tanks so there is essentially nowhere for the expanding water to go.

              It’s possible I do have an expansion tank and just haven’t seen it. One solution is to just put an expansion tank on the system — based upon all you have said, it would seem like a functioning expansion tank would solve the problem.

              • Steven Coleman says:

                I do believe a functioning expansion capability would solve your immediate problem. It was also silly for me to even suggest with as much work as you have done on Dirona, that if there was an expansion tank installed that you wouldn’t have seen it.

                Since you’ve not had constant problems with the relief or broken PEX flitting on the hot water thermal expansion had to be designed into the system. That leaves the potable water tank as the only possibility I can think of.

                I couldn’t find anything in the way of drawings on the internet but I did find a picture of a Torrid installation on a Nordhavn that showed an adjustable 3 way valve near the heater that while the picture wasn’t good enough for me to identify the purpose, it didn’t have a sensing bulb leading me to believe it’s not there for convention mixing of water for temperature.

                Installation of an expansion tank while not hard or expensive would require room I’m sure you’d rather not lose.

                If you have good drawings of the potable water system I would start there first and try to identify what could have changed. Or it sounds like Nordhavn has excellent tech support, I’d probably talk with them and see how they intended to do it.

                • Steven Coleman says:

                  I was reading about your freshwater pump. I’m leaning toward were Paul was going in his comments and it may be worth looking hard there. It could be the sensor driving pressure that has gone off or, when you installed the new relief valve or anodes the system simply over-filled. Over filling is easy to check if your relief is piped in a SAFE direction. The next time you catch it in a heating cycle with the engine running as that is when it is the hottest, manually trip the relief holding it wide open for a couple of seconds. When you let it go it should close drip free and if the system was over-filled be the end of the problem. If the relief was leaking while heating in the electric mode, you could use the same process and if it deals with it, repeat when the engine was running.

                  If the relief is sealing drip free and only leaks during the heating cycle I don’t suspect the relief valve and would look harder at the pump and whatever sensors tell it to maintain pressures. The spec. sheet I read was short and to the point but I believe it indicated you can change the output settings at the pump. If the relief continues to leak on heating after tripping the relief my next step would be to lower the pump output. If that solves the problem, it’s probably a sensor going out or needing to be cleaned or another part you might be needing to order down the line.

                  • Steven Coleman says:

                    Since you’ve (more likely than not) used hot water since the relief and anode change the chances that the system is over filled are extremely slim. The key is whether or not the relief seals when not in the heat cycle for determining where to go next and it would be nice if you had pressure gauges on your freshwater supply.

                    • Steve, the challenge to chasing down the leak is that it’s super slight. I dump it into a plastic soft drink bottle and it’ll half fill in a week. Some days it doesn’t leak at all and other days a bit but never much. I’ve never caught it relieving but the bottle slowly fills.

                      You are right that a pressure sensor on the water system would be a very nice addition and it would help answer this question quickly. I’m leaning towards buying an accumulator and putting a pressure sensor in at the same time. Thanks for your thoughts as always.

                • Steve, the three-way valve that you saw is possibly an electrically controled valve that select water from the Everhot (the water heater in the hydronic heating system) and the A/C powered water heater. On Dirona, we take from the hydronic heater when it’s running and from the A/C heater when it’s not.

                  The system appears to have 1 inlet at the inlet to the water pump from the water tank. And, it has hot and cold outlets all over the boat. In between there are no valves and so the system will have a single pressure throughout the full system. The pump has a spring loaded check valve at the inlet so it won’t relieve pressure. It appears the only way to get pressure out of the system is the T&P valve. I can’t find any air pockets or designed accumulators. The Torrid MV20 hot water tank appears to have the outlet a few inches down from the top so it could form it’s only accumulator but the Torrid manual cautions on not turnning the outlet fitting to ensure all air is out of the tank which sort of implies they don’t intend to act as an accumulator.

                  Nordhavn support is excellent so, as recommended, I’ll ask them. Failing that, I’ll probably install an accumulator or try another T&P valve. Thanks for the help with this.

  17. Aymeric says:

    Hello both of you. first, forgive my mistakes, English is not my mother tung.
    As i am in my sofa since 4 weeks now after a back surgery, i found you on youtube and after your blog. I must tell that your way to share your boat adventure with us is really amazing!!! What i love is your technical report on the side that most magazine doesn’t show or explain. My favorite mag is motorboat&yachting which i receive every month and they should let you write a couple of pages each month in it! they make good reports on refits or used boat but a step back from you.
    I love your nordhavn and the way you improved it but when i discovered that you had a bayliner before, it made me something…
    With my father we have a 3988 bought new in 97 with the 330 cummins so your articles on your 4087 spoke to me !
    As you are in Europe and if you pass by Nieuwpoort Belgium i’ll be glad to have you on board.
    Thank’s for sharing your dream, it makes me dream also.
    Be safe.
    Aymeric.

  18. Jacques Vuye says:

    Have you noticed that the Finnamrken had a variable pitch propeller?
    And that it could be set to a 0° pitch ?
    Why would that be needed?
    Unlike an airplane, I don’t see the direct benefit of feathering a boat’s prop, except of course when towed…?
    I’d speculate that the prop could then be used as a sort of a paddle wheel , working a bit like a stern thruster?

    • Good observation Jacques. The Finnamrken is capable of zero pitch operation.

      Variable pitch equipped boats often don’t have a reverse and just pitch the prop the other way so there is a neutral pitch as a consequence of having both a forward and reverse pitch capability. And, a common operating mode for variable pitch equipped vessels to to put the boat in gear before leaving the dock with the pitch neutral. Then the engine is brought up to a speed appropriate for maneuvering prior to getting underway. The boat is just sitting there at zero pitch. Then the helmsman can dial in some reverse pitch to pull away from the doc, and then switch to forward pitch to continue to pull away from the dock. It’s possible to set RPM and leave it alone and run the boat on pitch but it’s better to adjust engine RPM to that needed for the desired speed and then add pitch to appropriately load the engine.

      Fixed pitch boats have the correct pitch at full rated RPM and are actually under-pitched at all other speed. Since most boats seldom run at full rated RPM, most boats run under-propped most of the time. Variable pitch props allow a knowledgeable operator to always have the correct pitch for a given load.

      • Trond Sætre says:

        This is exactly how I was thought to operate boats with variable pitch propellers.
        The school vessel I did my practice for my master’s license, was an old ice breaker tug, with twin main engines connected through one gearbox to a 6ft single variable pitch propeller. The stern pulled the same direction regardless of selected prop pitch.
        We set the appropriate rpm, and the rest was done by adjusting the pitch.
        Worked very well.

  19. Jan Martin Hodne says:

    Hello. On the way south you should go by Stamsund in lofoten and Kjerringøy just north of Bodø

  20. Paul Wood says:

    5/30/2018: At 900ft (275m) up, we could see climbers scaling Svolværgeita (circled in red at bottom right—click image for larger view). I showed this photo to the domestic authority (my wife) who said, “you’ll be going on your own.” She gets all panicky stood on a dining room chair! 😀

    • One of the places we ended up backing out of on the way down was a fraction of the steepness of the one in the picture but, at least for me, working near a steep edge without ropes is even more scary than even a sheer face with ropes.

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