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CarpeDiem

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Everything posted by CarpeDiem

  1. CarpeDiem

    SailGP

    https://www.doc.govt.nz/news/media-releases/2024-media-releases/doc-statement-sailgp-lyttelton/ DOC does not have a role in permitting or allowing the race to go ahead. The marine mammal management plan was developed by and belongs to the race organisers. DOC does not have a role in implementing it. SailGP has chosen to hold its event in a marine mammal sanctuary that was established for the protection of Hector’s dolphins.
  2. Most cars have fusible links in the start circuit. I wanted a way to manually isolate. In the event of an emergency it might be the relay controller that's smoking or worse the bms... The switch also isolates the BMS negative. Unless the bms and balancing is cascaded (which is a stupid design) then you can't truly isolate a Lithium. Maybe with a 6pst switch 😂
  3. It depends on what you want to achieve. But ultimately doesn't matter. Some standards recommend that both sides are isolated. Is the objective an emergency off, that isolates everything in the event of smoke? Or is the objective short term storage (1-2 weeks) to minimise all parasitic loads on a single battery? In a dual battery system, with solar, lithium BMS, voltage senses and all the extras you find hanging off the positive terminal and as close as possible to the battery I recommend a DPST on the negative side, that fully isolates both batteries in the event of smoke. T
  4. Well the boat also has 4kW of solar. So on a good day you could motor for 8 hrs without touching the battery... But yes it's definitely a whole lot more expensive... Reality is you don't need the generator. But everyone wants the generator because of range anxiety. An OceanVolt spec'd plug in non hybrid package (no generator) for Carpe Diem that would weigh less than the engine, take less space than engine and fuel tank, would give me 50Nm of range fully charged from shore power. The only time I have ever motored that far is on a time sensitive trip... otherwise I wait
  5. That's exactly what you do. The HH44 has a 10kW engine which is just a stock standard 3 cylinder kuboto red mechanical diesel that we all know. It has a 10 kW generator attached to the output shaft and also has the typical shaft drive propellor that most boats have. So the 10kW engine can be delivering 6kW to the drive shaft propelling the boat while driving the generator at 4kW charging your battery bank. When you stop the engine the battery powers the generator spinning the drive shaft. When you put the sails up the propellor spins the generator charging the batteries
  6. That's a great article. Thanks for sharing. I feel like I missed an opportunity to go electric 5 yrs ago... Now reading that maybe I didn't.. Haha
  7. LTO cells have 30000 cycles. LFP cells have conservatively 3000 cycles. Most now have 7000 cycles. Assume you are in a marina, you charge your batteries every week and you motor your full battery capacity (call it a conservative 15Nm) every weekend on a 3000 cycle battery bank... That's 57 years of weekend usage. They are going to outlast the boat. You run the generator occasionally cause you picked a light wind weather window and you are on a tight schedule. After 4.5 years I have put 225hrs on the engine. The most use it gets is making a deadline cause theirs
  8. An hydro generating electric motor with appropriate battery storage and a optimally engineered ice engine is an order of magnitude better for the environment. Running an ice engine at optimal torque with all the energy that can be being pumped into the batteries and nothing being wasted is why hybrid cars are so efficient. On a hybrid boat you get the double whammy option of being able to have extended range by having a propellor drive as well that can be also spun by the batteries or the diesel. When you are sailing you are also charging the batteries. And if the batteries g
  9. But you have a generator for when you need it. A purpose spec'd marine generator with a matched alternator is many times more efficient than a diesel sail drive engine. Our engines waste so much energy. I agree you can't get away from having a generator when you also have tight schedules and can't afford to Bob around for 48hrs waiting for favorable winds.
  10. I love the OceanVolt range. I really regret repowering to another diesel. A definite case of not knowing what I know now. 3 years ago I just thought I knew that diesel was the only option and there was no way electric could ever be an option... boy have I learned a lot. Where is Romanza now? Was on the poles at Westhaven but I have not seen her for a long time... A beautiful boat.
  11. This year it is $140k (ish) - so the most you get is 80% of that, which you will pay tax on - anything above that you need income protection insurance for. I will not judge if that is "low" or "high"
  12. It doesn't at all. It covers 80% of your personal income up to a threshold. After that you need income protection insurance. A lot of self employed eg tradies, come unstuck with income under the table or using valid options to reduce there income, eg fringe benefits...
  13. There's nothing to suggest this was a "deliberate" act. That's would be a very high bar to pass. He plead guilt to dangerously operating a vessel. That's a far cry from deliberating ramming your vessel into another. He didn't purposefully set out to ram the ferry. It was not a deliberate act
  14. It will be a steep hurdle to cross to get jail time - I would suggest he won't even see the full $10k of the fine. If there is no precedence then it will be in the 2k - 5k range. If there's precedence then it will depend on what those fines were and what they were for.
  15. New Zealand has ACC. While ACC is often unfair to the victim and victims often end up worse off, that's just the way it is. Our ACC is considered world leading and is envied by the developed world.
  16. The GPS satellites are also impacted by special relativity which says the faster you go the slower time passes. But they aren't going fast enough to cancel out the effects of gravity... So overall time goes faster (relative to us mortals). The iss is also affected by less gravity, but is going so fast that special relativity cancels out the gain from less gravity and overall time goes slower. (Again relative to us mortals.) I don't have a clue why, like I know the earth is flat, it just is
  17. A friend who is purchasing a relatively new 50ft production Cat has been told by his insurance broker that he'll be very unlikely to be able to get insurance for off shore if the vessel is NZ flagged. Have another friend with a 54ft Halberg Rassy who goes to the Pacific Islands every NZ winter. They registered out of Cook Islands because no one would insure them if it was NZ flagged. Seems that the reasons for a foreign flag aren't just to avoid Cat 1.
  18. Perfect sense. We get the empty effect after being thrown around in swells. Doesn't happen often and only ever after rough conditions. It's very noticeable with the alarm, the alarm cuts off after about 2-3 seconds. My theory is that the saildrive is coming out of the water allowing the water to drain out and air to get in. The anti-siphon on the d1 should be after the impellor! Between the impellor and the HX. On the larger D2's it should be after the HX. Between the HX and the exhaust mixer. It certainly should not be before the impellor so no chance for the impellor
  19. Do these generally just fail on start up? Or are they just as likely to fail during motoring? I installed a water flow alarm - so if it fails I will know instantly - but knowing instantly while in an inconvenient spot may not help...
  20. I got told to put it above the lowest point at a point where I felt it would not get wet. Gas fitter was quite clear that I knew the boat and that I could make the call. We have a nice teak grate at the bottom of the steps adjacent to the stove. When racing pulling in a scalloped kite, or in severe rain it can end up with with a few inches of water in it that slops around. Coming downstairs with soaking wet weather gear its a great place to strip off... It's always a compromise and is another item that has to be maintained, checked and loved. All up we have 14 independent disc
  21. Because Worksafe controls the secondary legislation which specifies what gas bottles can be imported to, or manufactured in, NZ. It used to be all under MBIE but when Worksafe split this went with them.
  22. Kind of a conundrum isn't it? How can you be compliant with a standard which according to that standard, doesn't apply, if your installation predates said standard? Personally I think that saying I am compliant, without making it clear that the standard does not apply to me would be misleading my insurer and imho goes against the well established doctrine of utmost good faith... and I might find my insurance revoked in the event of a claim. ymmv
  23. https://www.livesaildie.com/miss-scarlet-burns-sinks/
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