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Mark Morwood

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About Mark Morwood

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    Brisbane - after 4 years cruising Bahamas, Atlantic, Med, Caribbean, Pacific
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    was: Catana 48
    "Por Dos"

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  1. Agreed, the only thing I'd add though is that as DSC is layered on top of classic VHF, once you have their attention through DSC you can then have the emergency conversation by voice on channel 16 or the like. This is unlike an EPIRB where it is one way communication and they have no way to communicate back with you, and the assets are being tasked with much bigger missions, so confirmation is very important. This of course is oversimplifying the situation where intermediate radios may have relayed your DSC emergency call, in which case you are hoping to talk to someone near you.
  2. I think you'll struggle to prove it will work, but I do not understand the circumstances under which the country you are chartering in will have made it not work. Please correct me if I'm wrong, but here is my understanding of how the MMSI is used in DSC VHF: - your ID is attached to any digital (DSC) calls that you make, the same way your phone number is usually visible to someone you call with a phone - that ID can then be used to call you back directly - your radio knows its number and will respond when another radio does a broadcast trying to connect to it - emergency cal
  3. I think you might be confusing PLBs with Personal Satellite Messengers. PLBs are the same technology as EPIRBS, just designed for individual rather than vessel use so have different characteristics in terms of battery life, size and weight. PLBs and EPRIBS connect through the global network of rescue coordination centers that are government funded. Personal satellite messaging devices like SPOT or Garmin InReach are as you say, connected through private services that are responsible for then connecting to the local rescue services.
  4. I was suggesting completely ignoring the roller once deployed. The rode would go from the cleat to the fairlead straight to the anchor - just as if it were the dock line in your photo. Just use the roller to store the anchor. When stored the the rode would run back outside everything to your existing fairlead to the cleat or whereever you store the rode. If the roller isn't useful for storing the anchor, then I was suggesting just pretend it doesn't exist. Mine was the just use what you've got suggestion given the roller does not look useable as it is for the reasons you and others have o
  5. Why change anything? Stow and deploy the anchor from the existing roller, but lead the rode through the fairleads already set up for the port cleat? As was pointed out above, a stern anchor is usually not straight astern, so the fairleads you already have are probably in the optimal spot already for a port quarter deployment. For starboard you'll need to move the rode.
  6. We found it useful to keep the dinghy anchor and rode all in a bag. Saved the inside of the dinghy and kept it all together. You can just use a canvas tote bag, but I ended up making a sunbrella bag with separate compartments for the anchor and rode (don't coil it, just stuff it in in the right order and it will pull out) with a mesh bottom. The bitter end came out through a hole in the bottom of the bag and was tied off so you didn't lose the lot if you just threw the anchor overboard and let the line run out of the bag.
  7. That was my strategy until we got hit by lightning 6 weeks into a world cruise which took out both autopilots. After that I just kept a primary and secondary ram installed and spares for all the electronic components in foil in a box. That may just have been an example of me fighting the last war. I guess it really just depends which failure mode you are trying to optimise for. I did have the advantage of competent crew to steer if I needed to fix anything. The approach might be very different single-handed. And Ajax, you strike me as being well prepared for your trip. Go for it and enjoy
  8. Not feathering? Slightly more drag, and still able to catch lines when "folded", but usually better for manoeuvring because of efficient reverse.
  9. Given I've got a timezone advantage on estar, I'll sneak in an answer while waiting for the right answer with respect to which splice to use. If your bridle is fixed length, why not make it up as two separate legs and put your shackle or whatever you are connecting at the apex through both individual eyes? Then the splices are easy - anything will work I think.
  10. Nope. And the GPS III satellites purchased after 2007 do not even have the capability. https://www.gps.gov/systems/gps/modernization/sa/IGEB/
  11. Selective Availability was turned off by the Clinton administration in 2000. I think very recent standard GPS receivers have an accuracy down around 30cm, without doing any of the special corrections that have been used in the past to get more accurate results for surveying. I have no idea what generation with what accuracy is in B&G receiver, but I'm guessing it's likely to be about 2 metres. A modern phone should do that well or better if it has a clear view.
  12. That could be a very subtle start to a catamaran v mono-hull thread!! :-)
  13. Minor quibble, Outremer is definitely a production boat with their website claiming almost 400 built.
  14. For me, and at least few other people on here who have cruised with performance oriented catamarans, that is simply not true. We also cared about sailing while cruising. In particular the ability to sail in light winds and not turn on the engines made a big difference to our enjoyment of the time we were moving between places. Not to say a Lagoon isn't a perfectly fine boat, I just would not enjoy it as much cruising as I would a more performance oriented cat with some light wind sails, though I would definitely take it in preference to a Bavaria which is another perfectly fine boat for many.
  15. Here's a thread from last year:
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