AIT Around In Ten

Discussion in 'All Things Boats & Boating' started by Manie B, Feb 7, 2014.

  1. rayman
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    rayman Senior Member

    Hi Angel, thanks for that post, I had forgotten that it was so far back in time. I do hope Manie regains his interest in the wee boat. Angel, a few days ago I got onto a huge joke thread, not the funny boat joke thread but cartoons of any and everything, nothing smutty and I am sure I went into it somewhere here, do you know of it???
    regards rayman
     
  2. rwatson
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    Location: Tasmania,Australia

    rwatson Senior Member

    Mainies trip was never an option. Not only was his boat poorly designed for any long sailing trip, but he had no open sea experience.

    At least the old guy in the Torres Strait had a boat that sailed reasonably efficiently, looking at the photos. He had done a couple of circumnavigations before he claims, so he knew when to quit.

    This 60 footer just spent 9 days from Perth to Tasmania 3 days ago, across the Southern Ocean, and they encountered continuous 15 metre waves. You have never seen a crew so glad to be back on land.

    MikesBoat01.jpg
     

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  3. Angélique
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    Angélique aka Angel (only by name)

    If they had cruised for fun than they would have sailed through Indonesia and around PNG to visit you, and so they would have had much nicer cruising options and more time to enjoy it.

    If you go in a 10' boat then you don't have to earn and maintain a 60 footer, and also not have to earn the costs of cruising one, so there's the source of the extra time.

    AIT (Around In Ten) is about going around in a 10 footer, and not necessarily about a minimum amount of time underway, or a minimum of stops, or rounding the great capes, or going through Torres Strait and the like, or going into the southern ocean.

    The first one to finish will set a record anyway, no matter how long under way, or what route is taken, can even go (parts) with two, but that's only if you like each other very much . . :eek:

    It would be a nice start to do it coastal and island hopping, in relatively good weather windows, and wait for the right seasons for crossings, while doing a bit of work to earn some money for a living underway, and go through Panama and Suez, pirates all around the world would be the biggest health risk on this route though.

    Look for some inspiration about this travel style at the 1991 to 1997 circumnavigation of Rory McDougall and his Wharram Tiki 21 Cooking Fat aka Cookie, which I thinks is still the lightest boat ever that sailed around the world.

    WayBack Machine: Rory and Cookie
    The lightest boat ever that sailed around the world . . . ?

    Circumnavigation 1991 to 1997 of Rory McDougall with his 6.4 m Wharram Tiki 21 Catamaran Cooking Fat aka Cookie.
    Circumnavigation 1991 1997 Rory McDougall Wharram Tiki 21 6.4 m Catamaran Cooking Fat aka Cookie.jpg

    More recent: Rory and Cookie Blog
     
    Last edited: Mar 20, 2019
  4. rwatson
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    Location: Tasmania,Australia

    rwatson Senior Member

    What you say is 100% correct.
    BUT
    Manies little craft was the most awkward, under canvassed, inefficient hull design, that would have made island skipping impossible. It wouldn't have gone upwind.
    Such badly designed boats are like the barrel that is currently crossing the Atlantic - just a drift and pray job.

    So, not being able to maneuver around reefs and rocky shores, it would have had to be a deep water drifter, and in amongst the big monsters. Not at all fun.
     
  5. Stevealonso
    Joined: Apr 2020
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    Stevealonso New Member

    Does anyone have the details of the original legs for the AIT please. Cheers
     
  6. A II
    Joined: Jun 2020
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    A II no senior member → youtu.be/oNjQXmoxiQ8 → I wish

    Far as I know there are no prescribed legs for an AIT attempt. Just go around the world by use of both hemispheres, the use of canals and as many stops as one would like are all allowed. No matter what time used, the first one to finish will set a record, as no one has registered a finish yet with a max 10' boat.
     
    Last edited: Jul 30, 2020
  7. artis
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    artis Junior Member

    Hi all and thank you for all the valuable insights you had shared in this thread.

    Is anyone still interested in the ‘around in ten’ idea? If yes, I have a design in my mind, which might actually make it possible. I described it in this thread: Unusual design for an extra-heavy-displacement 11ft long Atlantic Proa for circumnavigation https://www.boatdesign.net/threads/unusual-design-for-an-extra-heavy-displacement-11ft-long-atlantic-proa-for-circumnavigation.68579/

    I know it’s not exactly 10 feet but 11 and half feet, but we intend to sail around the world as a couple in that boat which is twice as difficult (at least provisioning-wise).

    If any of you have some insights or thoughts about how my design might work in the real world ocean conditions, I will be greatly appreciative of your input.

    Have a great day everyone!
    Artis.
     
  8. Will Gilmore
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    Will Gilmore Senior Member

    She looks like a large, weighted, cork. I cannot imagine that vessel sailing anywhere the currents don't take her. I like the idea of her, multiple deck levels to increase accommodations, but to expect sail power to drive her seems optimistic.

    Given enough time, you may get where you are going, but to put that design into bluewater and sleep through a watch below, one must have supreme confidence in the ability to escape from below in case of a collision. Any breach would sink her like a rock.

    -Will
     
  9. rwatson
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    rwatson Senior Member

    Badly. Very badly. Stick to writing science fiction.
     
  10. artis
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    artis Junior Member

    Thanks for your input, I appreciate it. Would you mind describing why exactly do you think she would not sail under sail power? In my mind, the only problem I see is her excessive wetted surface area, but this should be compensated by the sleek geometry of the hulls and the extremely high lateral resistance. Am I not seeing something?
     
  11. artis
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    artis Junior Member

    Here I agree to you completely. I was struggling a lot to accept the fact that I can’t make a foam flotation in this design and make it unsinkable. But indeed, you can’t make a submarine unsinkable. The only comfort here is in the fact that the boat is extremely small (and therefore inherently strong, due to the square-cube law) and it is welded from a 10mm thick steel, which even for a big boat would be very strong. And because of that, I hope that a collision with any type of vessel which doesn’t carry AIS, would end with a mere scraping the rust/paint off my hull (but possibly sinking the other vessel involved in the collision)… am I too wrong with such a hope?
     
    Last edited: Nov 25, 2023
  12. artis
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    artis Junior Member

    Would you mind elaborating why exactly? Anything else besides the excessive wetted surface area, which I mentioned above?
     
  13. Will Gilmore
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    Will Gilmore Senior Member

    Yes. And...

    I didn't mean to imply that she wouldn't sail, just that she seems like she would sail very very slowly and be unduly subject to currents because of her deep wetted footprint. I also see her center of resistance, not just her lateral resistance, as being well below the waterline. So deep in fact, that her relatively high center of effort would actually cause greater heeling and thus, excessive air spillage.

    Let it be known, I am not a naval architect. I am an artist, woodworker, farmer, and I write a little sci-fi, I also sail too.
     
  14. artis
    Joined: Nov 2023
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    artis Junior Member

    Thanks for the comment. Yes, I agree she will be slow, that’s for sure. As I wrote in my other thread: if she will average around 2 knots I will be completely satisfied, as long as it happens in a safe and controllable manner. We are in no rush to quickly cross to the other side.

    And I agree that with such speeds, I will have to treat all currents with great deal of respect (which I already do anyway). The good news is that the currents are easy to predict, and with a couple exceptions (like the Gulfstream) they are either very slow, or they change their direction every six hours. So I can easily plan around them by anchoring and timing our entry into the current, which I am used to be doing anyway, even when sailing conventional yachts. And the changing currents, you can choose to use in your advantage- there is no need to fight the Pacific equatorial countercurrent when going west, if you can choose to sail another “conveyor belt” right next to it which goes in your direction (the Pacific South equatorial current).

    About the very low centre of resistance, you are right again. But I actually think that the air spillage is my friend, not an enemy in this case. If there is an excessive air spillage, that means I should have been reefed already by that time, and should have been going slower. And if I wasn’t, I actually do want the air spillage to ease the excessive loads on the rigging and wake me up that it’s time to reef. The same goes about the aft-to-fore heel, which I also discussed on the other thread.
     

  15. Will Gilmore
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    Will Gilmore Senior Member

    I doubt you will need to reef that vessel except to protect the rig itself. Large waves will be your biggest enemy. With that depth and so little surface flotation, you may be in danger of tripping. But maybe not. The counter current under a rolling wave may be below even that keel on a wave big enough to affect you.
     
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