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    • UnderDawg

      A Few Simple Rules   05/22/2017

      Sailing Anarchy is a very lightly moderated site. This is by design, to afford a more free atmosphere for discussion. There are plenty of sailing forums you can go to where swearing isn't allowed, confrontation is squelched and, and you can have a moderator finger-wag at you for your attitude. SA tries to avoid that and allow for more adult behavior without moderators editing your posts and whacking knuckles with rulers. We don't have a long list of published "thou shalt nots" either, and this is by design. Too many absolute rules paints us into too many corners. So check the Terms of Service - there IS language there about certain types of behavior that is not permitted. We interpret that lightly and permit a lot of latitude, but we DO reserve the right to take action when something is too extreme to tolerate (too racist, graphic, violent, misogynistic, etc.). Yes, that is subjective, but it allows us discretion. Avoiding a laundry list of rules allows for freedom; don't abuse it. However there ARE a few basic rules that will earn you a suspension, and apparently a brief refresher is in order. 1) Allegations of pedophilia - there is no tolerance for this. So if you make allegations, jokes, innuendo or suggestions about child molestation, child pornography, abuse or inappropriate behavior with minors etc. about someone on this board you will get a time out. This is pretty much automatic; this behavior can have real world effect and is not acceptable. Obviously the subject is not banned when discussion of it is apropos, e.g. talking about an item in the news for instance. But allegations or references directed at or about another poster is verboten. 2) Outing people - providing real world identifiable information about users on the forums who prefer to remain anonymous. Yes, some of us post with our real names - not a problem to use them. However many do NOT, and if you find out someone's name keep it to yourself, first or last. This also goes for other identifying information too - employer information etc. You don't need too many pieces of data to figure out who someone really is these days. Depending on severity you might get anything from a scolding to a suspension - so don't do it. I know it can be confusing sometimes for newcomers, as SA has been around almost twenty years and there are some people that throw their real names around and their current Display Name may not match the name they have out in the public. But if in doubt, you don't want to accidentally out some one so use caution, even if it's a personal friend of yours in real life. 3) Posting While Suspended - If you've earned a timeout (these are fairly rare and hard to get), please observe the suspension. If you create a new account (a "Sock Puppet") and return to the forums to post with it before your suspension is up you WILL get more time added to your original suspension and lose your Socks. This behavior may result a permanent ban, since it shows you have zero respect for the few rules we have and the moderating team that is tasked with supporting them. Check the Terms of Service you agreed to; they apply to the individual agreeing, not the account you created, so don't try to Sea Lawyer us if you get caught. Just don't do it. Those are the three that will almost certainly get you into some trouble. IF YOU SEE SOMEONE DO ONE OF THESE THINGS, please do the following: Refrain from quoting the offending text, it makes the thread cleanup a pain in the rear Press the Report button; it is by far the best way to notify Admins as we will get e-mails. Calling out for Admins in the middle of threads, sending us PM's, etc. - there is no guarantee we will get those in a timely fashion. There are multiple Moderators in multiple time zones around the world, and anyone one of us can handle the Report and all of us will be notified about it. But if you PM one Mod directly and he's off line, the problem will get dealt with much more slowly. Other behaviors that you might want to think twice before doing include: Intentionally disrupting threads and discussions repeatedly. Off topic/content free trolling in threads to disrupt dialog Stalking users around the forums with the intent to disrupt content and discussion Repeated posting of overly graphic or scatological porn content. There are plenty web sites for you to get your freak on, don't do it here. And a brief note to Newbies... No, we will not ban people or censor them for dropping F-bombs on you, using foul language, etc. so please don't report it when one of our members gives you a greeting you may find shocking. We do our best not to censor content here and playing swearword police is not in our job descriptions. Sailing Anarchy is more like a bar than a classroom, so handle it like you would meeting someone a little coarse - don't look for the teacher. Thanks.

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MR.CLEAN

Dronin' On - Ask Richard Jenkins About The SailDrone

37 posts in this topic

Just last week we gave you the news about SailDrone's historic unmanned voyage from 'frisco to Hawaii. With their safety-orange drone safely tied down, we're getting project designer and leader Richard Jenkins on the line for another great SA Innerview.

 

Whether you're a tech freak, a RC sailboat lover, or just a lover of all things dronish, get your questions in about this potentially revolutionary little sailboat here, and Mr. Clean will make sure the good ones get asked in our video Skype chat. Deadline for questions: Friday at 1300 GMT. Saildrone photo.

 

 

 

 

Hawaii_dep3.jpg

Hawaii_dep.jpg

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Did y'all know that Richard has sailed faster than anyone else on this planet in the history of history ???

 

No kidding.

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Has there been any consideration on using these as a oceanic research platform?

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Richard,

 

Congrats on completion of first Zero Handed Transpac!. A navigational question. Given that SD1 averaged 5.4 knots through the water, and 130 miles/day for the first five days, is there an obvious explanation why it then only averaged 2.3 knots and 55 miles/day for the remaining 29 days? I'm guessing maybe it snagged some plastic or netting, but have no idea what the underwater configuration looks like. Comments appreciated.

 

~sleddog

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Richard,

 

Congrats on completion of first Zero Handed Transpac!. A navigational question. Given that SD1 averaged 5.4 knots through the water, and 130 miles/day for the first five days, is there an obvious explanation why it then only averaged 2.3 knots and 55 miles/day for the remaining 29 days? I'm guessing maybe it snagged some plastic or netting, but have no idea what the underwater configuration looks like. Comments appreciated.

 

~sleddog

 

 

I read that they left the bay in a gale and it survived.

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.

 

...is it true this project was funded by the Columbian drug cartels?!? :mellow::rolleyes:

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1) Was the boat carrying any spare load during the trip (it has a 100kg capacity ?) and roughly how much is the boat slowed when carrying the extra load compared to not carrying it.

2) What are the biggest areas of improvement for future saildrone's?

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Gosh..okay..me first! What's it rate?

 

Seriously though is a cool platform, my question is while you can assume the "big ocean, little boat" theory for not getting hit, at what limit does stability go away? wind speeds, wave height etc..awesome that you launched it in a gale!.

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Does the drone transmit it's location on AIS?

Does it use an AIS receiver to try to avoid collisions?

Does it have any other sensors to detect other traffic?

Does NASA want a version for the methane lakes of Titan?

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Congratulations on a tremendous achievment!

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Hiya, a question about the control systems and power - whats the brains of the machine, and how it is powered?

Cheers and well done!

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IIRC he even wrote a story for us back when Greenbird hit her big number.

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I think I read it was self righting. How does that work with a wingsail on a tri fully inverted?

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Is there any system to help avoid collision with other vessels? I doubt that SailDrone could do any damage to another vessel, but it could easily be destroyed by a freighter. Is the little guy just light enough and strong enough that it won't get shredded by some giant ship that doesn't see it?

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1. Why Tri? 2. Mobile ballast? 3.Regenerative sailing? Any programming need for evasive manuvers? (storms, ships, sharks....)

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Good job on your mission to date, good luck in the future. As noted above, your vessel/robot really slowed at the end of its voyage, problems?

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I think I read it was self righting. How does that work with a wingsail on a tri fully inverted?

 

 

1. Why Tri? 2. Mobile ballast? 3.Regenerative sailing? Any programming need for evasive manuvers? (storms, ships, sharks....)

 

The Saildrone's hydrodynamic design is a hybrid, combining the best features of mono- and multi-hulls. The result is a fully self-righting platform, that also benefits from high righting moments for speed and wave piercing capabilities to reduce pitching and energy absorption from waves.

 

I'm guessing that the 6 ft keel is heavy enough and the 20 foot wing is buoyant enough that it is not stable either upside down or on it's side, which is what I think they mean by "fully self-righting".

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As for the speed, it looks to me like they not only had a lot of wind at the beginning, but they had to do a lot more tacking from about 40% of the way on. It is not exactly the height of the season for sailing to HI, and the route is pretty straight, which I gather would be very slow in the middle of a typical Pac Cup.

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Hi,

 

first-time participant. im actually just starting a project on a sail drone for oil clean up at TU Delft. this project is very interesting for me.

 

This is a question about the design process. How did you come up with the range of wind speeds that you deemed 'operational', 'survival', and 'act of god'. And as the design developed, was the survival mode paramount? When, on the other hand, the thing should make progress in moderate/light wind?

 

Thanks,

 

Nico

Master student

Ship Hydromechanics

TU Delft

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Another Q -

 

Does Saildrone use weather routing software that takes into account forecasts (similar to that on racing yachts), to optimise its route? or would this be done my the shore team sending new routing instructions?

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Any more? We'll be getting it on in an hour.

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Does the drone transmit it's location on AIS?

Does it use an AIS receiver to try to avoid collisions?

Does it have any other sensors to detect other traffic?

.

 

...can these systems be used to detect and avoid other traffic? :rolleyes:

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I think I read it was self righting. How does that work with a wingsail on a tri fully inverted?

 

 

>1. Why Tri? 2. Mobile ballast? 3.Regenerative sailing? Any programming need for evasive manuvers? (storms, ships, sharks....)

 

The Saildrone's hydrodynamic design is a hybrid, combining the best features of mono- and multi-hulls. The result is a fully self-righting platform, that also benefits from high righting moments for speed and wave piercing capabilities to reduce pitching and energy absorption from waves.

 

I'm guessing that the 6 ft keel is heavy enough and the 20 foot wing is buoyant enough that it is not stable either upside down or on it's side, which is what I think they mean by "fully self-righting".

 

 

I guess I didn't read thoroughly enough... I too would suspect that a 6' draft keel would suffice for self righting on that little thingy.

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I think I read it was self righting. How does that work with a wingsail on a tri fully inverted?

 

 

>1. Why Tri? 2. Mobile ballast? 3.Regenerative sailing? Any programming need for evasive manuvers? (storms, ships, sharks....)

 

The Saildrone's hydrodynamic design is a hybrid, combining the best features of mono- and multi-hulls. The result is a fully self-righting platform, that also benefits from high righting moments for speed and wave piercing capabilities to reduce pitching and energy absorption from waves.

 

I'm guessing that the 6 ft keel is heavy enough and the 20 foot wing is buoyant enough that it is not stable either upside down or on it's side, which is what I think they mean by "fully self-righting".

 

This is the question I would like to have answered, in theory a larger version of this would be my ideal boat. How did they decide on the balance of keel weight if there is any and the size of the floats, or is it just a dagger board full of water? Is there a pumping action as well, filling and then emptying floats to right it? At what wind strength is the boat un-controllable? i.e with the wing feathered the boat just keeps capsizing or what technique have they evolved to keep this in check?

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All answered! A great interview and I should have it done tonight.

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All answered! A great interview and I should have it done tonight.

It's getting close to Monday...

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.

 

...is it true this project was funded by the Columbian drug cartels?!? :mellow::rolleyes:

 

no that's the silent submarine glider one

 

Shhhhhhhhhhhhhhhhhhhhhhhhh :o:o:o

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Is it just me or has the interview not been posted. If Im being thick and have missed it, could someone point me in the right direction. Cheers

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Great accomplishment. Amas (floats) look too small. Main hull is under water much of the time. Where's the interview?

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I think small amas are to allow self righting. Looks like Palmyra is the current target. TNC delivery?

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