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08-07-2010, 12:22
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#1
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Registered User
Join Date: Feb 2010
Location: UK
Posts: 834
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Seasickness
How does the motion of a catamaran differ from that of a monohull? It seems to me that having two hulls would generate a rolling motion across the beam of the boat as well as the usual fore-and-aft motion. With two hulls, one of them will rise or fall before the other.
Is it easier to get seasick on a cat?
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Ford Prefect: "Why? What did she say?"
Arthur: "I don't know - I didn't listen!!"
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08-07-2010, 12:28
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#2
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Registered User
Join Date: Apr 2009
Location: Bourbonnais, Illinois
Boat: McGregor venture 15 "IMP"
Posts: 506
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In my experience it is much easier to get sick on a mono. The seems to pitch and roll more. The two hulls of the cat gave a more balanced motion. Others may have differing opinions. But I take less Dramamine on a multi. The only way to be certain is to get out there and try it!
Spencer
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08-07-2010, 12:41
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#3
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Registered User
Join Date: May 2005
Location: Cruising Greece
Boat: Cat in the med & Trawler in Florida
Posts: 2,323
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less chance on a cat
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08-07-2010, 13:04
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#4
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Registered User
Join Date: Apr 2009
Location: Malvernshire, on the sunny side of the hill.
Boat: 50' steel canal and river cruiser
Posts: 1,905
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Its all in the mind. But I DO mind. I hate being sick.
I thought cats hobby horsed while monos rolled
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08-07-2010, 13:09
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#5
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Registered User
Join Date: Apr 2009
Location: Lake Macquarie
Boat: Bluewater 420 CC
Posts: 756
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Quote:
Originally Posted by mintyspilot
How does the motion of a catamaran differ from that of a monohull? It seems to me that having two hulls would generate a rolling motion across the beam of the boat as well as the usual fore-and-aft motion. With two hulls, one of them will rise or fall before the other.
Is it easier to get seasick on a cat?
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I thought exactly the same thing, until I went on a longish trip on one. I'm currently building a new mono so that where I stand in the cat v mono thing. However they do sail surprisingly flat even in 2-3m swells. You actually can leave your coffee just sitting on the saloon table until things start to get very bumpy. I'm building a mono for long open ocean passages. When I'm done doing that it will probably be traded for a cat. Go for a ride, you may not be converted but you'll certainly see that they have plenty going for them. The first day ever that my wife didn't get sea sick was on a cat and it was quite a choppy sea.
Greg
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Greg
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08-07-2010, 13:26
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#6
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CF Adviser
Join Date: Apr 2006
Location: Pac NW
Boat: Boatless, for now, Cat enthusiast
Posts: 1,318
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The problem is that motion sickness is somewhat idiosyncratic. What might make one person feel it might be different for another. For me, the rolling motion of a mono does it. I've talked to others that are more effected by the jerkiness of a cat. I do find that, for me, I'm more prone to it after I've been off the boat for a few weeks, but I seem to get my sea legs back a little quicker on a cat.
Try them both and judge for yourself. That's really the only way to know.
ID
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Intentional Drifter
Observations are gold; hypotheses, silver; and conclusions, bronze.
Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote.--Ben Franklin
Everyone is entitled to their own opinion, but not their own facts.--Daniel Patrick Moynihan
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08-07-2010, 15:42
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#7
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Registered User
Join Date: Mar 2008
Location: Calgary, AB, Canada
Posts: 6,252
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Years ago I was on a monohull traveling with a cat in the Leewards. All of the motion sickness was on the cat. Of course, mal de mer was a constant topic on the cat, so that might have been a factor.
I prefer the motion of a monohull in waves; the cats float over the waves, a monohull cuts through them.
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08-07-2010, 20:52
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#8
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Registered User
Join Date: Sep 2006
Location: Out of the Office
Posts: 909
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More of a fore and aft movement on a cat. Not sure if that is a good or bad thing for motion sickness. I suspect different people react in different ways.
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08-07-2010, 21:51
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#9
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Registered User
Join Date: May 2008
Posts: 3,521
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I was told by a usually reliable source that the US Navy did a study as part of plans for cat naval ships. They found that - while fewer people do get sick on cats - some become very seasick. Also, people generally only get sick on either a mono or a cat - not both. A significant number of sailors who never became sick on conventional ships became sick on a cat.
As I mentioned, I haven't actually seen this study. And I was told of it in a bar. Late
Anyone know of it?
Carl
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08-07-2010, 23:53
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#10
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Registered User
Join Date: Apr 2010
Location: Me: Hong Kong, Boat: Turkey
Boat: Lagoon 380 - Times like these. Port: Mooloolaba, Australia
Posts: 86
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If there’s some swell around and I’m down in the bilge/s, I don’t do that well in a cat or a mono.
Maybe not related so much to sea sickness, but when you’re at anchor and there are some rollers broad-siding the boat, the cat feels much more stable to me.
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I've sent in my application to the Real World. So I'm hoping to hear back from that....
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09-07-2010, 06:30
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#11
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Senior Cruiser
Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 49,083
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Quote:
Originally Posted by CarlF
I was told by a usually reliable source that the US Navy did a study ...
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Probably not Lieutenant (USNR) Robert Schwab’s 1943 paper, “Chronic Seasickness: Neurologic, Psychiatric and Naval Aspects”
➥ http://archneurpsyc.ama-assn.org/cgi...t/48/3/496.pdf
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Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"
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09-07-2010, 06:39
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#12
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Registered User
Join Date: May 2005
Location: Cruising Greece
Boat: Cat in the med & Trawler in Florida
Posts: 2,323
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I have new people almost every week from 2 to 8 persons a week and the seas run from nothing to 15 feet- what i know is grated ginger made into a tea works very well and if you chase it with some fizzie water and ginger snaps even better-
I rarely have people sea sick, 1 or 2 a month may get lightly sick-
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09-07-2010, 06:57
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#13
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Moderator... short for Cat Wrangler
Join Date: Jul 2009
Location: San Francisco
Boat: Cal 28 Flush Deck
Posts: 5,559
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Quote:
Originally Posted by anjou
Its all in the mind. But I DO mind. I hate being sick.
I thought cats hobby horsed while monos rolled
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actually it all in the ears and eyes...
So maybe it's 'All in yer head' would be more accurate... ; -)
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Sara
ain't what ya do, it's the way that ya do it...
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09-07-2010, 07:00
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#14
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Registered User
Join Date: May 2008
Posts: 3,521
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It seems that Charles Darwin was one of those "chronic" seasick people mentioned in Gord's study. He was reportedly sick for the duration of each leg of the Beagle's voyage.
No wonder he wanted to get out and walk around a lot the moment the ship touched land. But for seasickness, Darwin might be unknown today.
I doubt that this piece of historical trivia is much comfort while seasick.
Carl
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