Just fore the fun of it:)

[ben2go]

Re: Just fore the fun of it

I rarely hunt.When I do,it's for food,not for sport.I find no satisfaction in killing animals.I do however,find satisfaction in feeding my family.

Enough of my thread jacking.

Peter,can't wait for the next installment of Turtle Bay winter layup.

[Sailor]

Re: Just fore the fun of it

Ask me? Ask me what? Are we back to the ol' "CH" again?

[WX]

Re: Just fore the fun of it

Every 10 days? PSHAWWW, I mow every 5 when it's summer here but like Tenner, it gets cold and the grass goes dormant for the winter. I should have mowed it once more about a month ago but didn't bother. I'll leave it for now. I wish I could go 10 days without mowing it..... So not only to we mow the same number of times per year (assuming I mow twice as often for half the time) but we manly men of the north shovel snow all winter as well.

Keep in mind my house is two stories high.

[Spin_Drift]

Re: Just fore the fun of it

Happy thanksgiving. May it be full of love, friends and good wood...oops, food...

[ben2go]

Re: Just fore the fun of it

When is Canadian Thanksgiving?

[Ryden]

Re: Just fore the fun of it

Ils disent que la chatte a le goût d'anchois.


Je ne sais pas, je n'ai jamais goûté d'anchois...

True story:
My brother in law is from England and has the surname Beaver.
His brother has two boys who are called Callum, which is fine, and Sean...

[flyinwall]

Re: Just fore the fun of it

so do we get to see more of her packed away for the winter months????

[Ryden]

Re: Just fore the fun of it

I certainly hope so!
Oh, your talking about the boat...

How are you going to lodge Turtle Bay over the winter now that the bowshed is gone? She's just born and needs to be pampered.
Maybe a new one in a fashionable colour.
I hear that blue is the new black

[Soundman67]

Re: Just fore the fun of it

When is Canadian Thanksgiving?

Thanksgiving Day in Canada has been a holiday on the second Monday of October since 1957

[TR]

Re: Just fore the fun of it

So at long last we've finally got a series of righting arm curves to stare at........



Above you see three curves, heel angle is along the bottom and righting arm length in decimal feet up the side. We can see max righting arm is around 20 degrees in all cases. Angle of vanishing stability (where the curve crosses zero righting arm) ranges from approximately 43 degrees for Lightship condition to above 60 degrees for Full Load condition. Remember operating condition is between Full Load and Arrival (10% liquids). Also note there still some righting force at 55 degrees heel in the full load condition.

Obviously these curves are very different from those of ballasted sailboats that many have seen. Often the AVS (angle of vanishing stability) is well above 100 degrees for typical sailing yachts. These curves represent a protected water cruiser which would not be intended for open water crossings though with prudence she could certainly undertake such. Turtle Bay is of a type that would qualify for ISO category C or D operation. Cat C allows operation in waves up to 2m in height, wind force of Beaufort 6, and wind speed of 17m/sec(33 knots).....They mention exposed inland waters, estuaies, and coastal waters.

The GM at 57.3 degrees (one radian) and Slope lines represent a basic check of the curve slope at small angles of heel.

One thing not obvious from this is that downflooding does not occur on this boat even at 55 degrees heel. The windows and forward cockpit are above water even at high angles. I'll try and get a representation of that together now. I would guess that she will lay right over on her side, running out of stability and then gaining it back (due to the huge shift in I as her side enters the water) to become almost impossible to invert.

[TR]

Re: Just fore the fun of it

Phil was a pretty smart guy and here's some more evidence.....This is Windermere heeled 55 degrees. The bottom edge of the side windows (the open seam) are just kissing the water line (This is Arrival condition) and the cockpit edge is well above the water. I'll guess the forward cockpit will stay above waterline even at 90 degrees heel......

[Sailor]

Re: Just fore the fun of it

WOW, that's pretty impressive. Much more respect for the Bolger boxes after seeing that. Thanks for all this work. I tried to send you a question by PM but it was too long..... (It included a paper I wrote recently though so I guess I had to expect that) It was pertinent to this stability topic we've been following along.

[essaunders]

Re: Just fore the fun of it

but what about the beer cooler? Wasn't it on the roof? Of course, from what I read it won't stay full for long.

Seriously though, this is really nice information. Thanks for putting it into context with the Cat C or D reference.

Some other reading I've done referenced a replica dutch barge that was expecting a Cat C rating but got a Cat B - perhaps due to stronger glazing. Would stronger glazing and/or shutters bump Windermere up on the scale too?

[TR]

Re: Just fore the fun of it

Sailor,

Just email me, tadroberts-at-shaw.ca

[TR]

Re: Just fore the fun of it

ess......

Awarding the ISO Category is moderately complex (perhaps we should look at that in more detail), there are a bunch of factors involved including wind heeling, area under the righting arm curve, size of cockpit, etc. If you install strong enough windows at some point they become hull ports (though size counts) and are considered watertight and not downflooding points. The reality is I doubt this makes much sense as they get heavy and VCG goes up.........