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21-03-2010, 12:58
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#46
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Registered User
Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 20,420
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Quote:
Originally Posted by missnmountains
Just to clarify the distance to horizon equation. The distance to horizon is the sum of (the square root of the height of "you" times 1.17) plus (the square root of the height of the object you see or the shore times 1.17)
Previous post suggest the you only calculate your height. You must also utilize the height of the object you are seeing.
Ken
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Negative. This would be for the distance to an object that is beyond the horizon but tall enough so that it sticks out.
b
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21-03-2010, 14:16
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#47
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One of Those
Join Date: Sep 2006
Location: Colorado
Boat: Catalac 12M (sold)
Posts: 3,218
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To find South using just an analog wristwatch ( or clock) point the hour hand at the sun. Pick the shortest distance on your wristwatch between the hour hand and noon (12) on the wristwatch. Half of that distance between the hour hand pointing at the sun and the 12 is South. In the northern hemisphere, anyhow.
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21-03-2010, 15:15
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#48
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Registered User
Join Date: Jan 2006
Posts: 14
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Jedi,
Sounds like you are doing well with your array. I wish I had room for more.
Fair Winds
Jim
s\v Kismet
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21-03-2010, 15:59
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#49
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Registered User
Join Date: Dec 2009
Posts: 2,959
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Rule of Thumb: The smartest poster on an internet forum is either wrong or completely misses the point about half the time.
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22-03-2010, 12:09
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#50
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Registered User
Join Date: May 2008
Location: St. Augustine, FL - an unwilling C.L.O.D.
Boat: Maine Cat 41
Posts: 519
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Wind direction rule of thumb:
The wind will blow from whatever direction we intend to go, or not at all (especially true on the Chesapeake)
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22-03-2010, 21:26
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#51
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always in motion is the future
Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 18,866
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Okay, here's one from a great Dutch scientist:
Face the wind and stretch your right arm out horizontally and back as far as possible without moving your shoulders. Your are now pointing at the low pressure area that is causing the wind. That is, when you're north of the equator. It's the exact opposite direction in the southern hemisphere.
The name of the scientist is Christophorus Henricus Diedericus Buys Ballot
and this is generally called Buys Ballot's law but they explain it in a backwards kind of way on that Wikipedia page (still correct though).
cheers,
Nick.
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10-06-2010, 07:34
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#52
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Registered User
Join Date: Jul 2008
Location: Palm Beach Gardens, FL
Boat: Spindrift 43
Posts: 28
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Quote:
Originally Posted by Prerequisite
Another rule is any project will cost twice as much as you plan, and take 3 times as long. I've tried to disprove this theory several times, but it's a stubborn rule that always wins.
Jeff
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My wife no longer asks me how long something will take, she asks what needs to be done. This does two things. The first is that she can then do her own estimate. The second, and most important, it allows me to find many of the missing steps that would have caused my estimate to have been grossly inaccurate.
Syd
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10-06-2010, 07:41
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#53
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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: 49,139
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Quote:
Originally Posted by s/v Jedi
... Face the wind and stretch your right arm out horizontally and back as far as possible without moving your shoulders. Your are now pointing at the low pressure area ...
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And conversely:
➥ Locating Low Pressure Systems - Weather Cruisers & Sailing Photo Gallery
__________________
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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10-06-2010, 07:44
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#54
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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: 49,139
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Cyclone Evasion
__________________
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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10-06-2010, 09:45
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#55
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Registered User
Join Date: Jul 2009
Location: Houston, TX
Boat: 1982 Oday 34
Posts: 439
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If she's more than ten days late, you're going to be a dad.
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29-06-2010, 13:59
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#56
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Registered User
Join Date: Jan 2010
Location: Brisbane
Boat: Outremer 5X
Posts: 105
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Give a man a fire and you will warm him for a day. Light a man on fire and you will warm him for the rest of his life.
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14-07-2010, 11:48
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#57
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Registered User
Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 20,420
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Quote:
Originally Posted by Poozer
Give a man a fire and you will warm him for a day. Light a man on fire and you will warm him for the rest of his life.
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?
I am dumb. English can be very idiosyncratic.
b.
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14-07-2010, 11:52
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#58
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Registered User
Join Date: Jul 2009
Location: Houston, TX
Boat: 1982 Oday 34
Posts: 439
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Quote:
Originally Posted by barnakiel
?
I am dumb. English can be very idiosyncratic.
b.
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The rest of his life ... as in he's not going to live much longer after you set him on fire. lol
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14-07-2010, 12:05
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#59
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Registered User
Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 20,420
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OK, so it is not the language that is idio-whatever, it is the sense of humour ...
barnie
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