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wrote:

Bart Senior wrote:
How long is a minute of Longitude--at your Latitude?
And what is the formula to calcuate it?

There are 1440 minutes to a day, regardless of what latitude or
longitude you live in. Divide that by 360 (degrees) you get 4 (mins).
Every degree of longitude you have 4 mins.

Rgds
Ravi

Incorrect Ravi. Perhaps I should have been more clear. I am looking
for a distance not a time measurement.

One minute of arc is 1 nautical mile where ever you are. The earth is
not a sphere, there is about a 1% difference between the values at the
poles. Close enough for us to call in a sphere.

This works out nicely because for latitude, the spacing between
lines of latitude is constant. This was defined as a nautical mile
because it was fairly close the the distance used on land, the
statute mile. It is easier to use the nautical mile to avoid
constantly
converting from one unit to the other.

So one minute of latitude is one nautical mile and one can read
this measurement off the edge of a chart as well as the distance
scale on the bottom of the chart and be equally accurate.

For longitude lines which converge at the poles things are different.
At the poles a minute of longitude is impossibly short and approaches
zero as you approach the pole. Moving away from either of the poles
to the equator, one minute of arc approaches 1 [1 nautical mile].

There is a formula for this:

1 minute of longitude = the cosine of your latitude in nautical miles.


I live at 41.265 North The cosine of which is: .752.

So 1 minute of longitude at my location can be approximated
as 3/4 of a nautical mile. It is a handy thing for me to know.

BTW, thank for the invite. Do you have any pictures of your part of
the world, and your boats you can show us?

Bart


Good tip. I was thinking is spherical projection rather than polar
projection. Thanks

Bart Senior wrote:
How long is a minute of Longitude--at your Latitude?

And what is the formula to calcuate it?

OZ, although your posts are mostly negative, for you it
would not be a negative number.
..

Sorry, I misunderstood the question. But in the process met an online
community of sailors! So I am happy.

Some of you wanted to know more about where I sail. I and my wife sail
in Chennai (formerly known as Madras) on the south eastern coast of
India. We have two sailing clubs here. One is the Royal Madras Yacht
Club (94 years old!) and one is the Tamilnadu Sailing Association (4
years old). We are members of both the clubs and sail from either.
Anyway both clubs are adjacent to each other.

We sail outside the harbour in the Bay of Bengal. General conditions
are 10 to 15 Ks of wind this time of the year. In another fortnight it
will go up to between 20 and 25 and we will be in for a season of
squalls. We will be having good swells too. About 2 to 3 metres. Not
much of tides though. We get to sail 365 days in a year! Temperatures
soar to a 112 F in the peak of summers and winters are a pleasant 80 to
85!

We have about 25 to 30 boats on the water on the weekends. And that
includes a clutch of Optis, Enterprises, Lasers and the couple of
Yachts (Maxi 77) I had mentioned. Will load up some pics this week and
let you all know.

Any one of you ever visits this part of the world? for work or
pleasure? Welcome all anyway!

Ravi

wrote:
Bart Senior wrote:
How long is a minute of Longitude--at your Latitude?

And what is the formula to calcuate it?

OZ, although your posts are mostly negative, for you it
would not be a negative number.
..

Sorry, I misunderstood the question. But in the process met an online
community of sailors! So I am happy.

Some of you wanted to know more about where I sail. I and my wife sail
in Chennai (formerly known as Madras) on the south eastern coast of
India. We have two sailing clubs here. One is the Royal Madras Yacht
Club (94 years old!) and one is the Tamilnadu Sailing Association (4
years old). We are members of both the clubs and sail from either.
Anyway both clubs are adjacent to each other.

We sail outside the harbour in the Bay of Bengal. General conditions
are 10 to 15 Ks of wind this time of the year. In another fortnight it
will go up to between 20 and 25 and we will be in for a season of
squalls. We will be having good swells too. About 2 to 3 metres. Not
much of tides though. We get to sail 365 days in a year! Temperatures
soar to a 112 F in the peak of summers and winters are a pleasant 80 to
85!

We have about 25 to 30 boats on the water on the weekends. And that
includes a clutch of Optis, Enterprises, Lasers and the couple of
Yachts (Maxi 77) I had mentioned. Will load up some pics this week and
let you all know.

Any one of you ever visits this part of the world? for work or
pleasure? Welcome all anyway!

Ravi

Only person I know who has been to India from this group would be Flying
Tadpole (Tim). He is here only sporadically at the moment but I'll let
him know you're here.

h. We get to sail 365 days in a year! Temperatures
soar to a 112 F in the peak of summers and winters are a pleasant 80 to
85!

We have about 25 to 30 boats on the water on the weekends. And that
includes a clutch of Optis, Enterprises, Lasers and the couple of
Yachts (Maxi 77) I had mentioned. Will load up some pics this week and
let you all know.

Any one of you ever visits this part of the world? for work or
pleasure? Welcome all anyway!

Ravi

Welcome Ravi,

Your weather and sailing sounds allot like Texas.
we have many lasers, stars, ect...here as well

Welcome to ASA..if your ever in Texas on business or even pleasure you
are two most welcome, with your wife to.

Is it true that there is two Indias, Hindu and Muslim?

Joe

"Joe" wrote
| Is it true that there is two Indias, Hindu and Muslim?



Dumb question, Joe. Let's talk about sailing. Not politics or religion. What does religion matter when it comes to sailing?


Cheers,
Ellen

I can think of two ways God enters into religion.

First, God sails an Ericson.

Second, anyone who has crossed an ocean and seen how
insignificant humans are on the scale of an ocean, will come
to believe in God.

and Third. Joe's question is not without interest.

"Ellen MacArthur" wrote

"Joe" wrote
| Is it true that there is two Indias, Hindu and Muslim?

Dumb question, Joe. Let's talk about sailing. Not politics or religion.
What does religion matter when it comes to sailing?
Cheers,
Ellen

Joe wrote:


Welcome Ravi,

Your weather and sailing sounds allot like Texas.
we have many lasers, stars, ect...here as well

Welcome to ASA..if your ever in Texas on business or even pleasure you
are two most welcome, with your wife to.

Is it true that there is two Indias, Hindu and Muslim?

Joe

Thanx Joe. I will take you up on your offer when I visit Texas! I did
visit Texas once. in 1997. Came to Dallas on work for just one day!

Ravi

Joe wrote:


Is it true that there is two Indias, Hindu and Muslim?

Joe

India is a multi culture pot! Hindus are a majority. Muslims comprise
of about 14% of the total population.

Ravi

Hi Ravi! I was so pleased to read your post.
So it is still the 'Royal' Madras YC.- that is nice because now that you
guys are independent I thought you would have done away with the 'Royal'
prefix!
I visited the Royal Madras YC in 1946 as an engineering officer on the 10000
ton cruiser HMS Glasgow which at the time was engaged in 'showing the flag'
around British territories around the Indian Ocean, following the end of the
war.
We would arrive and lay on a party aboard for local dignitaries and their
families. All took place on the quarterdeck under the shadow of the 6" guns.
The Royal Marine band would be playing during the evening.
.. The stern windlass was converted into a roundabout for the kids.
Our ship was very smart because as soon as the war in the Far East was
over we got rid off the grey and repainted her in the pre-war East Indies
fleet colours, white hull and yellow funnels. We floodlit her at night too.
Looked really good.
I have a photo of myself and a friend sitting on a jetty in Madras watching
a turtle swimming in the water.
We were based in Trincomalee and that is another place I would love to
return to, but sadly it is a war zone at present
Regards
Edgar


wrote in message
oups.com...
Sorry, I misunderstood the question. But in the process met an online
community of sailors! So I am happy.

Some of you wanted to know more about where I sail. I and my wife sail
in Chennai (formerly known as Madras) on the south eastern coast of
India. We have two sailing clubs here. One is the Royal Madras Yacht
Club (94 years old!) and one is the Tamilnadu Sailing Association (4
years old). We are members of both the clubs and sail from either.
Anyway both clubs are adjacent to each other.

We sail outside the harbour in the Bay of Bengal. General conditions
are 10 to 15 Ks of wind this time of the year. In another fortnight it
will go up to between 20 and 25 and we will be in for a season of
squalls. We will be having good swells too. About 2 to 3 metres. Not
much of tides though. We get to sail 365 days in a year! Temperatures
soar to a 112 F in the peak of summers and winters are a pleasant 80 to
85!

We have about 25 to 30 boats on the water on the weekends. And that
includes a clutch of Optis, Enterprises, Lasers and the couple of
Yachts (Maxi 77) I had mentioned. Will load up some pics this week and
let you all know.

Any one of you ever visits this part of the world? for work or
pleasure? Welcome all anyway!

Ravi

Edgar wrote:
Hi Ravi! I was so pleased to read your post.
So it is still the 'Royal' Madras YC.- that is nice because now that you
guys are independent I thought you would have done away with the 'Royal'
prefix!
I visited the Royal Madras YC in 1946 as an engineering officer on the 10000
ton cruiser HMS Glasgow which at the time was engaged in 'showing the flag'
around British territories around the Indian Ocean, following the end of the
war.
We would arrive and lay on a party aboard for local dignitaries and their
families. All took place on the quarterdeck under the shadow of the 6" guns.
The Royal Marine band would be playing during the evening.
. The stern windlass was converted into a roundabout for the kids.
Our ship was very smart because as soon as the war in the Far East was
over we got rid off the grey and repainted her in the pre-war East Indies
fleet colours, white hull and yellow funnels. We floodlit her at night too.
Looked really good.
I have a photo of myself and a friend sitting on a jetty in Madras watching
a turtle swimming in the water.
We were based in Trincomalee and that is another place I would love to
return to, but sadly it is a war zone at present
Regards
Edgar


Nice post Edgar. I can detect overflowing nostalgia! There's a cure.
Come on over. And I can promise you that at RMYC you can still find
excellent hospitality! And Madras is certainly not war zone.
Trincomalee is. But that is another country!

And I would love to see that photograph you have mentioned. And others
too, of this parts, if you have.

Rgds
Ravi