Links
for river currents and wind speed
forecasts
Why We Sail
What Does It Take to Beat the
Current?
Summary of Winds
Decoding the Winds
Navigation charts
Estimating Linear Speeds of the
Currents
GPS
tracks
September 9, 2012
street map
satellite map
speed map
September 3, 2012
street map
satellite map
speed map
August 26, 2012
street map
satellite map
speed map
August 17, 2012
street map
satellite map
speed map
August 11, 2012
street map
satellite map
speed map
August 1, 2012
street map
satellite map
speed map
July 21, 2012
street map
satellite map
speed map
June 30, 2012
street map
satellite map
speed map
June 26, 2012
street map
satellite map
speed map
September 4, 2011
street map
satellite map
speed map
August 27, 2011
street map
satellite map
speed map
August 21, 2011
street map
satellite map
speed map
August 16, 2011
street map
satellite map
speed map
August 13, 2011
street map
satellite map
speed map
August 11, 2011
street map
satellite map
speed map
August 7, 2011
street map
satellite map
speed map
August 6, 2011
street map
satellite map
speed map
July 30, 2011
street map
satellite map
speed map
July 18, 2011
street map
satellite map
speed map
July 14, 2011
street map
satellite map
speed map
June 22, 2011
street map
satellite map
speed map
June 13, 2011
street map
satellite map
speed map
2010
September
11 , 2010
street map
satellite map
speed map
September
5 , 2010
street map
satellite map
speed map
August
16, 2010
street map
satellite
map
speed map
August
6, 2010
street map
satellite map
speed map legend
July
24, 2010
street map
satellite map
speed map
July
17, 2010
street map
satellite map
June
27 , 2010
street map
satellite map
June
17, 2010
street map
satellite
map
2009 and earlier
September 2007
July
8, 2009
satellite map
street map
speed map
August
9, 2009
satellite map
street map
speed map
August
29, 2009
satellite map
street map
speed map
September
6, 2009
satellite map
street map
speed map
September
13, 2009
satellite
map
street map
speed map

Mystery of the misplaced tracks
solved.
|
|
Sailing at the Point
A Diary of Life in Downtown
Pittsburgh
John D. Norton
http://www.pitt.edu/~jdnorton/sail/
jdnorton@pitt.edu
Photo. Thanks to Les O'Riley
The summer of 2009, Eve and I realized a little dream that first
arose when we became downtown residents of Pittsburgh. We are
surrounded by some of the most spectacular waterways in the world.
Wouldn't it be fun to hop on a bike, pedal over to a small sailboat at
the river's edge and launch into the water? What an extraordinary mix
of downtown living and riversports?!
Starting that summer, that is what we have been doing. It proved to
be harder than we thought to realize that little dream. But it was
worth the effort. My little blog here reports what happened and what is
happening.
I encourage everyone to think about sailing on the rivers. It is a
very different experience from all other forms of boating. (See Why We Sail.)
Before you throw yourself in a sailboat onto the rivers, I do want
to alert you that this is not something to be done lightly. The rivers
can be risky places. You do need to know what to do if there's no wind,
or too much wind, or if the wind becomes erratic, or when a barge
looms, or if the current is too strong. (For that last one, the answer
is simple. Stay out of the water!)
If you are an experienced sailor, or can make contact with one,
there's no reason to shy away from the rivers. Just remember that what
can go wrong will, so be prepared. If you want to hear more, email me
at jdnorton@pitt.edu
After a few sails on the rivers, I'm now beginning to see what
conditions are good for sailing:
-- My original strategy had
been to dock the boat downstream of the Point and always sail upstream.
That way, if the worst happens and the wind dies completely, I will
drift home, even if slowly. And, for the very worst, I do carry a
paddle, firmly tied to the deck. However for the many days with little
current, the effect of the current is so small as to be negligible.
-- Sailboats work best when
there is the greatest difference between the windspeed and water speed.
Therefore the optimal winds run against the river current, if there is
a current. Then you run before the wind to get upstream. To come back
downstream, you tack into the wind, with the current aiding you. For
the rivers around Pittsburgh, that means winds from the West and the
North are best. Indeed If there is a noticeable current, I've decided
not to sail unless I have them. If there's no current or only a very
slight one, then any sustained wind is all that is needed.
For more on this, see What Does
It Take to Beat the Current?
-- There are some big, fast
moving things on the rivers that you do need to keep away from.
(Barges!) Make a habit to scan for them constantly; they approach
faster than you first expect; and know where the channels are that they
move in. As long as there is wind, even a slight breeze, a sailboat is
powered and can move. Don't sail on those few days when the air is
calm. And do always carry a paddle if you the wind dies
unexpectedly.
Where are the channels in which the barges navigate? See Navigation charts.
What clearance do I have under the bridges for my mast? Everywhere,
there is at least 40 feet of clearance. That is ample for any sailboat
likely to be sailed on the rivers. For sketches and measurements, see
Navigation charts.
-- I keep a close eye on the
river currents through the US Army Corps of Engineers' data, as
presented on the US Geological Survey website. I like to see flows
below 10,000 cubic feet per second on all the rivers. For wind speeds I
like to see winds forecast over 8mph. 5 mph is a minimum since with
that forecast, on the water, there will be awkward periods of calm.
Here are useful links for river currents
and wind forecasts.

|
|
2012
Speed
September 9, 2012
Perfect Sailing
September 3, 2012
From the East
August 26, 2012
Three Professors
August 17, 2012
Relief August 11, 2012
Caught August 1, 2012
No Wind July 21, 2012
Captain Eve June 30, 2012
Windy Day June 26, 2012
2011
The Deluge September 4, 2011
On the Edge of the Hurricane
August 27, 2011
Baseball Game Traffic
August 21, 2011
Gotham City
August 21, 2011
Save the Fastest for Last
August 16, 2011
A Gentle Sail
August 13, 2011
Then There Were Two
August 11, 2011
The Big Boat on the Allegheny
August 7, 2011
What? A Sailboat?!
August 6, 2011
The Big Boat
July 30, 2011
Rivers and Lakes
July 30, 2011
Flying
July 18, 2011
Winds Every Which Way
July 14, 2011
Chasing the Majestic
June 22, 2011
First Sail
June 13, 2011
Floods
Early June, 2011
2010
Winds from the South East
September 11, 2010
Labor Day Weekend
September 5, 2010
Clockwise
August 16, 2010
Circumnavigating Brunot Island
August 6, 2010
Wind. Wind. Wind.
July 24, 2010
Storms and Southerlies
July 17, 2010
Becalmed
June 27, 2010
First
Sail of the Summer
June 17, 2010
2009
Further up the Monongahela
September 13, 2009
Against the
Current, Against the Wind
September 6, 2009
Illusions
August 29, 2009
Further Up the Allegheny
August 9, 2009
Three Rivers
July 8, 2009
Up the Allegheny
June 27, 2009
No Sail
June 21, 2009
The Point is Gained
June 14, 2009
Worst Day
May 16, 2009
Groundhog Day
May 13, 2009
Starting
Possible Sites for a Sailboat Facility
The Next Page: The wind and the Point... A
Downtown sailor's log. Pittsburgh Post-Gazette, November 15,
2009. link pdf jpeg
Ever wonder what a philosopher of science might have to say about sailing? See my "Paradoxes of Sailing." |