Dave wrote:
"Armond Perretta" said
Dave wrote:
Armond wrote:

Any person who
regularly operates ... without radar in ...
decreased visibility (and I include ... darkness in this
category) is ... taking the position that "its up to the
other guy to avoid me."

As to darkness, nonsense. That's why vessels have running lights.

When was the last time you saw a rock with running lights ... ?

When was the last time you saw a submerged [sic] rock on radar? ...

Who said anything about "submerged"?

--
Good luck and good sailing.
s/v Kerry Deare of Barnegat
http://kerrydeare.tripod.com

On 24 Jan 2004 09:18:25 -0800, (Parallax)
wrote:


Any other useful things?

Portland Plotter - after one of my coastal navigation students showed
me one I put away the parallel rules. I still like a Douglas
protractor, but I use the parallel rules as an antique. The Plotter
is my mainstay.

After I demonstrate all 3, almost all of my students opt for the
Portland Plotter.

Jack

On 24 Jan 2004 09:18:25 -0800, (Parallax)
wrote:


Any other useful things?

Portland Plotter - after one of my coastal navigation students showed
me one I put away the parallel rules. I still like a Douglas
protractor, but I use the parallel rules as an antique. The Plotter
is my mainstay.

After I demonstrate all 3, almost all of my students opt for the
Portland Plotter.

Jack

then how come you are such a dumb squat when it comes to radar?

I probably spend more time as
radar observer, on my week off, than you do in a year.

indeed, you didn't even know you need nearly flat water to see low rocks with
radar, as witness your statement below:

nor
uncharted rocks low in the water with any seas running,

Without seas running, may. With seas running, still may .... might pick
up added sea return in a specific area

then how come you are such a dumb squat when it comes to radar?

I probably spend more time as
radar observer, on my week off, than you do in a year.

indeed, you didn't even know you need nearly flat water to see low rocks with
radar, as witness your statement below:

nor
uncharted rocks low in the water with any seas running,

Without seas running, may. With seas running, still may .... might pick
up added sea return in a specific area

ROFLMAO I see your self enforced absence did nothing to improve your
intelligence or reading comprehension.

JAXAshby wrote:
then how come you are such a dumb squat when it comes to radar?

LOL


I probably spend more time as
radar observer, on my week off, than you do in a year.


indeed, you didn't even know you need nearly flat water to see low rocks with
radar, as witness your statement below:


nor

uncharted rocks low in the water with any seas running,

Without seas running, may. With seas running, still may .... might pick
up added sea return in a specific area



ROFL You're so stupid, you can't even understand a simple sentence.
...... much less the ability of a radar to see "low rocks" without having
flat water.

ROFL Go back into hiding Jaxshole ... you're too stupid, uninformed,
inexperienced, to be out in public.
Nuff said, won't waste anyone's time further on your idiot post.

otn

ROFLMAO I see your self enforced absence did nothing to improve your
intelligence or reading comprehension.

JAXAshby wrote:
then how come you are such a dumb squat when it comes to radar?

LOL


I probably spend more time as
radar observer, on my week off, than you do in a year.


indeed, you didn't even know you need nearly flat water to see low rocks with
radar, as witness your statement below:


nor

uncharted rocks low in the water with any seas running,

Without seas running, may. With seas running, still may .... might pick
up added sea return in a specific area



ROFL You're so stupid, you can't even understand a simple sentence.
...... much less the ability of a radar to see "low rocks" without having
flat water.

ROFL Go back into hiding Jaxshole ... you're too stupid, uninformed,
inexperienced, to be out in public.
Nuff said, won't waste anyone's time further on your idiot post.

otn

no you don't see, no matter what you may feel you think.



ROFLMAO I see your self enforced absence did nothing to improve your
intelligence or reading comprehension.

JAXAshby wrote:
then how come you are such a dumb squat when it comes to radar?

LOL


I probably spend more time as
radar observer, on my week off, than you do in a year.


indeed, you didn't even know you need nearly flat water to see low rocks
with
radar, as witness your statement below:


nor

uncharted rocks low in the water with any seas running,

Without seas running, may. With seas running, still may .... might pick
up added sea return in a specific area



ROFL You're so stupid, you can't even understand a simple sentence.
..... much less the ability of a radar to see "low rocks" without having
flat water.

ROFL Go back into hiding Jaxshole ... you're too stupid, uninformed,
inexperienced, to be out in public.
Nuff said, won't waste anyone's time further on your idiot post.

otn

no you don't see, no matter what you may feel you think.



ROFLMAO I see your self enforced absence did nothing to improve your
intelligence or reading comprehension.

JAXAshby wrote:
then how come you are such a dumb squat when it comes to radar?

LOL


I probably spend more time as
radar observer, on my week off, than you do in a year.


indeed, you didn't even know you need nearly flat water to see low rocks
with
radar, as witness your statement below:


nor

uncharted rocks low in the water with any seas running,

Without seas running, may. With seas running, still may .... might pick
up added sea return in a specific area



ROFL You're so stupid, you can't even understand a simple sentence.
..... much less the ability of a radar to see "low rocks" without having
flat water.

ROFL Go back into hiding Jaxshole ... you're too stupid, uninformed,
inexperienced, to be out in public.
Nuff said, won't waste anyone's time further on your idiot post.

otn

On 28 Jan 2004 02:05:18 GMT, (JAXAshby) wrote:

then how come you are such a dumb squat when it comes to radar?

I probably spend more time as
radar observer, on my week off, than you do in a year.

indeed, you didn't even know you need nearly flat water to see low rocks with
radar, as witness your statement below:

That may have been true in the 40's and 50's. It's not true anymore.
There are all sorts of techniques modern radars use to find things like
low rocks in sea clutter, from simple ones like scan averaging and
doppler filtering to complex adaptive filters which model the sea
clutter and remove it.

Steve