Lights
 

1 pt each

What is a range, and how are two lights used to establish a range?

Why would three lights be used?

What are the factors that determine a single light's visible range?

How are red sector in lights used?

Why are lighthouses all designed differently?

At night, what danger should a helmsman be aware of when
steering for a lighted bouy that is being used as a way point?

What is a Morse Code "A" light mean?

Lights
 

1 pt each

What is a range, and how are two lights used to establish a range?

To mark a direction, usually a channel, at night. One higher than the other,
then line 'em up.


Why would three lights be used?

Don' t know.

What are the factors that determine a single light's visible range?



How are red sector in lights used?

Keep clear.

Why are lighthouses all designed differently?

Identify location by color scheme or other attributes.

At night, what danger should a helmsman be aware of when
steering for a lighted bouy that is being used as a way point?

don't hit it or the jackass tied to it using his BBQ; keep to the appropriate
side.


What is a Morse Code "A" light mean?

safe water at center of a channel

Lights
 

Subject: Lights
From: (Bobspirt)
Date: 06/30/2004 07:35 Pacific Standard Time
Message-id:

1 pt each

What is a range, and how are two lights used to establish a range?

To mark a direction, usually a channel, at night. One higher than the other,
then line 'em up.

Day or night markers, used to mark the preferred line for a marked channel (may
or may not be centerline).


Why would three lights be used?

Don' t know.

Never seen this, but would guess it might used to show the edges of a narrowing
channel, to a certain point.


What are the factors that determine a single light's visible range?

G will leave this for someone else.



How are red sector in lights used?

Keep clear.

Why are lighthouses all designed differently?

Identify location by color scheme or other attributes.

At night, what danger should a helmsman be aware of when
steering for a lighted bouy that is being used as a way point?

don't hit it or the jackass tied to it using his BBQ; keep to the appropriate
side.


What is a Morse Code "A" light mean?

safe water at center of a channel

This is on the first buoy (or last, depending on your direction) you will
encounter at major ports. Can NORMALLY be passed on either side, but this is
not always true .... check your chart and local regs....called the "Sea Buoy"

Shen

Lights
 

Shen44 wrote:


Why would three lights be used?

Don' t know.


Never seen this, but would guess it might used to show the edges of a narrowing
channel, to a certain point.

Don't think that's what he's looking for....

What is a Morse Code "A" light mean?

safe water at center of a channel


This is on the first buoy (or last, depending on your direction) you will
encounter at major ports. Can NORMALLY be passed on either side, but this is
not always true .... check your chart and local regs....called the "Sea Buoy"

Shen

Not the only placed you could see this buoy, but the place most will
encounter it.

otn

Lights
 

Bart Senior wrote:

1 pt each

C'mon, I want more than one measly point!



What is a range, and how are two lights used to establish a range?

A range is two markers that should be kept in line with each other to
follow a channel, like looking down a gun sight. The upper light is the
further marker.

Care should be taken when following a range to know the marks for
*leaving* the range, I have seen plenty of range markers on dry land.




Why would three lights be used?

?? Dunno, maybe to mark a danger bearing?


What are the factors that determine a single light's visible range?

The height and the brightness




How are red sector in lights used?

To mark a danger zone or a "no-approach" zone.


Why are lighthouses all designed differently?

You mean why do they have different colored & patterned stripes etc on
them? So you can tell which is which, and thus where you are, if your
GPS is broken! However many lighthouses do have the same colors or
pattern.


At night, what danger should a helmsman be aware of when
steering for a lighted bouy that is being used as a way point?

Be wary of hitting the darn thing. Also, in some places, be wary of
hitting unlit markers along the same channel, or old out-of-service
marks. It can be a real PITA.


What is a Morse Code "A" light mean?

Sea buoy, the outermost channel marker entering a larger port. Small
sea channels won't have this.

Good questions Bart. Thanks

Fresh Breezes- Doug King

Lights
 

DSK wrote:

Bart Senior wrote:


1 pt each


C'mon, I want more than one measly point!



What is a range, and how are two lights used to establish a range?


A range is two markers that should be kept in line with each other to
follow a channel, like looking down a gun sight. The upper light is the
further marker.

Care should be taken when following a range to know the marks for
*leaving* the range, I have seen plenty of range markers on dry land.




Why would three lights be used?


?? Dunno, maybe to mark a danger bearing?


What are the factors that determine a single light's visible range?


The height and the brightness


To be more precise, the height determines the geographic range while
visible range is limited by conditions as well as luminosity and colour.


Cheers (call me Nav)

Lights
 

Nav wrote:

(call me Nav)

There are those on this ng who would call your Nav but you didn't
give his/her phone number.

--
Flying Tadpole

-------------------------
Break Away, Sail Away and putz away
now at http://music.download.com/internetopera

Lights
 

Nav wrote:

To be more precise, the height determines the geographic range while
visible range is limited by conditions as well as luminosity and colour.

Very good. But you jumped ahead, when you mention geo range you should tell
about luminous range.


Cheers (call me Nav)

OK, Navvie

Fresh Breezes- Doug King

Lights
 

5 points to you Bob.

Bobspirt wrote in message
...
1 pt each

What is a range, and how are two lights used to establish a range?

To mark a direction, usually a channel, at night. One higher than the
other,
then line 'em up.

How are red sector in lights used?

Keep clear.

Why are lighthouses all designed differently?

Identify location by color scheme or other attributes.

At night, what danger should a helmsman be aware of when
steering for a lighted bouy that is being used as a way point?

don't hit it or the jackass tied to it using his BBQ; keep to the
appropriate
side.


What is a Morse Code "A" light mean?

safe water at center of a channel

Lights
 

Good descriptive answers Doug, but not quick enough for points.

Not enough information for the one below. No points awarded for it yet.
Care to expand on it?

DSK wrote in message
...
Bart Senior wrote:

1 pt each
What are the factors that determine a single light's visible range?

The height and the brightness