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

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

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

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

1 pt each

Why would three lights be used?

Don' t know.

This is a tough one. I'll reveal the answer.

It it fairly common to find three lights constituting
two ranges, at the bend of a channel. The first
range is the normal type.

The second range uses one of the first lights and
is a "look behind you" range. After the bend in the
channel.

Does that make sense?

I mentioned it because it is something some of my
student have had trouble with in chart work

However, my question was, perhaps, confusing.

Perhaps I should phrased the question.

How can three lights be used to establish two ranges?

Bart