Navigation Class Question

J

jdshep

Member
exMember
Joined
Jan 26, 2006
RO Number
20051
Messages
241
Subject: Range Dayboards
I see rectangle board with
green-white-green
text KGW on sample
Next one
white-green-white
text KWG
next one
white-black-white
text KWB

Can I assume K means something on the sample chart,
middle letter marks color of two outside stripes primary
right letter mmarks center stripe color secondary
There are 12 color samples on US aids to Navigation plate 1
it seems all are marked this way.
I cannot find this anywhere so your help is appreciated
John d
 
The K indicates a Rectangular Range Dayboard. M would indicate an Octagonal Dayboard, typically used to indicate mid-channel. The range dayboards are set so that a boater entering an inlet or harbor can line them up to find center channel.
 
Les,
Since they are day board i would line up would a green-white-green (KGW) tell me something different then a white-green-white (KWG) ? Port edge channel returning? or?
Thanks for the help
John d
 
the dayboards for any inlet, for example, would be aligned using the center colors. If you are out of alignment, you'll see the rear side colors to the port or starboard of the front one. They usually mark the center of the entrance. However, there are not very many of them out there. Most entrances just use range lights and have the channels clearly marked with buoys.
 
Les,
Thanks, on the Cheboygan Rive when entering from Lake Huron there are two lights which give you center alignment of the channel they work nice when coming home after dark. On a trip up the St Mary's river to Sault Ste Marie Michigan last fall I saw many day board as that is a a shipping channel from Lake Superior to points below.
John D
 
The white-green-white would be a DIFFERENT range than the green-white-green one. Usually when you're out there it's pretty self-explanatory. At night you might find one range with green lights, the next with white, the next with red, etc. You line up the range markers with the same color scheme.
 
Did you get your questions answered, John? By the way, if you have taken any of the tests, you are going to have to take them over again. It wasn't saving your scores to the databasae.
 
Les,
I have not taken any tests yet as I was delayed a little waiting for my navigation tools.
On Day boards, I understand red green or black have nothing to do with starboard, port or danger, if i see a white-green-white I should line up with another white-green-white ahead keeping the stripes aligned by color to give me mid channel, and i understand the next set of day boards might be the reverse green-white-green or something else so we do not align the wrong marks.
It may be a while before i do the test as I am going up by my boat for a week or 10 days and may not get much study time while away.
The course is well done and easy to learn from, however my brain does not want to store as much as i need so i have to do everything several times before I get the brain to store the input.
I think the brain needs a upgrade.
John d

quote:
Originally posted by Les Hall

Did you get your questions answered, John? By the way, if you have taken any of the tests, you are going to have to take them over again. It wasn't saving your scores to the databasae.

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