Is it used for triangulating sonar signals and plotting a position.
Guess that mysterious item
- Thread starter AlanL
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Well i don't want let this linger so if there are no objections I'll give to Stile442.
It's called a Maneuvering Board, and it's used to plot the relative position of other vessels. Once you have three or more positions taken several minutes apart for another vessel, you can determine its relative course and speed, then using your own course and speed you can use these sheets to calculate the other vessels true course and speed, and thus determine how close your vessels will come each other, and when. It can also be used to determine true wind from observed wind in a similar fashion, which is useful for manouvering with aircraft.
These functions are all automatic when using digital radars and plotters, but the Coast Guard loves having backups!
It's called a Maneuvering Board, and it's used to plot the relative position of other vessels. Once you have three or more positions taken several minutes apart for another vessel, you can determine its relative course and speed, then using your own course and speed you can use these sheets to calculate the other vessels true course and speed, and thus determine how close your vessels will come each other, and when. It can also be used to determine true wind from observed wind in a similar fashion, which is useful for manouvering with aircraft.
These functions are all automatic when using digital radars and plotters, but the Coast Guard loves having backups!
Thanks DavidFS! I'm not going to be around today so if someone can post a picture before I get home tonight its all yours 
Ok. here we go.... Sorry for the late post
The innards of a piano? The little percussion part..
Here's mine!
Looks like a controller of some sort. But I have no clue what it controls.
You guys pretty much got it. It's a repeater of a fire detection system.
Either of you guys can go next !
Either of you guys can go next !
Go ahead, Eeyore. I'll be out most of the evening.
Projector or T.V.
Is that a supposed "right angle lens" for a camera?
Phil
Phil
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