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Old 04-01-2009, 03:16 AM   #21
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Aircraft and ships use lat/long- but us humble muddy feet types use a grid coordinate system.

Look at a US Geo map- the sheet is divided up into squares. the 2 digits horizontally, and the two digits vertically, give you a 4 digit square. Divide that square again, and a 6 digit coordinate. divide again, 8 digit coordinate. Taught by Army and USMC for Land Navigation. An 8 digit will get you within 10 meters. You can even do 10 digit, which cuts it down to a meter, but hard to do.

You need US Geodetics survey maps (can buy them on line), a good compass (not a dime store type) ability to estimate distance covered when walking (pace count- mine is 165 single paces to 100 meters) know the magnetic declination for your area (compass points to magnetic north pole, not the real north pole- here difference is 9 degrees West) AND- know how to use a map and compass. Get a copy of Army Field Manual FM 3-25.26, or hunt it up on line.

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Old 04-01-2009, 03:21 AM   #22
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Once you've mastered your pace count, you can get these cool bead thingies that you pull down every 100 meters. They have them now so that each bead is a skull. Grunt swag.

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Old 04-01-2009, 09:04 PM   #23
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Had a set of pace beads. Made my new Sgt nervous- he thought I was saying my rosary!

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Old 04-01-2009, 09:16 PM   #24
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I've wanted to get into it for a few years now, but there has always been something that has bumped the GPS Map 60CSx off of my shopping list.

There is a sizable Jeeping/caching community in my area. As such, there are a lot of caches in rough areas that require a SWB 4wd and some balls to get to.

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Old 04-01-2009, 09:19 PM   #25
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Quote:
Originally Posted by Benning Boy View Post
Once you've mastered your pace count, you can get these cool bead thingies that you pull down every 100 meters. They have them now so that each bead is a skull. Grunt swag.
Butt beads are for poseurs. Real soldiers can count to ten.

I made a set out of 550 and some red skull beads that I found at a bead shop back home. They looked badassed, but the beads would break when they caught the parachute harness on the opening shock.

My average pace count is still 55 paces/100 meters. I still check it every so often, when I can find a measured 100m length.
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Old 04-01-2009, 09:38 PM   #26
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You need...[to] know the magnetic declination for your area (compass points to magnetic north pole, not the real north pole- here difference is 9 degrees West)
That's another question I was going to ask. When a map says Magnetic Declination = 9° West, does that mean that true north is 9° west of magnetic north, or the other way around?
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Old 04-01-2009, 11:28 PM   #27
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That's another question I was going to ask. When a map says Magnetic Declination = 9° West, does that mean that true north is 9° west of magnetic north, or the other way around?
The other way around - when magnetic declination is 9° west, magnetic north is 9° west of true north. Helps to think of true north as the reference, and the declination is the angle from true north to magnetic north.
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Old 04-02-2009, 03:50 AM   #28
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Here ya go. Magnetic declination - Wikipedia, the free encyclopedia

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Old 04-02-2009, 04:03 AM   #29
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Not being able to read a map or use a compass is what happened to that NG unit that got the gd women millions because they got lost and didn't know where to go or what to do. That ordeal still pisses me off. They all got medals for being ATE THE EFF UP LIKE A SOUP SAMMICH. When I was in a unit that used it I would give classes on it in the back of our motorpool. I would give classes on weapons, land nav, and tactical reappropriation, and commo gear, Preventive Maintenance Checks and Services (PMCS). I was not the most squared away solider (mainly because of my mouth) I told it like it was and that was not always a good thing. I told more than a few E-5 just there to go and stick it. I had one squad leader that was so ate the hell up I told him if we ever went to combat he was going to die the first day.

I have lost some skills with a map and compass but I can still read it and tell you where I am going or where I have been. A lot of nav is being able to read the terrain on the map and picture it in your head then convert that to real world.

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