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Questions tagged [navigation]

This tag is for all questions about outdoor navigation with maps, compasses or mobile devices equipped with sensors for satellite based positioning systems.

3 votes
6 answers
339 views

How to find true north without compass, sun, and stars?

Is there any reliable method from nature to find north without the stars, sun, or compass? I have read a little bit on this subject, and a lot of it seems to be controversial. Let's say I am lost in ...
1 vote
0 answers
97 views

Increase Accuracy of Magnetic Compass

How to increase the accuracy magnetic compass? Is there a good way using multiple ones? I searched the Internet and Philip Werner suggested at Section Hiker web: use the most current declination data ...
6 votes
1 answer
3k views

What are the differences between prismatic, lensatic, mirrored, and optical sighting compasses?

Background I am looking at compasses for backpacking and camping, and have come across more compass varieties than I had ever thought possible. Four terms that often come up together are "...
108 votes
5 answers
14k views

Why would one aim off when navigating with a map and compass?

Sometimes while navigating with map and compass, the advice is to aim off i.e. to aim either to the left or right of the intended destination, as opposed to straight for it. Why and when would one ...
12 votes
4 answers
3k views

Are there types of compass other than the regular magnetic one and the gyrocompass?

Today I learned about the existence of the "gyrocompass". A gyrocompass is a type of non-magnetic compass which is based on a fast-spinning disc and rotation of the Earth (or another planetary body ...
32 votes
5 answers
10k views

What advantage does the what3words coordinate system have over other, traditional systems?

I recently came across the what3words coordinate system in an outdoor magazine. The system divides the world into squares of 3 m x 3 m. Each square is then named with a combination of three (as far as ...
8 votes
4 answers
5k views

Can a compass be thrown off by its surroundings?

Would it be possible for a compass be affected by its surroundings, such as a large iron deposit or other rocks to the point where it is not working correctly? I am not talking about declination but ...
10 votes
4 answers
2k views

Are there any examples of orienteering (off-trail) route-finding software?

Route-finding software is common nowadays. For example, you can use Google Maps to navigate from one town to another. It's even possible to use apps like Gaia GPS to plan a route between two points ...
31 votes
2 answers
11k views

Will a compass work underground or underwater?

Because they rely on radio signals, GPS units generally do not work underground or underwater, but what about a plain ol' magnetic compass? Are the magnetic fields of earth present at all depths? ...
16 votes
2 answers
2k views

Thinking about a road trip out West

My wife and I are thinking of taking a road trip from northwest Ohio to "out west" - Colorado, Arizona, New Mexico, Montana, etc. I've never been farther west than Indiana, so it's a whole new ...
4 votes
1 answer
212 views

Free Online Text Books For Sailing

The FAA has a website to download free text books to learn all the things required to become a pilot. https://www.faa.gov/regulations_policies/handbooks_manuals/aviation/ Is there a similar website ...
1 vote
0 answers
90 views

What are the slope determination criteria in the elevation profile of Google Earth? Is it based on rise over run or rise over hypotenuse? [duplicate]

I occasionally use google earth and notice that the slope percentage is never cross 100%, if slope percentage is determined by rise over run method the 100 percent value is equal to a 45-degree slope ...
26 votes
22 answers
17k views

As of 2019, why do mountaineering courses still teach how to use a paper map?

I've been looking into learning how to mountaineer and noticed that the local mountaineering society still requires a training in navigation as part of the prerequisites for most of their basic ...
3 votes
3 answers
479 views

Why is nautical navigation still exclusively taught with paper charts?

I have recently read some books and courses on nautical navigation. All of these start teaching how you use paper based navigation charts, and teach the usage of protractors and such. There is even ...
23 votes
8 answers
11k views

What format should I use to report my location to emergency responders?

Suppose I am out in the wilderness and an emergency arises. I have an accurate fix on my location (from GPS, map and compass, astronomical observation, etc...). I manage to get in touch with ...

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