All Questions
Tagged with navigation sea
4
questions
8
votes
5
answers
1k
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Did any lighthouses provide directional navigation signals?
Rather than shining in all directions, lighthouses usually produce a directed beam of light that continuously sweeps in a circle.
This allows:
the light to be more concentrated and so appear brighter....
- 661
12
votes
3
answers
371
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What Navigation Aids can I make on an island with only a knife?
In a recent discussion about navigating from a deserted island, it was suggested that if I have a knife and natural resources I could create my own navigation aids. In this instance I was planning to ...
- 30.4k
16
votes
4
answers
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How to estimate current speed and direction while swimming at sea?
In an episode in the tv series "I shouldn't be alive", crew members of a yacht racing team got caught in a violent storm and found themselves stranded in the Gulf of Mexico after their boat capsized. ...
- 1,057
19
votes
2
answers
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How to estimate distances while at sea?
While kayaking or swimming out in the open waters, it is quite important to be able to judge distances accurately before attempting to get from one point to another, such as from island to island. ...
- 1,057