Depth Finder Bottom Coverage-FYI

[nwright]

60° Cone Angle 20° Cone Angle
Take 1/2 cone angle times 3.14, divided by 180 gives the tangent. Tangent times depth, times 2, equals cone diameter.

Depth (ft) Dia. Of Coverage (ft) Depth (ft) Dia. Of Coverage (ft)

5 5.20 5 1.70
10 10.40 10 3.40
15 15.60 15 5.10
20 20.80 20 6.80
25 26.00 25 8.50
30 31.20 30 10.20
35 36.40 35 11.90
40 41.60 40 13.60
45 46.80 45 15.30
50 52.00 50 17.00
55 57.20 55 18.70
60 62.40 60 20.40
65 67.60 65 22.10
70 72.80 70 23.80
75 78.00 75 25.50

 

[SNUFFY]

mr. Nwright is the guy to teach the class on Sonar use/interpretation....I believe I remember he has been tutoring some of our Pros.

 

[nwright]

Was trying to avoid typing this in a post by copying and pasting from a file and the spacing is turned out different. Will repost with proper spaces.

 

[nwright]

Can't post file or type in post because spaces are deleted.

A 20 degree cone angle will cover as follows: 5 ft depth will cover a diameter of 1.7ft, 10 ft depth will cover a diameter of 3.4 ft, 15 ft depth will cover 5.1 ft, 20 ft depth will give a bottom diameter of 6.8 ft, etc. Just add 1.7 feet to the diameter for every 5 ft increase of depth.

A 60 degree will cover 5.2 feet at a depth of 5 feet, 10.4 feet at a 10 ft depth, etc. Just add 5.2 feet for every 5ft increase of depth.

 

[polo-dog]

Thanks for the info nwright. I'd forgotten the calculation. I think that I saw it in a manual once.

 

[BackOnTheWater]

That's excellent info! Thanks Mr. Wright! I look forward to hearing more from you!

 

[finbully]

What a great addition that would be for our screen overlay data. Seems like the calculation could be handled internally within the unit.

Lowrance, Humminbird, Bottom Line - got your ears on....

I'm going to make a cheat sheet for my rig, thanks for bringing this to our attention.

 

[DHaun]

Good stuff - Thanks for posting it!

 

[H-1]

Thanks never really did know how that worked.