On Feb 19, 8:34*am, wrote:
On Tue, 19 Feb 2008 10:57:20 -0500, HK wrote:
Furuno has a transducer footprint calculator on its site:

http://tinyurl.com/2rk8p9

If you enter the beam angle of your transducer and the water depth, it
will calculate the "footprint," or diameter of beam, your transducer is
covering at the bottom.

Didn't they teach math and geometry when you were in grade school?

They were teaching geometry at the time when Harry's father was
boating across the Atlantic in a 20 boat. Harry had to be in New York
to welcome his father home along with the "fireboat welcome", so he
was unable to attend class.