Thread: Sonar quiz #10

Originally Posted by Shine Runner

Ok I like that thought, but my mind just won't wrap around that idea. This is 2d sonar and it says cursor is at 102' from GPS puck or unit, right? That would be about 34 yards which is easier for me to guesstimate on the water. I didn't know 2d sonar would read that far in water this shallow. What am I missing? Also the bearing info, is that bearing from GPS to target which would tell you the left or right and I am assuming it would always be behind the GPS for quick reference. Some times I just make things more confusing.

Your statement in blue above is correct....

No matter which way the boat is moving ("course")...nor which way the boat is facing ("heading")...:

*North (on the Earth's face) is always considered as 0/360°
*East (on the Earth's face) is always considered as 90°
*South (on the Earth's face) is always considered as 180°
*West (on the Earth's face) is always considered as 270°

The "Bearing (°) to" data box (during an "Active Cursor" function)...is referring to how many degrees (°) from North (on the Earth) is the direction of the "Active Cursor"...

In this case of my screenshot in the OP...the "Active Cursor" was 293° from North (on the Earth's face)...



Rickie