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Depth Offset Menu ...
We've had a few threads discussing adjusting the Depth Offset Menu "+" to account for how far a TM xducer is immersed in water ...
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Explain the scenario where a negative (-) Depth Offset adjustment could be beneficial ...
Rickie
I would think when its more important to know how much water is under the keel of a sailboat or bottom of a boat rather than actual water depth.
I don't have a sail boat,but like to no how close to the bottom my motor is
I agree with the 2 gentlemen above. In fact I just set the keel offset last night on my Garmin.Quote:
Originally Posted by rnvinc
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Agree also. Neg when you have something to protect (keel, skag, motor) below where the xducer is mounted. Positive when xducer is below like the waterline etc and wanting to know actual depth. Keel offset on Garmin. I do remember this adjustment making my 500 series HB go nuts. HB kept telling me it was unique to me, but BPS and Gander said they had a ton of returns for the same thing.
I would think for accuracy of your maps, for me in high water on a lake, if you knew how high the lake was, you would set it to have your mapping set by putting the high water in the minus. For example if the lake were 3’ high, put minus 3 ft in the setting. I never worry about the keel or prop in the water depths. Normally on the lakes I fish, I don’t change anything.
This setting is used to off set + or - when the actual sonar depth is not reading right. In other words if you are in 10' water and your sonar is reading 9' you can use the depth offset to correct it.
Depth Offset
(Advanced) Settings:-10.0 to +10.0 feet or -3.0 to 3.0 meters [International models only], Default = 0.0, or Off
Depth Offset will adjust the digital depth read out to indicate depth from the waterline or boats keel. Enter a positive vertical measurement from the transducer to the waterline to read the depth from the waterline. Enter a negative vertical measurement from the transducer to keel to read the depth from the keel.
Some time ya just don’t read the question right.:Rofl Seeing as how the question is about setting a minus, if the lake is down you set a minus amount to compensate for your maps.
There's a difference between depth offset and water level offset.
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I would use negative to provide a buffer for depth from keel of boat or skeg. I hate jumping in to take measurements though....LOL
Navigating shallow water.
Good discussion guys ...
Rickie
Humminbirds also have a depth alarm to warn when you are getting into too shallow of water when boating. I would think other brand sonars have this also.:twocents
Depth Alarm Settings:
Off, 1 to 100 feet, or 0.5 to 30 meters [International Models only]; Default = Off
Depth Alarm sounds when the depth becomes equal to or less than the menu setting.
Super how did you set it on your garmin? I read the manual and went to settings then my vessel and the option is not there. I have the Striker Plus 9sv. ThanksQuote:
Originally Posted by SuperCorona
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It is called Keel Offset on Garmins. Go to SETTINGS to MY VESSEL to KEEL OFFSETQuote:
Originally Posted by sds888
Thanks I went there and the option is not there.Quote:
Originally Posted by TeeDee
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Sorry, I am running a 93sv chirp. Perhaps there are different paths and options between the two since yours is a higher end unit than mine. If someone else doesn't chime in then I would be on the horn to CS, you will get help there quickly.
Apologies sds888, I was thinking of the 7600 series when I replied IDK why. I would think that these had the same options with the same path. CS if you don't hear from someone else.
I would have answered the same as TeeDee. I checked the online manual for the Striker Plus and it says the same thing.Quote:
Originally Posted by sds888
Quote:
Originally Posted by TeeDee
Thanks. I checked the manual and it says the same thing. Here is what comes up for me. Attachment 297488Attachment 297489Quote:
Originally Posted by SuperCorona
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