Reply
 
Thread Tools Display Modes
 
Old 12-31-2015, 01:50 PM   #1
Guru
 
cardude01's Avatar
 
City: Victoria TX
Country: USA
Vessel Name: Bijou
Vessel Model: 2008 Island Packet steadysailer
Join Date: Nov 2012
Posts: 3,178
Garmin keel offset question

I have a Garmin plotter and a Raymarine transducer (didn't want to change transducers when I upgraded plotters). I can't get the keel offset function to save my keel size. Is that because I don't have a Garmin transducer, or am I just doing it wrong?

I sent an email to Garmin support but thought someone here might know the answer.
__________________
Advertisement

cardude01 is offline   Reply With Quote
Old 12-31-2015, 02:08 PM   #2
Senior Member
 
obthomas's Avatar
 
City: Seabrook Texas
Country: USA
Vessel Name: TheVenture
Vessel Model: 1985 Bestway Labelle Sundeck 40ft
Join Date: May 2013
Posts: 462
If you have networked chartplotters you will need to set the offset on each plotter.
__________________

obthomas is offline   Reply With Quote
Old 12-31-2015, 02:21 PM   #3
Veteran Member
 
Tolly Roger's Avatar
 
City: Tsawwassen/Point Roberts
Country: Canada/USA
Vessel Name: Tolly Roger
Vessel Model: Tollycraft 34 SC
Join Date: May 2014
Posts: 64
Assuming you can see the depth meaning the transducer is working....
From the home screen select configure>my boat>keel offset
Select the number you want to configure (should be an on screen selection maybe using the rocker switch)
Select done
It will differ slightly depending on model of plotter and if you have a digital network box.
__________________
Tolly Roger
1983 Tollycraft 34SC
www.tollyroger.com
Tolly Roger is offline   Reply With Quote
Old 12-31-2015, 02:21 PM   #4
Guru
 
cardude01's Avatar
 
City: Victoria TX
Country: USA
Vessel Name: Bijou
Vessel Model: 2008 Island Packet steadysailer
Join Date: Nov 2012
Posts: 3,178
I only have the one plotter.

I can input the keel size but the plotter will not save it for some reason.
cardude01 is offline   Reply With Quote
Old 12-31-2015, 02:29 PM   #5
Guru
 
City: North Charleston, SC
Country: USA
Join Date: Sep 2010
Posts: 4,390
I doubt it's the transducer if it's working otherwise. You may be doing something wrong.


As with any computer, try turning it off and back on again. Maybe it will work then.
rwidman is offline   Reply With Quote
Old 12-31-2015, 02:29 PM   #6
Guru
 
cardude01's Avatar
 
City: Victoria TX
Country: USA
Vessel Name: Bijou
Vessel Model: 2008 Island Packet steadysailer
Join Date: Nov 2012
Posts: 3,178
This is all the manual says. I don't have the "intelliducer" so that's why I thought my old Raymarine transducer might be the problem.

Click image for larger version

Name:	ImageUploadedByTrawler Forum1451590175.747279.jpg
Views:	201
Size:	121.0 KB
ID:	47779
cardude01 is offline   Reply With Quote
Old 12-31-2015, 02:59 PM   #7
Senior Member
 
obthomas's Avatar
 
City: Seabrook Texas
Country: USA
Vessel Name: TheVenture
Vessel Model: 1985 Bestway Labelle Sundeck 40ft
Join Date: May 2013
Posts: 462
I have attached the instruction for my Garmin as it may help.
Attached Thumbnails
Click image for larger version

Name:	keel offset.jpg
Views:	224
Size:	70.1 KB
ID:	47784  
obthomas is offline   Reply With Quote
Old 12-31-2015, 03:18 PM   #8
Guru
 
Capt.Bill11's Avatar
 
City: Sarasota/Ft. Lauderdale
Country: USA
Join Date: Apr 2014
Posts: 5,422
Let me guess, you can see the offset you put in reflected in the digital depth display on the sounder but the picture on the sounder showing the bottom and depth to the bottom does not reflect the offset you put in?
Capt.Bill11 is offline   Reply With Quote
Old 12-31-2015, 03:19 PM   #9
Guru
 
cardude01's Avatar
 
City: Victoria TX
Country: USA
Vessel Name: Bijou
Vessel Model: 2008 Island Packet steadysailer
Join Date: Nov 2012
Posts: 3,178
Garmin keel offset question

...
cardude01 is offline   Reply With Quote
Old 12-31-2015, 03:39 PM   #10
Guru
 
Capt.Bill11's Avatar
 
City: Sarasota/Ft. Lauderdale
Country: USA
Join Date: Apr 2014
Posts: 5,422
I went through the same thing with our new Garmin units. Tried multiple times to get the graphic display to refect the offset. Even had the installers try it. Gave up and called Garmin. And guess what, according to them, the offset will only be reflected in the digital read out. Never on the bottom picture! I said you have got to be kidding me! Why the hell would I want to have two depth readings on one display? Or at the very least not be able to fully control what I see on the screen they way I want it?

And since no offset can be put into the display that means you can never get it to read true depth or depth under the keel, correct? "Correct" they said. So I said in that case you have to know how deep the transducer is mounted under the water and take that into account to understand what the depth displayed on edge of the picture is telling you. "Correct" again they said.

Total BS I think.

And I don't recall ever having a bottom machine that when you put an offset in it didn't show up on both the digital and graphic display. And I told Garmin that.

The person on the phone did not disagree that this made no sense and claimed he would pass my thoughts on it up the line.

I suggest you call them, and if you agree with me that this is BS, tell them so. Perhaps if enough people point out how foolish this is, in a future software up date they can correct it. Or at the very least in new models people will not face this issue.
Capt.Bill11 is offline   Reply With Quote
Old 12-31-2015, 03:46 PM   #11
Guru
 
cardude01's Avatar
 
City: Victoria TX
Country: USA
Vessel Name: Bijou
Vessel Model: 2008 Island Packet steadysailer
Join Date: Nov 2012
Posts: 3,178
Garmin keel offset question

Quote:
Originally Posted by obthomas View Post
I have attached the instruction for my Garmin as it may help.

That's what I'm doing, but the depth shown on the plotter screen doesn't change.

My screen looks like this with the depth on the bottom left.
Click image for larger version

Name:	ImageUploadedByTrawler Forum1451594747.857445.jpg
Views:	102
Size:	86.8 KB
ID:	47785

Is this what you are talking about Capt Bill? If so, where is the keel offset depth shown?
cardude01 is offline   Reply With Quote
Old 12-31-2015, 03:53 PM   #12
Guru
 
Capt.Bill11's Avatar
 
City: Sarasota/Ft. Lauderdale
Country: USA
Join Date: Apr 2014
Posts: 5,422
Quote:
Originally Posted by cardude01 View Post
That's what I'm doing, but the depth shown on the plotter screen doesn't change.

My screen looks like this with the depth on the bottom left.
Attachment 47785

Is this what you are talking about Capt Bill? If so, where is the keel offset depth shown?
No. I'm talking about the fact that when your display is set to show a graphic picture of the depth, the digital depth display will reflect the offset you put in. But the depth graph on the edge of the picture showing the depth to the bottom will no reflect the offset. Only the digital depth display will show the depth with an offset.
Capt.Bill11 is offline   Reply With Quote
Old 12-31-2015, 03:56 PM   #13
Guru
 
Capt.Bill11's Avatar
 
City: Sarasota/Ft. Lauderdale
Country: USA
Join Date: Apr 2014
Posts: 5,422
What you seem to be asking is why the depth numbers displayed on the charts don't change when you put in an offset.

If that is what you are asking, the numbers on the chart will never change. And they are not supposed to,
Capt.Bill11 is offline   Reply With Quote
Old 12-31-2015, 03:57 PM   #14
Guru
 
Capt.Bill11's Avatar
 
City: Sarasota/Ft. Lauderdale
Country: USA
Join Date: Apr 2014
Posts: 5,422
The digital depth in the lower should reflect the offset.
Capt.Bill11 is offline   Reply With Quote
Old 12-31-2015, 04:04 PM   #15
Guru
 
hmason's Avatar
 
City: Westport, CT
Country: USA
Vessel Name: Magic
Vessel Model: Grand Banks 46 Europa
Join Date: Aug 2013
Posts: 1,903
The digital readout is showing the depth under the keel. The graphic display is showing water depth from the surface to the bottom. The fish icons are then correctly shown at their actual depth below the surface. Two different pieces of information.
__________________
Howard
Magic, 1996 Grand Banks Europa
Westport, CT and Stuart, FL
hmason is offline   Reply With Quote
Old 12-31-2015, 04:10 PM   #16
Guru
 
cardude01's Avatar
 
City: Victoria TX
Country: USA
Vessel Name: Bijou
Vessel Model: 2008 Island Packet steadysailer
Join Date: Nov 2012
Posts: 3,178
I'm trying to get the digital display on the bottom left to display the keel offset-- depth from bottom of the keel to the bottom of the bay. That's the number that I can't get to change. When I enter the keel size in the offset screen it doesn't save what I put in after I hit "done".

I will have to get in front of the plotter and try again. I must be doing something wrong.
cardude01 is offline   Reply With Quote
Old 12-31-2015, 07:08 PM   #17
Guru
 
Capt.Bill11's Avatar
 
City: Sarasota/Ft. Lauderdale
Country: USA
Join Date: Apr 2014
Posts: 5,422
Quote:
Originally Posted by hmason View Post
The digital readout is showing the depth under the keel. The graphic display is showing water depth from the surface to the bottom. The fish icons are then correctly shown at their actual depth below the surface. Two different pieces of information.
No. The graphic display does not show true depth from the surface because you can not put an offset in.

The unit is not smart enough to know how many feet the transducer was mounted under the way on the hull of the vessel.
Capt.Bill11 is offline   Reply With Quote
Old 01-28-2016, 04:23 PM   #18
Guru
 
cardude01's Avatar
 
City: Victoria TX
Country: USA
Vessel Name: Bijou
Vessel Model: 2008 Island Packet steadysailer
Join Date: Nov 2012
Posts: 3,178
Garmin keel offset question

Finally figured this out. The keel offset has to be set from the Raymarine ST60 depth gauge (that's down below and that I never look at) which evidently feeds my Garmin with depth info.



Now I need to figure out how big my keel is...
cardude01 is offline   Reply With Quote
Old 01-28-2016, 04:48 PM   #19
Guru
 
rochepoint's Avatar
 
City: Sidney BC
Country: Canada
Vessel Name: Rochepoint
Vessel Model: 1985 Cheer Men PT38 Sedan
Join Date: Apr 2009
Posts: 1,192
According to some ads on Yachtworld you draft is 3" 8"..........
__________________
Cheers Mike Barge
MV Rochepoint
Sidney, British Columbia.
"Yes, I have the right anchor"
rochepoint is offline   Reply With Quote
Old 01-28-2016, 05:28 PM   #20
Guru
 
Capt.Bill11's Avatar
 
City: Sarasota/Ft. Lauderdale
Country: USA
Join Date: Apr 2014
Posts: 5,422
Quote:
Originally Posted by cardude01 View Post
Finally figured this out. The keel offset has to be set from the Raymarine ST60 depth gauge (that's down below and that I never look at) which evidently feeds my Garmin with depth info.



Now I need to figure out how big my keel is...
The easiest way to do this is to measure the true depth of the water under the area of the boat near where your transducer is mounted, then subtract 4' + from the true depth number (if your draft is 3'8") and depending on how much safety margin you want. Then set your depth finder to read that resulting number and you'll have the depth under your keel with or without a bit extra if you choose.
__________________

Capt.Bill11 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 02:46 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012