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Go Back   SailNet Community > On Board > Gear & Maintenance > Electronics > Experience with Garmin GMI 10 and related NMEA 2000 sensors?
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Topic Review (Newest First)
03-28-2013 03:00 PM
jfine
Re: Experience with Garmin GMI 10 and related NMEA 2000 sensors?

Quote:
Originally Posted by knuterikt View Post
I understand that it feels risky to drill hole in the boat, but I think you are over-dramatizing this task.

It's your decision, at least you have got some input
I really appreciate it. I did a bunch of work on my Triumph, though that was made out of a material called Ropolene which was easily plastic welded. I'll have to get over my fear of fiberglass soon because I've got a cracked battery box corner which is need of repair by this season.
03-28-2013 12:02 PM
knuterikt
Re: Experience with Garmin GMI 10 and related NMEA 2000 sensors?

Quote:
Originally Posted by jfine View Post
I guess it'd be worth getting a quote for both. I personally don't quite feel confident in my ability to either place it properly or seal it correctly.
I understand that it feels risky to drill hole in the boat, but I think you are over-dramatizing this task.

It's your decision, at least you have got some input
03-28-2013 11:45 AM
jfine
Re: Experience with Garmin GMI 10 and related NMEA 2000 sensors?

Quote:
Originally Posted by knuterikt View Post
I don't race but I have a sailboat to sail, so still interrested to get the boat moving the way I want to go
I guess it'd be worth getting a quote for both. I personally don't quite feel confident in my ability to either place it properly or seal it correctly.
03-27-2013 06:10 PM
knuterikt
Re: Experience with Garmin GMI 10 and related NMEA 2000 sensors?

Quote:
Originally Posted by jfine View Post
Ah. That's something I hadn't considered. I sail primarily in the Finger Lakes (Canandaigua specifically) in NY. We race a few class boats but at this point aren't necessarily planning on racing this boat, though if we do it'd be in an open class.
I don't race but I have a sailboat to sail, so still interrested to get the boat moving the way I want to go
03-27-2013 04:48 PM
jfine
Re: Experience with Garmin GMI 10 and related NMEA 2000 sensors?

Quote:
Originally Posted by knuterikt View Post
Don't know where you sail but having both SOG (Ground Speed) and STW (speed through water) can give me important information on the direction of the current.

When I sail with the current I will try to use it to my advantage.
When the current is against i seek into water with less depth as I know the effect is less there. Short tacking in water with less depth is better if the current is against..
Ah. That's something I hadn't considered. I sail primarily in the Finger Lakes (Canandaigua specifically) in NY. We race a few class boats but at this point aren't necessarily planning on racing this boat, though if we do it'd be in an open class.
03-27-2013 03:42 PM
knuterikt
Re: Experience with Garmin GMI 10 and related NMEA 2000 sensors?

Quote:
Originally Posted by OS2Dude View Post
GPS (Ground Speed) is MUCH more useful. It is your ACTUAL speed. The water speed is how fast the water is under your hull. If you are at anchor and there is a current, you will display a water speed but not a ground speed. If you sail WITH the current, water speed will be less (possibly even negative) than your ground speed. If you sail against the current, you can show a much greater 'speed' than what you are actually going compared to ground.
Don't know where you sail but having both SOG (Ground Speed) and STW (speed through water) can give me important information on the direction of the current.

When I sail with the current I will try to use it to my advantage.
When the current is against i seek into water with less depth as I know the effect is less there. Short tacking in water with less depth is better if the current is against..
03-27-2013 11:11 AM
jfine
Re: Experience with Garmin GMI 10 and related NMEA 2000 sensors?

Quote:
Originally Posted by sandeb2 View Post
you dont need to put holes in your hull for depth sounder. the 'puck' can be fiberglassed to the inside of the hull. it shoots thru f'glass fine, just cant have any air bubbles under it.
Ya, I think the advantages of knowing water temp and hull speed might not be worth the cost of putting a big hole in the hull. ;-)
03-27-2013 10:07 AM
sandeb2
Re: Experience with Garmin GMI 10 and related NMEA 2000 sensors?

you dont need to put holes in your hull for depth sounder. the 'puck' can be fiberglassed to the inside of the hull. it shoots thru f'glass fine, just cant have any air bubbles under it.
02-28-2013 09:46 PM
jfine
Re: Experience with Garmin GMI 10 and related NMEA 2000 sensors?

Thanks OS2Dude. It's great to hear from people who own the system. I think I'm going to keep my eyes peeled for a deal and do the install before next season. I'm still torn mounting or adding a depth meter. I have a wing boat so draft is virtually nothing but I did run aground on a sandbar due to really flukey low water levels. I don't need water temp, can just dip a toe, so I'd prob shoot through the hull. ;-)
02-28-2013 07:13 PM
OS2Dude
Re: Experience with Garmin GMI 10 and related NMEA 2000 sensors?

GPS (Ground Speed) is MUCH more useful. It is your ACTUAL speed. The water speed is how fast the water is under your hull. If you are at anchor and there is a current, you will display a water speed but not a ground speed. If you sail WITH the current, water speed will be less (possibly even negative) than your ground speed. If you sail against the current, you can show a much greater 'speed' than what you are actually going compared to ground.

I have a Garmin 421s Chart-reader and the GWS-10. I love it. I get (ground) speed, direction, air speed, wind direction, depth, AIS info, everything I need. I'm thinking of adding a GMI-10 to off-load some of the display duties so I can see the chart again....

Chris
s/v Yanqui
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