When running down the lake what's more accurate the gps on your graphs or the speedometer on the boat??
When running down the lake what's more accurate the gps on your graphs or the speedometer on the boat??
Are you serious Clark? GPS is always more accurate.
USN Retired
2020 Basscat Caracal
2020 Mercury 225 ProXS 4s
I would trust my gps
gauge doesn’t always work
Provided there isn’t an issue with the GPS receiver or the satellites the GPS will tend to be more accurate.
GPS
What about gps vs a radar gun?
GPS. It isn’t dependent on direction or calibration to measure speed.Originally Posted by RangerAce
Another vote for GPS.
2013 Phoenix 721 ProXP
is this a joke? when has a boat speedo( unless its a gps one) ever been accurate?
But isn’t there a +/- on the readings from gps satellites? All things equal I would think that a radar gun would pretty dang close to gps accuracies.
I’m just spitballing here, so I really have no idea if I’m even in the ball park.
I didn't trust a speedo even before GPS.
Wash your hands and say your prayers, cause Jesus and germs are everywhere.
GPS on all boats except a Ranger.
On a Ranger use the boat speedo as they typically show a higher speed.
A lot of boats suddenly got slower when people started putting gps on their boats. Honestly don't even see the point in having a traditional speedo on MOST boats anymore.
2023 Xpress H18 with 115 SHO and Powertech NRS4 21p
8" Bob's Action Jack
Garmin Echomap 12, 10, 9, and LVS34 networked with Netgear Switch
Ultrex
Trick Steps and Ramp N Clamp
Pulled by a 2016 single cab HEMI Ram
Treat others like you want to be treated when on the water EVEN WHEN IN A TOURNAMENT! No fish is worth having a confrontation because you cut someone off or came in on top of someone.
i figured so but I wanted to make sure thanks !
Not everyone knows everything about a boat. Many people are new to boats and have to start somewhere with the questions.
I’m going to go against the trend and say it depends.
Are you talking about speed over ground or speed through water?
If you want to know how long it’s going to take you to get from point a to point b, then GPS is the best, but if you want to set your trolling speed then you need to know your speed relative to the water, not the bottom (and I wouldn’t trust a boat speedometer for that, you need the proper sensor attached to your electronics for that http://www.airmar.com/productdescription.html?id=104 )
Also commonly referred to as the "dreamometer" on boats around here...gps is far more accurate.
A speedometer gauge is a joke. That’s something you take out and put a radio in it’s spot. GPS, when in the open is usually in sight of 24-28 satellites and is very accurate.
2008 BULLET 21XD 2007 Merc 300xs
My speedo hasnt worked in 6 years
https://www.gps.gov/systems/gps/performance/accuracy/
so GPS accuracy on chartplotters is typically within .2% assuming no signal blockages from trees, weather, etc.
2017 Triton TRX Patriot w/250 ProXS Optimax
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