I was pleasantly surprised this weekend when I checked my Speedo accuracy with a GPS unit and found it to read only 1mph faster than the GPS. I must be an exception based on other numbers I’ve seen on this site.

Not To Get Off In Another Direction Of Your Post. A Good Day Of Boating :d Is Definitely When Your Speedometer Is That Close To Gps. My Question Is Anyone Have Feedback On What The Best Gps Is To Purchase (actual Speedometer Style, Hand Held, Or Other) And The Best Buy $$ Thanks

Mine is pretty close too. Under 60 it is right on. At wot it reads just a tick under 65 and gps is 62.7. I use a handheld garmin. I think the handhelds are good because you can take them in the car or keep them when you sell the boat and they are pretty cheap, around 200 bucks or less.

My speedo is 1.5mph faster than gps under 50 and 4mph faster at 70mph. Speedo 74mph = GPS 70mph I like my speedo better

My speedo blows........ its about 7 MPH slower than my GPS 172C, which by the way is a kiler unit. Get them on e-bay for about 425.00

I bought a cheap Garmin Etrex for $100.00 which seems to be a nice small unit with a good quality screen. I simply placed a small vecro circle on the back and a small circle on the dash to hold it in place. seems to hold well with no drilling as well as I can take it with me to prevent theft.

3 mph on mine. Gaffrig speedo reading 67, 64 on GPS


I need a bigger, faster boat

I thought I needed a bigger and faster boat but with gas at $3.40 that 26' single sounds better and better!!

My freakin Speedo reads 20mph all the time WTF? Something its pluggin it up errr. I need a GPS!

If your speedo pickup is in your bravo 1 drive, get a piece of throttle cable, place it in a drill and clean it out. If a piece of wood or something is clogging the hole use a 7/16 drill bit to clean it out.

Or, drop the $ for a GPS.