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Speed - GPS or Speedometer
Just curious as to the accuracy between the two.
The speedometer in my boat is a standard speedo nothing special, the GPS is a Hummingbird Matrix 25 which I just got a week or two ago. After a few outings I noticed that there is at times a considerable difference between the two and other times they seem spot on. Can't quite figure that one out. Would a head current account for the boats speedometer to appear at a higher MPH than the GPS? |
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