dcamt 0 Report post Posted January 12, 2012 I have a 242 cruiser with a Garmin 545 chartplotter. When cruising my chartplotter depth readout often does not change and seems locked at a certain number (depth). Is my unit broken? Are readouts affected by speed (25 mph)? does the type of bottom (sand) affect the read out? Tks for the help Share this post Link to post Share on other sites
