Notice:
The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.
For someone contemplating installing a fixed gps and a depth sounder around the same time... a combo unit can make good sense.
Here are some of the pluses.
One package to mount, supply power to and observe. Depth sounder also provides graphical bottom display. Surface mount means no major holes in bulkhead. External buzzer makes hearing the gps/sounder unmissable. Lower current drain on some models Mounted on a stud or swing arm...they can be monitored in cabin or cockpit
I have a Garmin 176c chartplotter GPS. It uses small computer chip charts which are great. My first chip had all the charts from Tampa to New Orleans on it. My second chip goes from the Keys to Tampa. You can zoom in and out and have an incredible amount of information on it. Including information on marina facilities in a certain port you click on. How do it know? I was in boaters world today and was looking at a Garmin unit which had this chartplotting capability, in color, with a depthmeter. I'm sure it would cost more than 400 bucks but it may be worth checking out. Now if it would just call Scotty to beam you up when needed
Generally speaking, I don't like combination boxes. You lose the single unit, and you're in a bit of trouble. Being out in the fog or after dark with no depth & no nav info makes a fellow nervous. (unless you have a backup unit)
That's why I keep my GPS and depth on seperate devices. Of course, on a small lake, that may not be a big concern.
Most sailors like speed through the water rather than speed over ground. (or have both) Of course, on a small lake there won't be much current to worry about so they should be pretty much the same.
Raymarine (raytheon) makes a nice combo depth sounder/water speed unit.
Currently maintaining two holes in the water...'77 Venture 23 and new to the family, '78 Catalina 25
I have had a Garmin 125 combo unit for several years and it works great, although the unit has a low resolution display and no chart capability. Newer models from Garmin have 10 times the features of my old one, and cost only a little more than I paid. Mine is on a swing mount so I can use it in the cockpit or inside the cabin.
Larry Charlot Catalina 25 #1205 "Quiet Time" Sacramento, CA
I have a Garmin 238 chartplotter/sounder with the blue chart. It has a large display thats easy to read and is very easy to customize the fields to your liking. Another plus is no holes in the hull for the sounder and low power draw.
Notice: The advice given on this site is based upon individual or quoted experience, yours may differ. The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.