Peter:
One item to consider is power usage (head and display).
I use my depth sounder near shore, for the audio alarm mostly. Can watch it coming in but, most useful in chart work near shore. Example; half moon bay can be entered on a 30' depth from the south; (double check the #, as it has been some years ago when I sailed in there)
My backup (temporary unit) is just sitting on silly putty, it is off a GPS, it is also a fish finder (it has a shorter range and uses more power than the depth sounder).
BIG NUMBERS are nice in the display. Other than display and power, they all do the same thing.
Norm
FYI Please also note: 5200 is good and bad, and it is mostly not removable+/- . It can have air bubbles in it (they will never come out) and it is very hard to clean up or off. So ? on it's use, it works good but it is a pain to remove or do to much with (move around or clear air bubbles from).
Last modified: April 28, 2014 9:18 AM | Deleted user