Ahoy Mike, I bought a refurbished interphase forward looking sonar, probe, from interphase in Calif, great service
and backup from Corey there!
As a navigational tool, very limited, does give warning of floating logs
, and bombies, but only if they are very close. I think that it more of a tool for finding schools of fish
Biggest limitation is, it only works in 6X the water depth
, so in 4m of water
, 24m ahead or 2 boat lengths, you have to be going very slow. In 20m you get 120m ahead, but you don't really need it there, although, you can see it shoaling and coral
walls show up clearly where they rise abruptly from the ocean floor, but in shallow waters, very hard to use!!! I use it when coming in to anchor
next to coral
islands, to check out the bottom before anchoring
. Also, very useful when slowly making your way into shallow areas in rain, night, any time !!!! in conjunction with radar
and a forward lookout. It does give one more layer of protection, and I need all the help I can get!!
Doesn't work in over 70m of depth
unless you tune it to just look in the top 10m of water, for floating hazards. You can steer the beam to scan just a portion of the 90 degrees ahead, also gives a running display of the bottom contour underneath the yacht, and a depth reading, very glary at night!
Can see the anchor
chain, but no anchor!
Cost $900 usd landed in Malaysia
, they replaced it when it had a fault on installation
All the best from Keith.