Depth finder - Page 3 - SailNet Community
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post #21 of 24 Old 05-21-2014
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Re: Depth finder

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Originally Posted by christian.hess View Post

I have no idea why anyone would deem knowing your in 400 feet usefull...
Think fog or an unlighted coast at night and no fix info for a while...due to failed instrument or loss of power or loss of antenna.

Especially coming "on soundings" prior to landfall or to find the location of a charted bottom feature that can give you an estimate of your position

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post #22 of 24 Old 05-21-2014
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Re: Depth finder

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Think fog or an unlighted coast at night and no fix info for a while...due to failed instrument or loss of power or loss of antenna.

Especially coming "on soundings" prior to landfall or to find the location of a charted bottom feature that can give you an estimate of your position
I can see it being useful here where it can be 400+ deep right next to shore and when it shoals it comes up quick. Lots of nav instructions I have seen tell you to stay for example "mid channel in more than 350" or some such.
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post #23 of 24 Old 05-21-2014
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Re: Depth finder

Hummingbird D-10. $100 and works like a champ.
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post #24 of 24 Old 05-21-2014
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Re: Depth finder

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Originally Posted by eherlihy View Post
I HAD the Signet Marine unit that was common in the '80s and '90s... I HATED the damn thing. It would read 10.5' (which the chart and I agreed with), then, a foot ahead, would read 3.4'... This happened EVERY day that I turned it on. Considering that my boat draws 5.7', and I was still moving, it caused confusion. Was I aground? Was there a submarine under my hull? was it a fish? was it a spurious reading?? WTF?

When I had my hull soda blasted, and painted, the boob at the yard painted the transducer too. I was not happy initially, but after properly installing a decent fish finder, I considered that the boob had done me a service.
exactly

the right way gave you that performance if you will so a fishfinder that does the job even a basic one is somehow cutting corners and a disaster waiting to happen?

that was my argument

my comment on the 400 ft was pushing it, yeah it can be useful to know if you are "getting" close but I have never found that accurate or a way to reach shore...if you lose navigation aids and whatnot...what are you going to do, follow the 400ft yellow brickroad?

before reaching land in most places I have cruised the depth sounder became usefull the last mile or so...maybe even less...in fact depths started being readable the last hour or so of the trip...like I said before its the small shallow depths and precision that would make a depth sounder better or not...

I had those exact same symptoms on my signet and also a horizons I beleive depth sounder on my wooden boat intermittent and jumpy readings

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