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Re: [world-cruising] Interphase forward looking sonar

From: Philip Lange (no email)
Date: Thu Jun 01 2006 - 17:08:35 EDT

  • Next message: Ken James: "[world-cruising] the danger of semi submerged containers"

    If this has not been brought up, I think it should have been.

    Traveling at 6 kts means you are traveling at approx 600 + - feet / minute
    Even IF you could "see" a shipping container ahead, and, your eyes,
    of course are glued to the screen, you spotted it at the max advertised
    range and you correctly identified it as a shipping container and not a bit
    of bubble from a collapsing wave. Would you have time to avoid it?

    Philip

    At 12:50 PM 6/1/2006, Ahmet wrote:
    >I doubt it that specific information like that is somethign you could get
    >from the list
    > The best thing to do is to call up one of their reps, and talk to them.
    > They have different transducers, and different mounting methods. There
    > has to be a minimum distance between the transducers. There are other
    > limitations related to interference with the waves etc.
    >
    > Ahmet
    > www.sailnomad.com
    >
    >"Rosalie B." <> wrote:
    > On Thu, 1 Jun 2006 10:23:09 -0400, you wrote:
    >
    > >On 6/1/06, Young, Derrick <> wrote:
    > >>
    > >> I suspect that this is a transducer that you would want to mount as
    > >> close to the bow as is reasonable. That would help, but it would not be
    > >> practical on a "go-fast" boat.
    > >
    > >
    > >
    > >Actually, the FAQ for the Echo Pilot suggests mounting it at the keel.
    >
    >We have a modified full keel - that is the bow sweeps down in a curved
    >line to just forward of the prop. How could we mount it 'at' the
    >keel? Unless you are assuming a fin keel?
    >
    > >That's likely to protect the transducer from being broken off if struck by
    > >something near the bow. The transducer sticks out several inches from the
    > >hull, and it's somewhat vulnerable, so selecting a mounting location that
    > >will give it some protection makes a lot of sense.
    > >
    >Could the transducer be mounted on the forward part of the boat,
    >recessed a bit?
    >
    > >If it's mounted next to the keel, and the keel is - say - 10 feet aft of the
    > >bow, then the forward look in shallow waters won't be much further than the
    > >bow.
    > >
    > >As I mentioned earlier, this instrument appears to be valuable for bluewater
    > >sailors, not the coastal variety.
    >
    >
    >
    >
    >
    >
    >
    >
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    Philip Lange

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  • Next message: Ken James: "[world-cruising] the danger of semi submerged containers"

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