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Old 26 July 2017, 13:15   #1
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Garmin Transducers

Hi everyone. I am looking at a decent transducer for my RIB and have come across the GT30-THP from Garmin.

They are a through hull design and therefore will protrude from the hull. I am confident that this will not cause any adverse speed / handling issues with the boat but i was wondering if anyone could comment on the integrity of the transducers themselves. I am curious to know how well they will physically cope with speeds of up to 35Kts , sensor resolution is not a concern as at that sort of speed i wouldn’t be paying too close attention just not sure if they would survive the forces involved.

Any feedback would be greatly appreciated.


link to the tyoe i have my eye on ...


Garmin GT30-THP Thru Hull Pair ClearVu & SideVu Transducers | Force 4 Chandlery
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Old 26 July 2017, 16:06   #2
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if its through hull it wont protrude anywhere it will sit in the bilge and fire its signal through the hull . and at 35 knts I doubt you will get much detail out of any type
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Old 26 July 2017, 17:17   #3
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The halmatic are timber made arnt they hence the need for through hull not shoot through hull those are expensive bits of kit wow
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Old 26 July 2017, 20:01   #4
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You can't get in/hull for side or downvision, only for basic depth.

Side / down Vision isn't really designed to work at high speeds. You'd be better off with a secondary depth/only system (conventional sonar) for this and down or side vision as you choose for low speed wreck / fishing what ever you're hunting !

Those transducers will be fine at 35knts. I'd be worried about ever trailer recovering it, however.
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