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Transducer Thru Hull or Shoot Thru Hull

Old 07-27-2005, 04:01 PM
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Default Transducer Thru Hull or Shoot Thru Hull

I am having 2 Raymarine E120's installed on my new Triton 351 I can't decide if I want to have a thru hull or shoot thru hull transducer installed, both are 1KW. Is the thru hull that much better that I want to drill a hole in the bottom of my boat and will it effect the ride?
Old 07-27-2005, 04:48 PM
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Default Re: Transducer Thru Hull or Shoot Thru Hull

Factors to consider when selecting a transducer

When trying to determine which transducer is best for you, you’ll need to consider the following variables:

* What material the transducer housing is made of, based on boat hull composition
* How the transducer should be mounted on the boat: in the hull, through the hull, or on the transom
* What you want to see displayed: depth, speed, temperature, or a combination






Composition


The first step is to determine what material the transducer should be composed of.

Plastic housings are recommended for fiberglass or metal hulls.

Bronze housings are recommended for fiberglass or wood hulls. Bronze is preferable to plastic for wooden hulls because the expansion of wood could damage a plastic transducer and cause a leak. Installation of a bronze housing in a metal hull requires an insulating fairing, available from your Raymarine dealer. A metal housing should NOT be installed in a vessel with a positive ground system.

Stainless Steel housings are recommended for steel or aluminum hulls.
In-Hull Transducers

In-hull (a.k.a. shoot-through) transducers are epoxied directly to the inside of the hull. These are only used in fiberglass hulls. In-hulls will not work with wooden aluminum, wood, or steel hulls, or in foam sandwich or hulls that have air pockets. Any wood, metal, or foam reinforcement must be removed from the inside of the hull.

With an in-hull transducer, the signal is transmitted and received through the hull of the boat. As a result, there is considerable loss of sonar performance.



In other words, you won’t be able to read as deep or detect fish as well with an in-hull transducer as with one that’s transom mounted or thru-hull mounted.

Fiberglass hulls are often reinforced in places for added strength. These cored areas contain balsa wood or structural foam, which are poor sound conductors. The transducer will need to be located where the fiberglass is solid and there are no air bubbles trapped in the fiberglass resin. You’ll also want to make sure that there is no coring, flotation material, or dead air space sandwiched between the inside skin and the outer skin of the hull.

Advantages

* No holes drilled in hull
* Excellent high speed performance
* No obstructions in the water
* Low maintenance



Disadvantages

* Reduced maximum depth reading
* reduced fish detection
* Can only be used with fiberglass hulls

Info taken from the RayMarine description section

Good luck I am drilling holes to get the best results after spending the $$$'s for multi $1000.00 unit, transducer, monitor and getting accurate readings. They say that they work thru the hull even a metal one but most talk about a power loss and response loss and accuacy loss. Thru hull is the way I am going for sure.

JMO

BAZ...
Old 07-27-2005, 09:28 PM
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Default Re: Transducer Thru Hull or Shoot Thru Hull

Thanks very informative, when using a 1000 watt high performance shoot thru hull transducer does the minimal loss over power say 5 -10 % really matter. I like the low maintenance with my last boat several months into the season I would lose signal from the growth on the transducer.
Old 07-27-2005, 10:04 PM
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Default Re: Transducer Thru Hull or Shoot Thru Hull

Great info Steve,
Old 07-27-2005, 10:29 PM
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Default Re: Transducer Thru Hull or Shoot Thru Hull

I just got back from calibrating an autopilot on a 33' Grady that has 2 E80 units with the 1000watt inhull. We ran 46mph and the ducer never skipped a lick. I asked them the max depth they have seen so far with good detail, they said 2400' as that is the deepest they went. They also said the detail in that depth was great.
Old 07-28-2005, 06:27 AM
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Default Re: Transducer Thru Hull or Shoot Thru Hull

Is the in hull the same as thru hull not shoot thru hull.
Old 07-28-2005, 06:56 AM
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Default Re: Transducer Thru Hull or Shoot Thru Hull

Clover ...

the In hull and shoot are considered the same units:

and here is the same unit as a thru hull !

John
Old 07-28-2005, 12:06 PM
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Default Re: Transducer Thru Hull or Shoot Thru Hull

What is the numbers for the 1000+ watt Stainless Steel Transducer? They said Brass needs a special adaptor for shorting out reasons and reccommend S/S for a shoot thru aluminum hull. All I can find is the 600 watt unit is there a larger and better S/S unit number for me?

600 Watt Stainless steel through hull transducer with depth speed and temperature. For use with metal hulls(SS554V) Product Number: E66043 Suggested Retail Price: $670.00 with/out the faring block!! Compatible with the following Echo Sounders:

* SL Series: SL755RC, SL760RC , SL1250, and SL1250RC
* hsb2 Plus Series: L755RC, L760, L760RC, L1250,and L1250RC
* hsb2 HDFI Series: DSM250, L770D, L770DRC, L1260D, and L1260DRC

Compatible hull material: metal, wood, and fiberglass

Max Power: 600 W


Frequency: 200/50 kHz

Beam Angles: 200 kHz 12° 50 kHz 45°

Cable: 30ft (10m) cable with connector

Other: Self-sealing removable paddle wheel insert.

Note: E66045 fairing block is required for proper installation

It doesnt mention the DSM300 that is the unit I will be buying?

Help

BAZ...
Old 07-28-2005, 12:10 PM
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Default Re: Transducer Thru Hull or Shoot Thru Hull

Steve


http://www.raymarine.com/raymarine/P...roduct_id=3167


Stainless Steel Ultra High Performance Thru-Hull w/Fairing

1000 Watt Ultra High Performance stainless steel through hull transducer with temperature. (SS560) Fairing block included


Product Number: E66053

Suggested Retail Price: $1,470.00
U.S. Dollars
Add to My Wish List

Compatible with the following Echo Sounders:

* DSM250 and DSM300
* SL Series: SL755RC, SL760RC , SL1250, and SL1250RC
* hsb2 Plus Series: L755RC, L760, L760RC, L1250,and L1250RC
* hsb2 HDFI Series: DSM250, L770D, L770DRC, L1260D, and L1260DRC

Compatible hull material: metal hulls

Max Power: 1000 W

Frequency: 200/50 kHz

Beam Angles: 200 kHz 6° 50 kHz 19°

Cable: 30ft (10m) cable with connector

Fairing block included.
Old 07-28-2005, 11:20 PM
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Default Re: Transducer Thru Hull or Shoot Thru Hull

John,

Of course I can count on you for a quick referance.

Thanks,

BAZ...

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