Is thru hull and shoot thru that same thing? If not, what is the difference? I just bought my first big bass boat. A 2005 Stratus Pro 285 XL and need to install a nice Humminbird with side scan and down imaging. It has a Lowrance in dash but need something nicer. I"m just confused with the transducers.

Any help understanding is greatly appreciated.

 

Vic

No they are not the same.

 

Shoot-thru is epoxied inside the hull and the sonar pulses shoot through the hull material.

The 2D shoot-thru is either the XP 9 20 or the XP 9 20 T.

 

Thru-hull is an external mounted transducer that takes a 1"+ hole in the hull bottom for the mount stem with cable.

The thru-hull Side Imaging transducer is the XPTH 9 HDSI 180 T.

This is the thru-hull SI transducer on the transom extension of a Ranger.

 

So, which one comes with the fish finder?

All units come with a transom transducer.

There are other types to do a custom installation that suits your hull. Do it correctly the first time and use the right parts.

 

You can exchange the unopened transducer package for the correct one for your instalation. Do not "adapt" one for other purposes if one is available for your particular use.

 

You craft should use a shoot-thru 2D transducer for depth and 2D sonar all the time. That can be a 2D unit transducer or a DI unit transducer.

For a Side Imaging unit, the SI transducer has to be externally mounted so the thru-hull or transom type is what you use, then add a shoot-thru XP 9 20 in the hull and connect the two transducers to the display with the AS SIDB Y cable.

 

There are trolling motor mount transducer types too for that application. 

Ok, Thank you Wayne. Now the journey to find a good Humminbird for my boat.