Thru Hull transducer

wbdenamur

Well-Known Member
Joined
Feb 11, 2011
Messages
96
Reaction score
4
Points
8
Location
Panama City Beach,FL
I am looking to place a flush mount Airmar transducer on my Marlin. If I put it on the flat area made for mounting thru Hull transducers, will the fact that it is slightly recessed cause turbulence and poor readings at running speed?
 

g0tagrip

GreatGrady Captain
Joined
Mar 14, 2010
Messages
407
Reaction score
31
Points
28
Location
Indialantic
I have the thru hull transducer on my Marlin on the flat and have never had an issue with turbulence or poor readings unless going in reverse.
 

Grady fun 5

Well-Known Member
Joined
Aug 12, 2020
Messages
48
Reaction score
1
Points
8
Model
Express 305
I am looking to place a flush mount Airmar transducer on my Marlin. If I put it on the flat area made for mounting thru Hull transducers, will the fact that it is slightly recessed cause turbulence and poor readings at running speed?
On my 2012 305 express which is the same hull as your Marlin. I have no issues with Airmar Transducer’s mounted in the factory flats
 

Dand1

Active Member
Joined
Dec 10, 2010
Messages
31
Reaction score
2
Points
8
Model
Express 305
I am looking to place a flush mount Airmar transducer on my Marlin. If I put it on the flat area made for mounting thru Hull transducers, will the fact that it is slightly recessed cause turbulence and poor readings at running speed?
I have them mounted in the flats of my 305 Express ( same hull as Marlin) and they are fine
Good Luck
 

wbdenamur

Well-Known Member
Joined
Feb 11, 2011
Messages
96
Reaction score
4
Points
8
Location
Panama City Beach,FL
It is recessed. The outer edge is even with the hull. The inner edge is almost 2 inches higher thus giving it a 0 degree flat surface but disrupting smooth water flow.
 

DennisG01

GreatGrady Captain
Joined
Sep 1, 2013
Messages
7,191
Reaction score
1,341
Points
113
Location
Allentown, PA & Friendship, ME
Model
Offshore
It is recessed. The outer edge is even with the hull. The inner edge is almost 2 inches higher thus giving it a 0 degree flat surface but disrupting smooth water flow.
OK. There are some boats/hulls where the area is simply flattened out - but not actually recessed. Defnitely don't want the ducer mounted up inside the "hole".