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Old    tj (tj_in_kc)      Join Date: Jan 2008       07-15-2009, 7:30 AM Reply   
So, I got underneath the boat at the carwash the other day to scrub, and I notice this spot on the underside of the hull that I've never noticed.

Its on the port (passenger) side, its just about in the center of the boat length wise, and a little in front of one of the thru-hull fittings. Its about the size of a half-dollar coin.

It appears to me like a piece of plastic or fiberglass.

What is this??? Can you check your boat, does it have this????




Thanks in advance for looking and if anyone can identify what this is!
Old    Eubanks (eubanks01)      Join Date: Jun 2001       07-15-2009, 7:44 AM Reply   
A mistake?! J/K I don't know.
Old    Sam (wake1823)      Join Date: Dec 2005       07-15-2009, 7:44 AM Reply   
probably a hole that was plugged.
Old     (fatsac)      Join Date: Jun 2004       07-15-2009, 7:52 AM Reply   
Plugged through-hull. Did you buy it used? Seems weird it would come that way from the factory.
Old    tj (tj_in_kc)      Join Date: Jan 2008       07-15-2009, 7:58 AM Reply   
nah, i bought it brand new from Malibu. It had like 4 hours on it when i picked it up...

can someone else with a boat at the house or if you work at a dealership go out and look and see if you have this??
Old    Trace (trace)      Join Date: Feb 2002       07-15-2009, 8:24 AM Reply   
Did you look inside the boat? Looks like a thru-hull depth finder puck to me.
Old     (fatsac)      Join Date: Jun 2004       07-15-2009, 8:33 AM Reply   
I bet Trace is right!
Old    murphy8166            07-15-2009, 8:36 AM Reply   
A plug....are you guys serious????

It the transducer for your depth finder. I have the same thing on my Malibu.
Old    tj (tj_in_kc)      Join Date: Jan 2008       07-15-2009, 8:40 AM Reply   
LOL, yeah i think its the transducer for the depth finder....the guys over at told me so right off!

Old    dhcomp (dhcomp)      Join Date: Jun 2003       07-15-2009, 8:59 AM Reply   
my 08 Malibu Response LXI. Has got to be the depth finder. First thought was plugged Paddle wheel location...but i didn't look on the inside.
Old    Brett Yates (polarbill)      Join Date: Jun 2003       07-15-2009, 9:02 AM Reply   
Why the heck did they actually have to drill out a hole for it? Most of those transducers you just glue down the fiberglass in the bilge area.

(Message edited by polarbill on July 15, 2009)
Old    Old School (edandgem)      Join Date: Jun 2005       07-15-2009, 9:05 AM Reply   
Murphy Smith is right it is the transducer for your depth finder. I have the same on my malibu
Old    Tim (nukepower)      Join Date: Aug 2006       07-15-2009, 11:03 AM Reply   
The transducers work MUCH better if they are mounted like this. If you glue it to the inside of the hull, and there is ANY type of inconsistency in the fiberglass layers (air bubbles, gaps, different cloth thicknesses) it will not give you good, consistent readings on depths. Another thing, if I remember correctly from my 2000 Sunsetter LXI, some Malibu's have the hull and and "inner liner" and there is an air gap between the two. I added a depth finder and glued it in the ski locker since it was only one layer there.
Old    Chasin7 T (chaser)      Join Date: Sep 2006       07-16-2009, 11:29 AM Reply   
I think it's a floor drain in case you get some water in your boat. :-)
Old    Kevin K (supra)      Join Date: Aug 2002       07-16-2009, 11:52 AM Reply   
I think it is a spy camera for fish
Old    Brock Landers (formfunction)      Join Date: Jun 2008       07-16-2009, 1:12 PM Reply   
transducer is sunk through the hull past the glass so you can get more accurate readings when your moving.


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