[C320-list] Knot Meter Transducer Cabin Location Question

[Guy Smith]

 Mine is also under the board just forward of the compression post. Since I like to remove the transducer when we are away from Pleiades, I installed a ring pull in the board that matched the on in the bilge cover, removed the screws that were in the board and cut them so that when they were reinstalled, the did not bite into the stringers below the board any more. Now I can pop the board off and replace the transducer plug quickly instead of removing screws.
As an aside, I'm currently questioning the calibration of the transducer as boat speed always reads less then the GPS SOG, both with and against the tidal flow. The transponder is clean because we remove it when not in use and the paddle wheel spins freely. I've read how to calibrate it with the SOG when tide is slack, but haven't had a point to attempt re-calibration yet. I seem to remember that it read more accurately when I first purchased Pleiades 7 years ago. Has anyone experienced the speedo becoming less accurate over time? I'm wondering if the unit lost it's settings due to an electrical glitch.Curious if anyone else has an issue like this.
Regards,~g
Liz and Guy Smithsv Pleiades '97 C320 #452Worton Creek, MD

    On Wednesday, October 11, 2017, 1:10:39 AM EDT, P.F. Ross <pfrstl at gmail.com> wrote:  
 
 Likewise, I am amazed at all the different locations.

Mine is under the short (maybe 18" long) center piece of cabin sole just
forward of the mast compression post.  Need to remove 4 screws but access
to the bilge compartment where both depth and speed transducers are located
is wide open.

Frank Ross
Beta Wave #206
Naples, FL

On Tue, Oct 10, 2017 at 10:49 PM, Bev Wright <bev.wright at verizon.net> wrote:

> I'm amazed at the various locations reported for the knot meter. On Whoosh
> (#15, 1993) it is in the small port locker under the V-berth, slightly
> forward and impossible to access without removing the door. Even then, it's
> extremely difficult to reach it, you need to be a contortionist. Thus, we
> leave it in all the time and the only time it works is right after a bottom
> cleaning and then only for a week or two. I can understand why someone
> would move it entirely because the V-berth doorway is also a tight fit for
> me. Short of cutting open the deck floor in front of the V-berth, I've been
> thinking about cutting that door space to be much larger and reversing the
> door opening for easier access.
>
> Bev Wright
>
> -----Original Message-----
> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On
> Behalf Of Christian
> Sent: Tuesday, October 10, 2017 6:41 PM
> To: c320-list at lists.catalina320.com
> Subject: [C320-list] Knot Meter Transducer Cabin Location Question
>
> I feel pretty ignorant asking this, so apologies.
>
> Sunday I did my first delivery sail for winter storage, completing my
> first season of owning.  I sailed to the yard with a friend of mine who
> owns a 1987 Catalina 30.  Upon docking, she urged me to find my transducer
> and replace it with the dummy, so the haul out straps wouldn't damage the
> transducer.  For the life of me, we couldn't find where to access it in the
> cabin.
>
> I know they are usually located fore of the keel.  On her C-30, underneath
> her V-Berth, there was a convenient locker door that gave easy access to
> her transducer.  We looked everywhere, but couldn't find where to access
> it.  I feel like an idiot, but I've only seen my boat out of the water
> twice.
>
> The yard said the straps wouldn't harm it, but I'm just very curious where
> cabin access to mine is.  Would it be under one of the sole panels I would
> need to unscrew to access?
>
> As always, many thanks.
>
> Christian Caperton
> 1994 C320 "Canuck" #138
> Monroe Harbor, Chicago, IL
>
>