Old through-hull holes brand name model?

Feb 4, 2015
15
1981 Hunter 33 Green cove Springs marina, fl
The Through-hull holes have dummy plugs in them where the old transducers went. Are there new replacements that i can just slip in from say raymarine etc? What brand are these any ideas? Thanks.
Just discovered they are old SR mariner Nav-5 transducers. Replacements that fit the holes?
 

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Apr 24, 2006
868
Aloha 32 Toronto, Lake Ontario
I have the same issue...

Our old SR Mariner instruments were toast. I wanted to find replacements that would fit the old holes but everything was larger diameter. Also, many are now a single unit (speed, depth, temp) and NEMA200 that can talk to a variety of displays.

I'm now questioning whether I really need speed and temp (have GPS and a toe to tell temp with). Then I could use a "shoot through hull" transducer and eliminate two holes in my hull.

Too many choices....

Chris
 
Apr 24, 2006
868
Aloha 32 Toronto, Lake Ontario
Oh - and don't laugh.

Last season I used an inexpensive fish finder. Epoxied the transducer to the inside of the hull. It worked perfectly and even gave bottom contour info (as well as fish location and size).

I'm now questioning what advantage a bazillion dollar Raymarine (or other) dept unit has?

I even found a unit that flush mounted in a teak panel that covers the old SR mariner holes. But - it's not "yachty" :)

Chris
 

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Feb 4, 2015
15
1981 Hunter 33 Green cove Springs marina, fl
Re: Oh - and don't laugh.

I was thinking same thing. And the toe is a cheap temperature sensor.
 
Feb 26, 2004
23,345
Catalina 34 224 Maple Bay, BC, Canada
I was thinking same thing. And the toe is a cheap temperature sensor.
How about using a bucket, grabbing some water and testing it? Toe, finger, thermometer. No need to deploy the boarding ladder (unless you have a walk through transom). Your boat, your choice.
 
Oct 24, 2010
2,405
Hunter 30 Everett, WA
I used a fish finder on the last 2 boats. It works great and I intend to add one to our newest boat. I like seeing a trend for bottom countours and I really like fish.

Ken
 
Sep 23, 2009
1,477
O'Day 34-At Last Rock Hall, Md
That beautiful wood panel looks very yacht y to me!
What kind of wood is it? Very nice finish.
BTW ,what do you do with two yacthits?
 
Sep 25, 2008
544
Bristol 43.3 Perth Amboy
Nice to have back up navigation equipment if for some reason you lose gps function. The knot meter/log can be useful for navigation. If you race, knot meter also important for fine tuning trim. The temp sensor is useful in racing when you are looking for certain currents like the gulfstream.
 
Apr 24, 2006
868
Aloha 32 Toronto, Lake Ontario
That beautiful wood panel looks very yacht y to me! What kind of wood is it? Very nice finish. BTW ,what do you do with two yacthits?
I do like the way that panel turned out. Covers up those two huge holes and still space for something else. I made it from 3/8 marine ply that is faced with teak. Used Epifines "wood finish" (5 coats, thinned 50%, 25%, 10%, 0, 0). It's attached with 3M commercial grade mounting tape. Love that stuff. It's mildly acid based so it's almost a structural bond, unaffected by moisture or temperature. It's about 1/32 thick so you can use a long razor knife to separate it if needed.

Two yachts? Who, me?

Chris