thru hulls - scared - need help - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > General Interest > General Discussion (sailing related)
 Not a Member? 


Like Tree2Likes
Reply
 
LinkBack Thread Tools
  #1  
Old 09-04-2013
boknows's Avatar
jimbo
 
Join Date: Jul 2013
Location: georgia
Posts: 91
Thanks: 18
Thanked 0 Times in 0 Posts
Rep Power: 2
boknows is on a distinguished road
thru hulls - scared - need help

I am wanting to put a gps, chartplotter, fish finder combo in my boat but from what I hear the hull is to thick. I have a 45 foot boat and the old owner claims it is 3/4 inches thick. Is it possible to drill half way thru so that the thickess is less than 5/8 (which is what is the max thickness that garmin said it would work thru)? any help is much appreciated.

Thanks
__________________
Sail Sail Sail your boat.... Gently down the stream.....
Reply With Quote Share with Facebook
  #2  
Old 09-04-2013
Senior Member
 
Join Date: Jun 2004
Location: western LI sound, L.I., N.Y.
Posts: 453
Thanks: 1
Thanked 10 Times in 10 Posts
Rep Power: 11
HUGOSALT is on a distinguished road
Re: thru hulls - scared - need help

One would think there would already be a transducer installed in a
boat that size already.
If not try to sound out different thinner locations in hull, maybe up forward.
Can/has been done but must be solid location which could
be hard to tell before drilling.
Cautionary tale...few years back in the boatyard on a quiet Sunday early in the spring heard strange noise coming from inside a nearby
boat, was one of the local marine electronics installers half laughing
half crying...he was replacing an old transducer in just such a install
as you propose. Seems hull was drilled a bit to much as when he
went to remove the old transducer that was siliconed/epoxied? in
place out came the transducer and the very thin part of the hull
it was attached to...leaving a a nice hole in the hull...very scary
thinking of what might have been had it decided to give way
one night when boat fell off a wave!
A proper thru hull might be less scary I think!
Reply With Quote Share with Facebook
  #3  
Old 09-04-2013
Senior Member
 
Join Date: Jul 2013
Posts: 122
Thanks: 2
Thanked 2 Times in 2 Posts
Rep Power: 2
krazzz is on a distinguished road
Re: thru hulls - scared - need help

You should be able to do that. How about drilling a small test hole to check thickness? They also make long sending units to accommodate hulls that are on the thicker side. 3/4" seems excessively thick to me and not very likely.
Reply With Quote Share with Facebook
  #4  
Old 09-04-2013
PaulinVictoria's Avatar
Senior Member
 
Join Date: Aug 2009
Location: Sidney, BC
Posts: 1,841
Thanks: 7
Thanked 42 Times in 41 Posts
Rep Power: 5
PaulinVictoria is on a distinguished road
Re: thru hulls - scared - need help

Install it on the inside, or drill a hole and install it on the outside. Don't try and drill part way through a hull, you have no idea just how much you will weaken it.
__________________
Orange Crush
1974 C&C27 MkII

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #5  
Old 09-05-2013
kunkwriter's Avatar
Member
 
Join Date: Jan 2013
Location: San Jose
Posts: 46
Thanks: 5
Thanked 3 Times in 3 Posts
Rep Power: 0
kunkwriter is on a distinguished road
Re: thru hulls - scared - need help

You may want to try it without doing anything but cleaning the area first. I put an inhull transducer, garmin, on a 1973, 36 foot sailboat, that was very thick and it worked fine. This was two years ago. I sanded the area clean and used antifreeze as the liquid inside the casing, but had no problems. If that doesn't work, then you have to figure where to go from there. Good luck.
Reply With Quote Share with Facebook
  #6  
Old 09-05-2013
MikeOReilly's Avatar
Senior Member
 
Join Date: Apr 2010
Location: Thunder Bay, Ontario
Posts: 1,042
Thanks: 93
Thanked 44 Times in 39 Posts
Rep Power: 5
MikeOReilly is on a distinguished road
The transducer is likely made by Airmar. They make lots. I'm sure you could find a long shaft alternative that would allow a proper installation.
StormBay likes this.
__________________
Why go fast, when you can go slow.
Reply With Quote Share with Facebook
  #7  
Old 09-05-2013
Senior Member
 
Join Date: Oct 2007
Location: Brazil
Posts: 893
Thanks: 3
Thanked 20 Times in 19 Posts
Rep Power: 7
copacabana is on a distinguished road
Re: thru hulls - scared - need help

What transducer does the chartplotter/fishfinder come with? Is it the kind that is meant to be mounted on the transom of a small boat? If yes, you should be able to mount it inside the hull and it will read through your hull (providing it isn't a cored hull). You can do a simple test by getting some children's modelling clay (plasticine) and making a little "pool" in the location you want to install the transducer. Fill the pool with water and let the transducer sit in the water. If you get a good signal, you're ready to install it permanently. If you don't get a signal, first make sure the transducer is angled to shoot straight down (and not angled to shoot off to the side) or try another location in the hull. Once you find a good location, it's simply a matter of cleaning and drying the spot and fixing the transducer in place with a big gob of silicone sealant. Be sure there are no bubbles in the silicone. If, for whatever reason, you want to move or remove the transducer, it is easy to cut it out of the silicone with an razor knife. You may find you installed it in a place that has some turbulence when underway and thus doesn't give you a good signal. If so, move it to another place. Ahead of the keel should be fine. Post a pic of the transducer if you can.
__________________
Vindö 50

Last edited by copacabana; 09-05-2013 at 07:08 AM.
Reply With Quote Share with Facebook
  #8  
Old 09-05-2013
zeehag's Avatar
snake charmer, cat herder
 
Join Date: Nov 2008
Location: refitting a formosa in exotic tropical locations....
Posts: 1,639
Thanks: 4
Thanked 23 Times in 23 Posts
Rep Power: 6
zeehag is on a distinguished road
Re: thru hulls - scared - need help

my garmin transducer reads nicely thru my 2 inch thick hull when planted in a well of oil. try ti you will like it. no need to make holes in boat hull just for a transducer.

i have 2 depth sounders--one forward and one aft..aft is thru hull fitted, and forward is set into oil well..works perfect and is accurate.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

formosa 41 and ericson 35mII
cruising tropical mexico at present, working my way southward



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #9  
Old 09-05-2013
boknows's Avatar
jimbo
 
Join Date: Jul 2013
Location: georgia
Posts: 91
Thanks: 18
Thanked 0 Times in 0 Posts
Rep Power: 2
boknows is on a distinguished road
Re: thru hulls - scared - need help

Great info guys. This place is such a good resource. I will try it before I drill. I was nervous so that means I have good instincts or good end stinks. lol Thanks
__________________
Sail Sail Sail your boat.... Gently down the stream.....
Reply With Quote Share with Facebook
  #10  
Old 09-05-2013
zeehag's Avatar
snake charmer, cat herder
 
Join Date: Nov 2008
Location: refitting a formosa in exotic tropical locations....
Posts: 1,639
Thanks: 4
Thanked 23 Times in 23 Posts
Rep Power: 6
zeehag is on a distinguished road
Re: thru hulls - scared - need help

i am not aguy but i will take the thanks---make the well deep and only cover the transducer end so it doesnt come dry in a case of extreme heel....
have fun--it does work.

i used a piece of pvc pipe glued to hull interior and filled with about 2 inches of oil---cooking oil--extra virgin olive variety...it wont come out unless i knock down.



omg you got help from a female...omg run fast--rodlmao
Seaduction likes this.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

formosa 41 and ericson 35mII
cruising tropical mexico at present, working my way southward



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Is Anyone Else Scared? Harborless General Discussion (sailing related) 25 07-04-2013 03:56 AM
Scared the CRAP out of me! MedSailor General Discussion (sailing related) 19 06-03-2013 05:57 PM
'Ne'w boat - excited and a little scared..... GrahamO Introduce Yourself 11 08-13-2012 05:39 PM
Are you scared of wood? CharlieCobra General Discussion (sailing related) 35 04-05-2010 02:32 PM
wasn''t anyone scared? lmonson General Discussion (sailing related) 10 12-30-2005 10:20 AM


All times are GMT -4. The time now is 04:00 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.