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-   -   Water Tanks - Repair/Replace - Opinions (http://www.trawlerforum.com/forums/s3/water-tanks-repair-replace-opinions-25283.html)

FlyWright 05-08-2016 09:46 PM

What is your boating background? Have you worked in the field of maintenance?

michael1801 05-09-2016 05:30 AM

wall thinning where the tank sits
 
you will find more than one leak or area of wall thinning where the tank sits on those supports. So unless you do your own welding, go for a new plastic tank. Remove the tank, inspect, take it to a tank shop, and decide.

Delta_JimS 05-09-2016 11:00 AM

Carl,

New paint looks great. Ditto the water tanks.
Thru hulls in Transon were from a long-ago diesel heater mounted in the ER.
Oil leak is likely from a worn hydraulic rudder cylinder.(as best I could tell)

CarlinLA 05-09-2016 02:16 PM

Quote:

Originally Posted by FlyWright (Post 440496)
What is your boating background? Have you worked in the field of maintenance?

Thanks for asking.

Satori is my sixth boat. The first was a 15-foot tri hull with a beautiful hundred horse Evenrude Starfire. Glastron 19-foot came next, then the little lifeboat conversion, then the Cal 25, the Newport 30, and now the 34-foot Fu Hwa.

Loved all of them.

No work in maintenance. Cursed as a jack of all trades but master of none... that, and no financial skills that would have made me wealthier over the years such that I could have purchased higher quality vessels that were in better shape.

I enjoy working with my hands and the more demanding the job the more rewarding a successful outcome.

I am quite fortunate to find myself in these dire straits.

CarlinLA 05-09-2016 02:18 PM

Quote:

Originally Posted by michael1801 (Post 440515)
you will find more than one leak or area of wall thinning where the tank sits on those supports. So unless you do your own welding, go for a new plastic tank. Remove the tank, inspect, take it to a tank shop, and decide.


You got that right. Aluminum tsnks have been retired and plastic tanks are 70% in.

CarlinLA 05-09-2016 02:23 PM

Quote:

Originally Posted by Delta_JimS (Post 440609)
Carl,

New paint looks great. Ditto the water tanks.
Thru hulls in Transon were from a long-ago diesel heater mounted in the ER.
Oil leak is likely from a worn hydraulic rudder cylinder.(as best I could tell)

Appreciate the note...

Diesel heater... guessed it was for a generator.

Still undecided about closing off the thru hulls.. Perhaps having the inside capped and brazed or glued tight.

FF 05-10-2016 05:49 AM

"Still undecided about closing off the thru hulls.."

Capping does not solve the thinning of a thru hull.

On inspected vessels the thru hull is sometimes pulled for inspection .

What keeps the water out of the boat is the sea cock, .

CarlinLA 05-20-2016 11:18 PM

2 Attachment(s)
pretty close to the end-game for the water tank replacement...

Ronco plastic tanks are in...

Supported on 3/4 marine ply...

Secured with aluminum straps inboard and resting against the stock backing-blocks outboard.

Will be changing a bolt or two to get the right length and a bit of touch-up painting but not much more to do in the lazzerete... happy about that.

Super clean back there with the fresh paint - love that.

Best to all and thanks for hanging with me through the laz refresh.

CarlinLA 05-20-2016 11:40 PM

Quote:

Originally Posted by Irish Rambler (Post 426525)

I refitted the tank, spray foamed the bed underneath, between the rear of the tank and hull, then sheeted the sides and front with expanded polyurethane.

As we say in our family business motto, Quality is remembered long after price is forgotten.

Spray foam was strongly considered... chose the plywood base - I wont likely own the boat ten years from now to verify whether ply is better than foam.

FlyWright 05-21-2016 10:15 AM

To my untrained eye, it appears these tanks will shift in rough seas, but I'm probably wrong.

Did you find a new solution for attaching the posts besides the aforementioned household adhesive/sealant? If the strap is attached to a weakened upright, then the strap is only as strong as the post attachment.

I see the one post is lagged into the base. Is the base attached to the floor and wall?

CarlinLA 05-21-2016 11:05 AM

Quote:

Originally Posted by FlyWright (Post 444816)
To my untrained eye, it appears these tanks will shift in rough seas, but I'm probably wrong.

Did you find a new solution for attaching the posts besides the aforementioned household adhesive/sealant? If the strap is attached to a weakened upright, then the strap is only as strong as the post attachment.

I see the one post is lagged into the base. Is the base attached to the floor and wall?


Yes... would always be concerned about tanks shifting... but the strap seemed like the most efficient solution.

The latex glue is not nautical but it is good for 200-psi shear - plenty for a 10-square inch baseplate against 350-lbs... especially with a through-bolt anchor at the top of the post through the deck beam. That 350-lb load is not a point load either - the force is distributed across several attachment locations.

The lag on the ply base is just to keep it from scooting around - there are also screws for the base on the bulkhead side.

I'm open to future mods if I don't like the performance of the system as installed.

Jeff G 06-16-2019 07:26 PM

I recently purchased a 36’ Marine Trader. It has (3) water tanks totaling 150 gals. The center tank is much larger than the hatch hole. Someone suggested that this was all installed before the top of the fiberglass hull was attached, and allows ZERO room in the lazaretto for maintenance. I’ve been having a hard time finding a knowledgeable and available boat person (which seems odd since I am on Lake Union). Any thoughts???


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