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Catalina/Capri 25/250 Sailor's Forums

Catalina 25 Specific Forum

securing tanks

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John V.
Admiral

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USA
559 Posts

Initially Posted - 05/03/2002 : 23:25:09

As I work through the retrofit of my 77 C25 I am at the stage where the old through hulls have been removed and replaced and I am ready to secure the new tanks. The fresh water tank being replaced has stringers in place but I am not sure how the tank should be secured. Also, the boat had no marine head only a porta potty. since the potty is illegal in the waters of the north channel, I am installing the tank and will need to glass in some support stringers but need to know how best to secure the tank. I think some type of strapping would work but if anyone has tackled this job let me know what you did. BTW, I found a handy way to control the dust while grinding out the old through hull "volcanos". Have someone hold the shop vac hose right by the grinder disk. most of the dust is picked up before it can get everywhere.

Thanks for the help

John V.
Nin Bimash II
77 C25 SK/SR #153

Edited by - on

Buzz Maring
Master Marine Consultant

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USA
1772 Posts

Response Posted - 05/04/2002 : 08:46:36

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>
I found a handy way to control the dust while grinding out the old through hull "volcanos". Have someone hold the shop vac hose right by the grinder disk. most of the dust is picked up before it can get everywhere.
<hr height=1 noshade id=quote></BLOCKQUOTE id=quote>

My boat is also a 1977. The water tank seems to be held in place by a plywood frame ... I'd hate to have to remove it, 'cause it seems to be in there really tight. If you'd like me to take a closer look at it, just let me know and I'll see if there is anything useful I can pass on about its installation.

BTW, my orbital sander has a built-in dust collector. I pull off the dust "hopper" and use duct tape to tape my shop vac to the tube on the sander ... 'works great for keeping dust out of the air.

Buzz Maring, C-25 SK/SR #68, "Freya"

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William Matley
1st Mate

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52 Posts

Response Posted - 05/04/2002 : 21:16:41

John,

I normally sail in the North Channel and as you say, you need to have the waste tanks up to code. I have purchased a slip in Cheboygan so now I'll explore the Mackinaw Island area of Lake Huron and Lake Michigan.

I just finished updating my toilet waste tank to a 15 gal Todd tank from West Marine. It is a tight fit under the athwart center seat but I got it in there. To mount it, I placed the tank in the position I wanted it in (slightly downward toward the pump out fitting) then I added wood 2x4's and such until I had it sitting just right. Then I took a can of Great Stuff foam and I foamed the whole pile of 2x4's creating a foam wedge under the tank. Before the foam set up, I placed a sheet of 3 mill plastic (a large garbage bad would do) over my foam and wood pile. Then I set my tank on top of the plastic to press the foam pile down. The foam creates a custom made wood and foam wedge support for the tank. I mounted the tank on top of plastic sheeting to be sure that any leakage would be contained. Then I took a nylon strap with one of those mini come-along tightening devices, mounted the ends on either side of the tank and tightened the tank into place.

I used this setup last year and it worked great! I had to redo my tank installation this spring so that I could replace my to-hull. I moved my thru -hull about 10 inches from the original location because it was just too crowded with my new tank. I have installed an anti-siphon loop in the water flush intake line to keep water from filling the bowl.

I hope this helps you.

Edited by - on

John V.
Admiral

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USA
559 Posts

Response Posted - 05/04/2002 : 23:22:00

Thanks for the info Buzz and William, The wood and foam sounds like a good way to go. Did you epoxy the 2x4s in place? As for the sanding, those old through hull volcanos are a lot of glass and resin to take out and my random orbit sander even with a 40 grit pad would keep me under the galley sink for hours. I decided to use a high speed grinder which produces a tremendous amount of dust. The nozel of the shop vac has to be right where the dust is being thrown from the wheel. My R.O. sander can take a vac hose also. I just like to avoid the glass dust because it can become so Itchy!! I'll try cutting some stringers to fit. I'm using a 12 gal tank from Catalina direct so I don't have to struggle to get it in. You mentioned that you were moving your through hull. Since I still have that one to do, do you have any advice on location. I have lots of room but I am wondering whether I should place it closer or further from the keel.

I will be sailing on the North channel In July. My base of opperations is my home on Neebish Island.

Thanks for your help

John V. Nin Bimash II
1977 C25 sk/sr #153

Edited by - on

William Matley
1st Mate

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52 Posts

Response Posted - 05/05/2002 : 15:49:11

I just let the foam act as a glue.

I had to move the through-hull because my new (larger) tank interfered with the operation of the valve. I moved it about 7 inches forward and 10 inches toward the keel. This put the valve forward of the new tank.

I sail out of Little Current. I take the Chi Chi Mon ferry to South Bay Mouth and drive to Little Current from there.

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OJ
Master Marine Consultant

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USA
4382 Posts

Response Posted - 05/07/2002 : 20:11:32

It's my understanding that if you have a porta-potti that's hooked up to the thru-deck fitting for the pump-out - you're legal in the North Channel - correct?

Steve Madsen
#2428
OJ (Ode to Joy)

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John V.
Admiral

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USA
559 Posts

Response Posted - 05/09/2002 : 00:30:18

I believe that in the Canadian waters of the North Channel you must have a type III marine head. (one that can only be pumped out) Putting a pump out into a porta potty defeats the whole concept, unless you have it bolted down. Then it's not really porta any more is it. If it's not secured you could still carry the thing up and dump it. Though I can't for the life of me figure why any one would do that. The best people to answer that question would be the Canadian Coast Guard.

The water there is beautifully clear though some anchorages have become weedy due to dumping of some kind. Probably the phosphates in dish soap. Be sure you use a type that is phosphate free.

John V. Nin Bimash II
77 C25 sk/sr #153

Edited by - John V. on 05/09/2002 00:32:58

Edited by - John V. on 05/09/2002 00:34:50

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OJ
Master Marine Consultant

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USA
4382 Posts

Response Posted - 05/09/2002 : 09:11:05

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>
Though I can't for the life of me figure why any one would do that.
<hr height=1 noshade id=quote></BLOCKQUOTE id=quote>

Simple, we don't have pump out stations on our lake, but we trailer to North Channel, so we need to accomdate both scenarios.

I admire (and share) your concern for the environment.

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