larger holding tank in a 33 Cat Ketch

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Joined: Thu Dec 14, 2017 7:24 pm
Location: Stony Point, Hudson River New York USA

larger holding tank in a 33 Cat Ketch

Post by Erik »

Hi All

Has anyone replaced the 10 gal holding tank with a larger one in a 33 Cat Ketch (hull 74 ). Mine is located on the port side just forward of the water tank. It looks like there is room forward of the holding tank under the bench on the port side.


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Location: Valdez - AK

Re: larger holding tank in a 33 Cat Ketch

Post by Sailing-61-North »

Erik - I know your post was a few years ago. How did it work out? I removed mine so I do have photos of the space.
S/V Arctic Tern
Freedom 33
1981 - #37
Prince William Sound - Alaska

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Re: larger holding tank in a 33 Cat Ketch

Post by arrancomrades »

I put one into the toilet compartment of my UK 1987 35 CK in 2002. It's of s/s and about 1.5m height, five sided in the vertical to fit behind the door. Internal pump-up tube to the bottom, fills at the top, drains at bottom plus breather pipe to topsides just below the rail. Probably capacity about 80l. Very seldom used as our cruising grounds don't demand them. 2x 3-way valves in the 1.5" outlet pipes - a real pain to fit when I was much younger. Not sure if I have photos and boat inaccessible due to lockdown.

I made a full-size template in MDF to check fit and access. Fabricator was delighted as he usually gets a 'fag-packet' sketch.

Please advise if I should search the archives.
Mike Johnston

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