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#1 2022-08-15 18:57:33

John Becker

Size of holding tank on Mark 3

Can anyone tell me the capacity of the holding tank on my Mark 3?  It is located between the head and hull, forward of the main cabin bulkhead, not under the V-Berth as in some other models.


#2 2022-08-18 15:27:35

Superior Blue

Re: Size of holding tank on Mark 3

The Mk V brochure states 16 gal., but that isn't exactly what you are looking for.

Our Mk II has a similar configuration to yours, but the manual doesn't state the capacity.  The original tank was a fabric bladder which some PO had abandoned without removing after the contents hardened.  They then converted the only water tank under the V-berth into a holding tank!  The water tank/holding tank has been cleaned out, and is now used for storage. 

We replaced everything with a composting head.

Phil Peterson
Superior Blue
1973 C&C 27 Mk II
Bayfield, WI


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