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is a deck pump-out fitting conveniently located in the anchor well from
which your marina can pump out the tank.
All tanks· have a 3" access cover on the top for inspection and clean-
out. The use of deodorizing chemicals as sold for recirculating toilet
systems is recommended to control odor. The tank and head should be
winterized by cleaning and treating them with a "Winterguard" type
antifreeze. Winterguard is a non-toxic antifreeze which can also be
used to winterize your fresh water systems.
In certain sailing waters where pump-out facilities are not available it
may be necessary to install onboard holding tank pump-out equipment. We
recommend a 1-1/2" hose tee be placed in the line from the tank to the
deck fitting and that a pump be installed from this tee. The pump can
either be a Whale Gusher GP-10 manual diaphragm pump, Whale urchin
manual diaphragm pump or an electric Jabsco Macerator pump (model
#17260-0003). The discharge from the pump can either be 1ead to a
seacock or a hose for dockside tanks. Please refer to the latest
regulations for your area to determine which system is best for your
boat. A vented loop is recommended in all head discharge lines that
lead overboard. See the drawings at the back of this manual for details
of head plumbing systems.
Some boats are set up, as an option, with direct overboard discharging
capability. This system incorporates a Y valve at the tank inlet
fitting below the bunk top for redirection of wastes overboard.
The overboard discharge seacock in this system is a 1-1/2" seacock with
thru hull 1ocated below the vanity cabinet in the head. Make certain
that this seacock is open when pumping overboard; otherwise pressure
will drive the waste elsewhere or rupture internal valves in the head
system itself.
When leaving the boat unattended close all seacocks associated with the
head system.
Do not flush paper towels, rags, sanitary napkins, etc. into the system
as clogging overflow and damage will occur.
XII. CENTERBOARD SYSTEM
One of the most unique features of the CD-270 is that it is a
centerboarder. Unlike the other Cape Dory yachts which feature deep
draft full keels, the 270 has a shoal draft keel with an efficient
molded fiberglass centerboard housed in centerboard trunk, integrally
molded with the hull.
The centerboard itself is molded in two halves with a unidirectional
laminate, additional reinforcement is added in areas of stress (i.e.,
pennant pin, centerboard pin, and hull intersect). The two halves are
clamped together with a 25# lead insert placed at the lower end. The
entire board is then filled with a microsphere and resin mixture forming
an internal bonding matrix for the centerboard.
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