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Chapter 4
Gray Water System
If installed, the gray water system is used in areas where
dumping fresh water waste products overboard is
prohibited. Gray water originates from on board sinks and
showers. With this system all the gray water is pumped into
the waste holding tank via the shower sump pump system
verses directly overboard. The holding tank periodically
needs be to be pumped out by a marina pump out station
through the “waste” fi tting on the deck. Use the waste
water portion of the monitoring panel at the ship’s main
control panel to check waste water levels.
TYPICAL WASTE WATER SYSTEM
Overview
The waste water system on your boat includes a waste tank
located in the engine room. Besides the tank the system
features a vacuum style toilet and waste pump-out fi tting
mounted at the port aft deck. A monitor panel shared
with the fresh water system displays the waste tank level
when activated.
If installed, a macerator (overboard discharge pump)
diverts waste through a hull bottom seacock (where
dumping laws permit).
WASTE TANK HOSE FUNCTIONS
EQUIPMENT FUNCTION
Pump Out To Pump Out Deck Fitting
Vent To In-Line Vent Filter
Waste-In From Forward (Salon) Head
Overboard Dis-
charge
To Macerator (Overboard Discharge
Pump) Located In Engine Room
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