Waste and Sanitation Systems
10.5
Figure 10.10
10.4 Head System
All vessels with fixed toilets operating on the water-
ways of the United States and some foreign countries
are required to be equipped with an operable Marine
Sanitation Device (MSD). The marine sanitation system
aboard your boat is a waste tank system defined by the
United States Coast Guard as a Type III System. Type
III systems permit operation of the toilet without direct
discharge of untreated waste after every flush. Type III
systems can be discharged at a marina, dock side pump-
out stations or, if in coastal waters, at least three miles
offshore. Please refer to Fig. 10.20 for the black water
plumbing layout.
NOTE: Overboard discharge capabilities must remain inop-
erative while within the 3 mile limit. Overboard discharge valve
must remain closed.
10.4.1 Manual Head System
The manual head system (Fig. 10.11) is designed to use
raw water. This marine toilet comes with a compact white
vitreous china bowl and is equipped with a hand pump.
(refer to the Water Systems chapter in this manual for
details on raw water supply for the manual toilet).
10.4.2 Electric Head System
The optional electric head (see Fig. 10.12) is designed to
use fresh water. The 12 volt electric marine toilet comes
with a compact white vitreous china bowl and is equipped
with a dual function pump which eliminates the need for
hand pumps and dry bowl valves. With the push of a
single switch, the self-priming flush pump rinses the bowl.
The switch is located on the forward shower bulkhead.
Figure 10.11
The toilet is controlled by a breaker switch at the main
DC panel (see the DC Electric System chapter in this
manual).
Do not use chlorine-based or caustic cleaning
agents, or chemicals such as a drain opening prod-
uct in your head systems. Use of these products
may cause serious damage to the system’s seals
and hoses.
NOTE: Consult the toilet manufacturer’s OEM manual for
additional details regarding operation, care and maintenance.
Figure 10.12
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