47
MARINE SANITATION
SYSTEM
________________
All vessels with fi xed toilets that are oper-
ated on the waterways of the United States
and some foreign countries are required
to be equipped with an operable Marine
Sanitation Device (MSD). The Marine Sani-
tation System in your 352 MY is a Waste
Tank system, defi ned by the United States
Coast Guard as a Type III System. Type III
Systems permit operation of the toilet with-
out the direct discharge of untreated waste
after every fl ush. Type III Systems can be
discharged at marina dockside pump-out
stations or, if in coastal waters, at least three
(3) miles offshore.
NOTE: Overboard discharge capability must
remain inoperative while within the 3 mile
limit. This is accomplished by closing the
macerator discharge thru-hull valve (See
Mechanical Layout on Page 151 and 152,
which illustrates the location of the macera-
tor discharge thru-hull valve).
Your 352 MY is equipped with one of the
following Marine Sanitation Systems, de-
pending on the option you chose from your
Silverton dealer at the time of purchase:
• SeaLand Vacufl ush Toilet
• Jabsco Quiet-Flush Electric Toilet
(Fresh Water)
• Jabsco Quiet-Flush Electric Toilet
(Raw Water)
Each system is described as follows:
SeaLand Vacufl ush Toilet
This system is operated by vacuum, com-
bined with a small quantity of water sup-
plied by the pressurized fresh water system
(approximately one (1) pint per fl ush) and
is controlled by DC electrical power. Each
toilet is equipped with an integral vacuum
breaker that prevents a backfl ow of contami-
nated water into the potable water supply.
Vacuum energy, supplied by the Vacuum
Pump, is stored in a Vacuum Tank and is
monitored to maintain a certain level. The
Vacuum Pump is controlled by an electrical
breaker switch, located on the AC/DC Elec-
trical Panel (See AC/DC Electrical Panel
Layout on Page 159, which illustrates the
location of the breaker switches). As the
toilet is fl ushed, vacuum energy is depleted
and the Vacuum Pump will automatically
activate to restore the required level. The
Vacuum Pump will operate for approxi-
mately 30 to 90 seconds until the system
reaches the required operating vacuum
level. Toilet waste, both liquid and solid, is
removed by the vacuum energy and water
combination to a Waste Tank having a ca-
pacity of sixty (60) gallons (See Mechani-
cal Layout on Page 155 and 156, which
illustrates the location of the Waste Tank).
This waste is stored in the Waste Tank until
pumped out at a proper facility. The Waste
Tank is equipped with an electronic Waste
Level Gauge, which monitors the volume of
waste in the tank for your convenience in de-
termining when pump-out is required (See
photograph on Page 96, which illustrates the
location of the Waste Level Gauge).
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