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TB 55-1900-206-14
(2) Existing Army Watercraft (>65 feet) equipped with a Type I MSD installed before 31 January 1978 is in
compliance so long as the device remains satisfactorily operable.
(3) Army Watercraft personnel shall not dispose of used solvents or other industrial wastes to MSDs or graywater
collection systems or dump them down sinks or deck drains. They shall containerize used solvents and industrial
wastes for disposal ashore.
(4) Army Watercraft personnel shall properly operate and maintain installed MSDs to prevent the overboard discharge
of untreated or inadequately treated sewage within the Territorial Seas (within 3 nm of the U.S. shore).
(5) While in port or when transiting between 0-3 nm of shore, vessels shall collect graywater in installed MSDs or
graywater collection systems. If a vessel is not equipped to collect graywater, the vessel may discharge the
graywater directly overboard unless prohibited by State and/or Local requirements.
(6) Army Watercraft shall not discharge any treated or untreated sewage into freshwater lakes (excluding the Great
Lakes), freshwater reservoirs or other freshwater impoundments, or into rivers not capable of interstate navigation.
(7) While operating beyond 3 nm from shore, Army Watercraft may discharge sewage and graywater directly
overboard. Vessels equipped with a USCG-approved Type I or II MSD shall treat the sewage prior to discharge.
b.
Exceptions. Army Watercraft may discharge minimal quantities of sewage within 3 nm of shore under certain
circumstances with "due consideration for the environmental effects". Vessels may discharge sewage overboard
within 3 nm of shore only under the following conditions:
(1) The vessels holding capacity is insufficient because transit time through the 0-3 nm zone from shore is of a long
duration. The vessel shall minimize any necessary sewage discharge and shall pump out as far as possible from
land.
(2) The vessel is conducting or participating in military operations or exercises (including training or readiness
evolutions) within the 0-3 nm zone from shore and terminating operations to discharge sewage to a land-based
collection facility or beyond 3 nm from shore would impair the operational effectiveness of the mission.
(3) The vessel is at anchor or moored where sewage reception facilities or services are not reasonably available, or
where use of such services or facilities is not feasible because of foul weather, poor visibility, or unsafe
environmental conditions, and where on board retention of sewage is not practicable.
(4) The vessels MSD is inoperable because of equipment malfunction or maintenance, its use would interfere with an
on-going repair effort, or its use would pose a hazard to the health or welfare of the crew. Vessels shall minimize
those periods prompting use of this exemption. Under this exemption, vessels shall discharge sewage underway as
far as possible from shore. If in port, the vessel shall obtain concurrence from the environmental manager of the
shore activity before discharging overboard.
Section IV. GARBAGE
8. Plastic Garbage.
a.
Federal law prohibits the discharge of plastics to the marine environment. Therefore, Army Watercraft shall not dump
plastic garbage anywhere into or upon any waters. Plastic garbage will be retained onboard, stored to meet sanitation
requirements, and disposed of at shoreside facilities.
b.
Vessels should minimize the volume of plastic material taken to sea that may become waste. For example:
(1) Plastic disposable items should be replaced with non-plastic items where possible.
(2) If appropriate, remove plastic wrapping and shipping materials from supply items before bringing them on board.
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