Dockside Discharge Units

  • Marine Sanitation has developed Australia’s own Dockside Discharge Unit to assist boaters remove their sewage waste easily and in as little as a couple of minutes with no mess at all.

    These Discharge Unit are located at marinas all around Australia and are easy to use. All you need to do is dock your boat along side, connect the pump out hose, turn on the Discharge Pump and your done in a couple of minutes!

    The discharge of sewage from vessels contributes to reduced water quality, poses a human health risk and decreases visual aesthetics of waterways.
    Environmental protection laws continue to be introduced throughout Australia to prevent the discharge of raw human sewage into the sea, waterways, rivers and lakes.
    Through most of Australia it is now law for the operator of any commercial marina to provide adequate and readily accessible waste collection facilities for use by all vessels moored at that marina.
    If this is not already in force where you operate…be sure, it’s coming!
    As a result of continued legislation changes, the increased demand for sewage collection facilities coupled with the rising volume of waste for disposal, has led to the development of the ‘Heavy Duty’ Dockside Discharge Unit.
    The Heavy Duty Pump can easily empty up to a 600 litre holding tank in only three minutes, giving it enough power and speed to cater for a variety of vessels, and remain efficient during peak periods. Ensuring that adequate waste disposal facilities are available for all vessels will not only protect marina operators from hefty fines, but will also help preserve our waterways for the future.


    • Marine grade 316 stainless steel cabinet with fine-brushed finish.
    • Base area less than 0.3 of a square metre.
    • Lockable access door.
    • Size 720 mm wide x 400mm deep x 900mm high.
    • Large 38mm suction pump with Marine grade bronze housing and double duckbill valves on both sides of the pump to prevent malfunctions.
    • Delivers 90 litres per minute at zero head.
    • 240 volt, 50 hertz, 1HP electric motor.
    • Will pass solids to 80% of port size.
    • Tough nitrile diaphram for long life.
    • Outlet connection is a 50mm BSP
    • 10 metres length, 38mm diameter, heavy-duty suction hose.
    • Crush resistant and petroleum resistant.
    • Vacuum rating exceeds 90Kpa.
    • Ball valve to close on completion of operation.
    • Bronze NATO style camlock for easy connection to boat deckplate.
    • Explosion proof motors for installations in close proximity to petrol or LPG dispensing units.
    1. Connect suction hose to waste deck plate of vessel using camlock provided.
    1. Open ball valve at end of suction hose.
    1. Switch to ‘ON’ position pump will operate for 3 minutes pumping approximately 200 litres.  (Typical holding tank capacity for recreational boats.  Minimum size holding tanks likely to be 70 litres).
    1. When suction pump stops, close ball valve, remove hose and return to cabinet.
    • Install the unit in a convenient position for both accesses for boats and connection to sewer.
    • Connect unit to sewer via:

    –          up to 10 metres using 50mm pipe

    –          up to 20 metres using 60mm pipe

    –          up to 30 metres using 75mm pipe

    –          up to 40 metres using 90mm pipe

    –          over 40 metres using 100mm pipe

    • Contact your local sewerage authority for local requirements.
    • Shipping weight is 96kg, dry.
    • Advice and assistance on installation available.
    • Wiring diagrams provided.