5.7 Sea Inlets and Discharges
Clasification Society 2024 - Version 9.40
Statutory Documents - MCA Publications - MGN 280 - Small Vessels in Commercial Use for Sport or Pleasure, Workboats and Pilot Boats - Alternative Construction Standards - 5 Weathertight Integrity - 5.7 Sea Inlets and Discharges

5.7 Sea Inlets and Discharges

  5.7.1 An opening below the weather deck should be provided with an efficient means of closure.

  5.7.2 When an opening is for the purpose of an inlet or discharge below the waterline it should be fitted with a seacock, valve or other effective means of closure which is readily accessible.

  5.7.3 When an opening is for a log or other sensor, which is capable of being withdrawn, it should be fitted in an efficient watertight manner and provided with an effective means of closure when such a fitting is removed.

  5.7.4 Inlet and discharge pipes from marine toilets should be provided with shell fittings as required by Section 5.7.2. When the rim of a marine toilet is less than 300mm above the deepest waterline of the vessel, unless otherwise indicated by manufacturer's recommendations, anti - syphon measures should be provided.

  5.7.5 For sailing vessels, overboard inlet and discharge pipes from marine toilets or holding tanks should be looped up within the hull to the underside of the deck.

Parent topic: 5 Weathertight Integrity
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