{
  "url": "https://openlegislation.uk/merchant-shipping-control-of-pollution-by-noxious-liquid-substances-in-bulk-regulations-1987/regulation-13",
  "json_url": "https://openlegislation.uk/merchant-shipping-control-of-pollution-by-noxious-liquid-substances-in-bulk-regulations-1987/regulation-13.json",
  "legislation": "uksi/1987/551",
  "legislation_title": "The Merchant Shipping (Control of Pollution by Noxious Liquid Substances in Bulk) Regulations 1987",
  "legislation_url": "https://openlegislation.uk/merchant-shipping-control-of-pollution-by-noxious-liquid-substances-in-bulk-regulations-1987",
  "path": "regulation/13",
  "kind": "regulation",
  "number": "13",
  "heading": "Category D residual mixtures—discharge",
  "text": "The discharge into the sea of a Category D residual mixture is prohibited except where—\n(a) (i) the ship is proceeding on its way at a speed of at least 7 knots in the case of a self-propelled ship or at least 4 knots in the case of a ship which is not self-propelled;\n(ii) the concentration of the substance in the effluent is not greater than one part of the substance to ten parts of water; and\n(iii) the discharge is made at a distance of not less than 12 nautical miles from the nearest land; or\n(b) the discharge is made in accordance with regulation 11 as it applies to Category C residual mixtures.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1987/551/regulation/13",
    "retrieved_at": "2026-10-29T16:28:56.299532+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}