What is ozone depletion, its effects, the gases with ozone depleting potential, ODP classification, and the controls and recordkeeping for such gases?

flowchart LR
    A[Ozone-depleting substances] --> B[Montreal Protocol\nAnnexes A/B/C/E]
    B --> C[MARPOL Annex VI\nReg 2.1.2.25]
    C --> D[Prohibition of\ndeliberate emissions]
    A --> E[ODP per\nAnnexes I and II\nEU Reg 1005/2009]
    F[Ships with\nrechargeable systems] --> G[Ozone-depleting\nSubstances Record Book]
    G --> H[Log recharging\nmaintenance\ndischarges]

• Ozone depletion: depletion of the ozone layer caused by ozone-depleting substances
• Effects: environmental impact; transboundary environmental problem with global impact
• ODS gases: Halon 1211, Halon 1301, Halon 2402, CFC-11, CFC-12, CFC-113, CFC-114, CFC-115, carbon tetrachloride, methyl bromide
• ODP classification: figure in Annexes I and II of EU Regulation 1005/2009 representing potential effect on the ozone layer
• Controls: Montreal Protocol phase-out; MARPOL Annex VI Reg 2.1.2.25 prohibits deliberate emissions
• Recordkeeping: Ozone-depleting Substances Record Book required from 1 July 2010 per UK MIN 395 §18
• Instrument: Montreal Protocol on Substances that Deplete the Ozone Layer, MARPOL Annex VI, EU Regulation 1005/2009, UK MIN 395