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Form B of IAPP Certificate (MARPOL Annex VI)

The IAPP (International Air Pollution Prevention) Certificate consists of Form A or Form B annexed to the certificate.

What is Form B?

Form B is attached to the IAPP certificate for ships fitted with an Exhaust Gas Cleaning System (EGCS)
👉 commonly called scrubber-fitted ships.

Form A vs Form B 

Form A                Form B
For ships without scrubber                    For ships with scrubber (EGCS)
Compliance by low sulphur fuel                    Compliance by equivalent method
Simple fuel sulphur limits                                    Detailed EGCS particulars
No EGCS details                    EGCS type, mode & monitoring

What Form B Contains 

Form B includes details of:

  • Type of EGCS (open loop / closed loop / hybrid)

  • Approved operating mode(s)

  • Washwater discharge criteria

  • SO₂/CO₂ ratio limits

  • Continuous emission monitoring system (CEMS)

  • Record book requirements

  • Bunker fuel sulphur content (may exceed 0.50%)

Legal Basis

  • MARPOL Annex VI

  • Regulation 4 – Equivalent methods

  • Regulation 14 – Sulphur oxides (SOx)


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