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Surveys, audits and PSC · Lesson 3 of 7 · 16 min

ISM Code audits: DOC, SMC and what auditors look for

You will know how the DOC and SMC audit cycle runs, how findings are graded and closed, and how a port State officer turns a broken item into an ISM deficiency.

The ISM Code is the one instrument that turns a pile of separate rules into a system. It does not tell you how to service a lifeboat or test a fire pump. It asks whether the company has procedures for doing those things, whether people follow them, whether problems are reported and fixed, and whether management notices when the system is not working. That is why a seized davit sheave can end up recorded not only as a life-saving appliance deficiency, but as an ISM deficiency against the whole company.

Port State control figures show how often this happens. In the Tokyo MOU region in 2025, “ISM” was the second most frequent detainable deficiency (200 cases), just behind fixed fire-extinguishing installations, and “maintenance of the ship and equipment (ISM)” was in the top ten. The Tokyo MOU singled out the “constant high number and high percentage of ISM related detentions over the years” in its foreword.

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In this lesson

  • Shipboard ISM audit: which findings are non-conformities?
  • In plain words
  • In detail
  • What the rules say
  • Flag and class notes
  • Key numbers
  • What inspectors find
  • Quiz: 6 questions

Shipboard ISM audit: which findings are non-conformities?

The International Safety Management (ISM) Code asks every shipping company to write down how it runs its ships safely, to do what it wrote, to check that it works, and to fix what does not.

The written system is called the safety management system (SMS). When an auditor confirms that the company’s office runs the SMS properly, the company gets a Document of Compliance (DOC). When a ship is audited and found to run the SMS on board, the ship gets a Safety Management Certificate (SMC). Both last up to five years and are checked in between.

Auditors look for evidence: records, interviews, and what they see people doing. When something required is not being done, they write a non-conformity. When the gap is serious enough to put people, the ship or the environment at real risk, it is a major non-conformity, and the certificate is at stake until it is fixed.

The company must also audit itself: every ship and office at least once a year.

Where the ISM Code applies

The ISM Code was adopted by resolution A.741(18) and made mandatory by SOLAS chapter IX: from 1 July 1998 for passenger ships, oil and chemical tankers, gas carriers, bulk carriers and cargo high-speed craft of 500 gross tonnage and upwards, and from 1 July 2002 for other cargo ships and mobile offshore drilling units of 500 gross tonnage and upwards, on international voyages. It has been amended five times: MSC.104(73), MSC.179(79), MSC.195(80), MSC.273(85) and MSC.353(92), the last in force on 1 January 2015.8

The parts of the SMS an auditor walks through

ISM section What the auditor checks
2 Safety and environmental protection policy The policy exists, is known and is implemented
3 Company responsibilities and authority Who the “Company” is, and the documented responsibilities
4 Designated person(s) A DPA ashore with direct access to top management, known on board
5 Master’s responsibility and authority The master’s overriding authority and review of the SMS
6 Resources and personnel Qualified crew, familiarisation, training, working language
7 Shipboard operations Plans and instructions for key operations
8 Emergency preparedness Drills, contingency plans, records
9 Reports and analysis of non-conformities, accidents and hazardous occurrences Reporting, investigation, corrective action
10 Maintenance of the ship and equipment Inspections, defect reporting, critical equipment, records
11 Documentation Document control, valid versions on board
12 Company verification, review and evaluation Internal audits and management review

Section 10 is where survey and service work meets the SMS. The company must have procedures to keep the ship in line with the rules, hold inspections at appropriate intervals, report non-conformities with their causes, take corrective action and keep records. It must also identify equipment and technical systems “the sudden operational failure of which may result in hazardous situations” (critical equipment, such as the emergency generator, steering gear or fire pumps) and include their regular testing in routine maintenance.

The certification cycle

Step Company (DOC) Ship (SMC)
Interim Interim DOC for a new company or a new ship type, valid up to 12 months Interim SMC for a new ship, a ship new to the company or a change of flag, valid up to 6 months; the Administration may extend it in special cases by up to 6 months
Initial Office audit with evidence that the SMS has run for at least 3 months, and on at least one ship of each type for 3 months Shipboard audit with evidence of at least 3 months’ operation on board and ashore, including an internal audit
Periodic Annual verification within 3 months before or after each anniversary date of the DOC At least one intermediate verification; if only one, between the 2nd and 3rd anniversary dates
Renewal Within 3 months before expiry, completed before expiry Same
Additional When the Administration has clear grounds, for example after a PSC detention or a long lay-up Same

The annual DOC audit must check the statutory and class records of at least one ship of each type covered by the DOC. Renewal completed within three months before expiry keeps the old expiry date as the start of the new five years. If a new SMC cannot be placed on board in time after a successful renewal, the existing one may be endorsed for up to five months; if the ship is not at the port of verification when the SMC expires, the Administration may extend it by up to three months.3

How an audit is run

The 2023 Guidelines on implementation of the ISM Code by Administrations, resolution A.1188(33), describe the steps:

  1. Application by the company to the Administration or its RO, which nominates the lead auditor.
  2. Document review of the safety management manual. If the system is not adequate, the audit is delayed until it is corrected.
  3. Preparation: the auditor reviews flag records, PSC reports and class and accident reports, and sends an audit plan.
  4. Opening meeting, then collection of objective evidence through interviews, document examination and observation of work.
  5. Grading of findings as observations, non-conformities or major non-conformities, against the specific provisions of the Code.
  6. Closing meeting with senior management, then a written audit report to the company, which should give the ship a copy of the shipboard audit report.
  7. Corrective action by the company, normally within three months, with follow-up audits as agreed.

Grading findings

Finding ISM Code definition (section 1.1) Typical consequence
Observation A statement of fact made during an audit and substantiated by objective evidence Note for improvement
Non-conformity An observed situation where objective evidence indicates the non-fulfilment of a specified requirement Corrective action, normally within 3 months
Major non-conformity An identifiable deviation that poses a serious threat to the safety of personnel or the ship or a serious risk to the environment, requiring immediate corrective action, including lack of effective and systematic implementation of a requirement Certificate cannot be issued or kept until downgraded by immediate action and a plan, following MSC/Circ.1059-MEPC/Circ.401

Failing to take adequate corrective action, including measures to prevent recurrence, may itself be treated as a major non-conformity.

Internal audits

The company must carry out internal safety audits on board and ashore at intervals not exceeding 12 months. In exceptional circumstances this interval may be exceeded by not more than three months. Auditors should be independent of the area audited where the size and nature of the company allow. The results feed the management review.

Remote audits

A.1188(33) allows remote methods only under strict conditions. In extraordinary circumstances beyond the parties’ control (disaster, war, pandemic, strike), and after a case-by-case assessment by the flag, a remote audit may support postponement or follow-up, but it should lead to no more than an interim certificate or one valid only until a physical audit is possible, and in any case not more than six months. In normal times remote methods may be used for some SMS activities, but initial, intermediate, renewal and additional audits on board should not be fully replaced by remote audit.

ISM at port State control

PSCOs do not audit the SMS. They inspect the ship. Appendix 8 of the Procedures for Port State Control tells them how to link technical or operational deficiencies to the ISM Code:

  • deficiencies that do not show an SMS failure: no ISM deficiency is recorded;
  • at least one non-detainable deficiency that shows an SMS failure: a non-detainable ISM deficiency, with corrective action within three months;
  • deficiencies that together warrant detention, or a detainable deficiency showing a serious SMS failure: a detainable ISM deficiency, and an audit by the Administration or RO before release.

The 2025 revision of the Procedures, resolution A.1206(34), moved the ISM detention item into the main detention guidelines, as flags such as Panama have pointed out.10

What is coming

In June 2025 the Maritime Safety Committee (MSC 110) agreed a comprehensive revision of the IMO guidelines on implementing the ISM Code, for Administrations and companies, over three years to 2028, also addressing the prevention of violence and harassment on board.11 At III 12 in July 2026 a correspondence group was set up to prepare draft amendments for III 13 in summer 2027.9 Check the latest IMO meeting summaries before assuming any change to the Code text itself.

  • A.1188(33) records that the ISM Code became mandatory under SOLAS chapter IX on 1 July 1998 for certain ship types and on 1 July 2002 for other cargo ships and MODUs of 500 gross tonnage and upwards.1
  • ISM Code section 4 requires the company to designate a person or persons ashore “having direct access to the highest level of management”.2
  • ISM Code section 10.3 requires the company to identify equipment and technical systems “the sudden operational failure of which may result in hazardous situations”, and 10.4 to integrate their testing into routine maintenance.2
  • ISM Code section 12.1 requires internal safety audits at intervals not exceeding 12 months, exceeded by not more than 3 months only in exceptional circumstances.2
  • ISM Code section 13 limits the DOC and the SMC to five years, with annual verification of the DOC and at least one intermediate verification of the SMC between the second and third anniversary dates.2
  • ISM Code section 14 limits an Interim DOC to 12 months and an Interim SMC to 6 months, which the Administration may extend in special cases by not more than 6 months.2
  • A.1188(33) paragraph 4.3.6 requires evidence that the SMS has operated for at least three months ashore and on board before initial certification.1
  • A.1188(33) paragraph 4.14.2 states that corrective actions “should not normally exceed three months”, and 4.14.3 that failure to take adequate corrective action may be considered a major non-conformity.1
  • A.1188(33) paragraph 4.8.4.1 states that initial, intermediate, renewal and additional shipboard audits “should not be fully replaced by remote audit”.1
  • Appendix 8 of the Procedures for Port State Control states that PSCOs “do not perform safety management audits” and sets how ISM-related deficiencies are recorded and when an audit is required before release.3
  • Appendix 8 also states that an SMC is not valid unless the company holds a valid DOC for that ship type, and that the copy of the DOC on board need not be authenticated.3

Most flags authorise their ROs to carry out ISM audits and issue DOCs and SMCs, but some keep ISM certification for their own auditors, and the Guidelines expect ROs to send copies of all certificates to the Administration.1 Flags adopt the IMO Guidelines into national rules: Panama adopted A.1188(33) by Resolution No. 107-OMI-292-DGMM of 13 May 2024.5 The United Kingdom replaced its 2014 ISM regulations with the Merchant Shipping (International Safety Management (ISM) Code) Regulations 2026 (SI 2026/194).6 Many flags add their own requirements, for example on DPA qualifications or reporting of major non-conformities, so check the flag’s ISM circulars and the RO’s instructions to auditors.

What Value
DOC and SMC maximum validity 5 years2
DOC annual verification window 3 months before or after each anniversary date1
SMC intermediate verification (if only one) Between the 2nd and 3rd anniversary dates1
Interim DOC Up to 12 months2
Interim SMC Up to 6 months, plus up to 6 months in special cases2
Minimum SMS operation before initial audit 3 months1
Internal audit interval Not more than 12 months (+3 in exceptional cases)2
Normal time limit for corrective action 3 months1
ISM detainable deficiencies, Tokyo MOU 2025 200 (second most frequent)4
  • Critical equipment not tested as the SMS requires: emergency generators, emergency fire pumps, quick-closing valves and fire dampers. Five of the Tokyo MOU’s ten most frequent detainable deficiencies in 2025 were fire-safety items, including fire pumps, remote means of control (such as quick-closing valves) and fire dampers, and one was “maintenance of the ship and equipment (ISM)” (104 cases).4
  • The same deficiency coming back at the next port, which turns a technical item into an ISM deficiency.3
  • Records that exist on paper but do not match the ship: drills signed as done that the crew cannot demonstrate.3
  • DOC and SMC mismatches: ship type not listed on the DOC, or company name, address or certificate numbers not the same on both.3
  • In the Paris MoU region, ISM-related deficiencies were about 4.5% of all deficiencies in 2025.7
Is a PSC ISM deficiency the same as a major non-conformity?

No. A PSCO records an ISM deficiency; only the Administration or RO can raise a major non-conformity in an audit. A detainable ISM deficiency, though, requires that audit before the ship is released.

Can the internal audit be done by the master?

The Code expects auditors to be independent of the areas audited where the size and nature of the company allow. On board this usually means a superintendent or auditor from ashore, or a master from another ship.

How long do we have to close a non-conformity?

As agreed with the auditor, and normally not more than three months. Major non-conformities need immediate action before the certificate can be issued or kept.

Does an ISM audit replace the statutory surveys?

No. ISM verification “neither duplicates nor substitutes” the surveys for other certificates, and it does not relieve anyone of their own responsibilities.

1The PSCO finds a seized fire damper and a broken emergency fire pump, each detainable. She considers that both show a serious failure of the SMS. What happens?
2The last internal audit on board was 14 months ago because the ship was in a war-risk area and no auditor could attend. Is that acceptable?
3An auditor finds that maintenance records for the steering gear were completed in advance for the next two months. How should this be graded?
4When must a single intermediate SMC verification take place?
5A company takes over a ship that it has never operated before. What can be issued while the SMS is bedded in?
6What does the company need to show at the initial shipboard audit?
  1. 1

    IMO Resolution A.1188(33), 2023 Guidelines on implementation of the International Safety Management (ISM) Code by Administrations, adopted 6 December 2023 (revokes A.1118(30)), Annex, sections 1 to 4. https://wwwcdn.imo.org/localresources/en/KnowledgeCentre/IndexofIMOResolutions/AssemblyDocuments/A.1188(33).pdf

  2. 2

    IMO Resolution A.741(18), International Management Code for the Safe Operation of Ships and for Pollution Prevention (ISM Code), as amended up to MSC.353(92), sections 1.1, 4, 9, 10, 12, 13 and 14 (IMO publication; text as reproduced in the UK’s MSIS 2, withdrawn 10 April 2026). https://www.gov.uk/government/publications/the-ism-code-msis-2/msis-2-international-management-code-for-the-safe-operation-of-ships-and-for-pollution-prevention-the-ism-code--2

  3. 3

    IMO Resolution A.1185(33), Procedures for Port State Control, 2023, appendix 8, Guidelines for port State control officers on the ISM Code (superseded by resolution A.1206(34), Procedures for Port State Control, 2025, adopted 3 December 2025). https://wwwcdn.imo.org/localresources/en/OurWork/IIIS/Documents/A%2033-Res.1185%20-%20PROCEDURES%20FOR%20PORT%20STATE%20CONTROL%2C%202023%20(Secretariat)%20(1).pdf

  4. 4

    Tokyo MOU, Annual Report on Port State Control in the Asia-Pacific Region 2025, foreword and figure 8 (most frequent detainable deficiencies). https://www.tokyo-mou.org/wp/wp-content/uploads/ANN25.pdf

  5. 5

    Panama Maritime Authority, Resolution No. 107-OMI-292-DGMM of 13 May 2024 adopting resolution A.1188(33). https://www.panamashipregistry.com/wp-content/uploads/2024/06/Resolucion-107-OMI-292-Esp-Eng.pdf

  6. 6

    UK Department for Transport, The Merchant Shipping (International Safety Management (ISM) Code) Regulations 2026 (SI 2026/194). https://www.gov.uk/government/publications/the-merchant-shipping-international-safety-management-ism-code-regulations-2026

  7. 7

    IIMS, Rising detention rates and recurring areas of concern in Paris MoU Annual Report 2025 (July 2026). https://www.iims.org.uk/rising-detention-rates-and-recurring-areas-of-concern-in-paris-mou-annual-report-2025/

  8. 8

    IMO, The International Safety Management (ISM) Code (adoption and amendments with entry-into-force dates). https://www.imo.org/en/OurWork/HumanElement/Pages/ISMCode.aspx

  9. 9

    ABS, Brief: III 12 (ISM Code implementation guidelines revision, completion targeted for 2028). https://ww2.eagle.org/en/rules-and-resources/regulatory-updates/regulatory-news/iii-12.html

  10. 10

    Panama Maritime Authority, Merchant Marine Circular MMC-379, Procedure for Port State Control, 2025 amendments (resolution A.1206(34)), section 3.5, updated July 2026. https://www.panamashipregistry.com/wp-content/uploads/2024/07/MMC-379-Procedure-for-PSC-2025-30-07-2026.pdf

  11. 11

    IMO, Maritime Safety Committee, 110th session (18 to 27 June 2025), meeting summary. https://www.imo.org/en/MediaCentre/MeetingSummaries/Pages/Temporary-MSC-110-Summary.aspx

Rules checked 20 October 2026. VSL Safety is not an approved training provider and doesn't issue certificates. These lessons don't replace STCW training, or the manufacturer's training and certification that service technicians need.

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