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ISPS Code Explained for Ships and Port Facilities

The International Ship and Port Facility Security Code forms the basis of the mandatory international security regime for ships and port facilities under SOLAS chapter XI-2. Its purpose is preventive: assess threats, establish roles and implement security measures before an incident occurs.

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IMT PRACTICAL GUIDEUPDATED SEPTEMBER 2026PRIMARY KEYWORD: ISPS CODE EXPLAINED
IMT
International Maritime Training Research Team

Maritime knowledge article · Reviewed against official and primary industry sources where applicable

Last updated September 2026

Overview

The International Ship and Port Facility Security Code forms the basis of the mandatory international security regime for ships and port facilities under SOLAS chapter XI-2. Its purpose is preventive: assess threats, establish roles and implement security measures before an incident occurs.

For maritime professionals, the useful question is not only “what does the term mean?” but “what evidence would show that the work was performed properly?” This guide therefore focuses on the practical link between the governing framework, onboard or cargo-side activity, and the records a competent professional would expect to see.

Key Points to Understand

01The ISPS Code entered into force on 1 July 2004.
02Part A contains mandatory requirements; Part B provides recommendatory guidance on meeting those obligations.
03Implementation connects governments, port authorities, shipping companies, ships and port facilities.
04Security plans should be based on assessment and should work in actual operations, not just satisfy document review.

Practical Process

The exact method must always be adapted to the vessel, cargo, company procedures, local rules and the scope of the assignment. A disciplined sequence helps keep evidence complete and prevents the work from drifting away from its objective.

  1. Understand applicable ship/port responsibilities.
  2. Complete or review the security assessment.
  3. Translate identified vulnerabilities into plan measures.
  4. Define access control, restricted areas, monitoring and communications.
  5. Train personnel and conduct required drills/exercises.
  6. Maintain records and review the plan when conditions change.
Evidence principle: write down what was actually checked, how it was checked, and any limitation that could affect the conclusion. A clear limitation is stronger than an unsupported assumption.

Common Mistakes

Most weak inspections, surveys and audits do not fail because the professional forgot a complicated formula. They fail because scope, evidence or follow-up became unclear. Watch especially for:

  • Treating security as the SSO's job alone.
  • Using generic plan text not connected to the ship's layout and operations.
  • Focusing on equipment while ignoring people, access and communication.

Practical Checklist

This is an IMT working checklist, not a substitute for the applicable convention, code, flag requirement, port rule, company procedure or contractual instruction.

  • Assessment
  • Plan
  • Roles
  • Access control
  • Restricted areas
  • Monitoring
  • Drills
  • Records
  • Review

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Frequently Asked Questions

Is Part B of the ISPS Code mandatory?

IMO describes Part A as mandatory and Part B as recommendatory guidance, although administrations may give specific effect to parts of the guidance.

When did the ISPS Code enter into force?

1 July 2004 under SOLAS chapter XI-2.

What is the main idea of the Code?

A structured international framework for assessing security threats and implementing preventive security measures.

Authoritative Sources

Regulatory statements in this guide are grounded in the following primary or official sources. Operational recommendations are presented as IMT practical guidance.

International Maritime Training (IMT) is an independent training provider. This educational guide is not issued by, affiliated with, or endorsed by IMO, ILO, MPA Singapore, or any other authority referenced above.