IHM Compliance for Panama Flag Vessels

Complete Inventory of Hazardous Materials maintenance and Hong Kong Convention guidance for the world's largest open registry (~8,000 vessels, ~225M GT). Continuous IHM Part I, II & III updates aligned with HKC, EU SRR and MEPC.405(83) — powered by Varuna Sentinels’ VSIMS platform.

HKC Party ICIHM Required MEPC.405(83) Compliant

Panama Flag — Key IHM Compliance Facts

Panama acceded to the Hong Kong Convention in 2016 and is a foundational party. Below are the regulatory pillars every Panama-flagged ship operator should track in 2026.

Largest ship registry in the world by tonnage and number of registered vessels.

Hong Kong Convention party — ICIHM is mandatory for all Panamanian-flagged ships of 500 GT and above engaged in international voyages from 26 June 2025.

Panama Maritime Authority (AMP) requires ICIHM to be issued by an IMO-recognised organisation (RO).

Continuous IHM maintenance is mandatory throughout the operational life of the vessel.

Panama is not bound by the EU Ship Recycling Regulation but Panamanian-flagged ships calling at EU/EEA ports trigger PSC checks against the EU SRR list.

IHM Part I, II & III — Panama Flag Specifics

Panama-flagged owners must contract an AMP-recognised RO for IHM verification. Material Declarations (MDs) and Suppliers' Declarations of Conformity (SDoC) prepared on or after 26 June 2025 must use the MEPC.405(83) format with the cybutryne threshold of 200 mg/kg.

How Varuna Sentinels supports the Panama fleet

Our cloud-based VSIMS platform delivers continuous IHM Part I maintenance, automated MEPC.405(83)-compliant Material Declarations, IHM Part II & III preparation for end-of-life events, and audit-ready evidence packs for Port State Control inspections. We coordinate with your Recognised Organisation, classification society and recycling yard from the first survey to the final IRfRC.

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Panama Flag IHM — Frequently Asked Questions

Is IHM mandatory for Panama-flagged ships in 2026?

Yes. Following Hong Kong Convention entry into force on 26 June 2025, every Panama-flagged vessel of 500 GT and above engaged in international voyages must carry an International Certificate on Inventory of Hazardous Materials (ICIHM).

Who can certify IHM Part I for a Panamanian-flagged ship?

Only Recognised Organisations (ROs) authorised by the Panama Maritime Authority — typically members of IACS such as Lloyd's Register, DNV, ABS, BV, RINA, ClassNK, KR, CCS — can issue the ICIHM.

What happens if my Panama-flagged ship has no IHM at a Port State Control inspection?

Failure to carry a valid ICIHM is grounds for detention under HKC PSC procedures, with operational delays, charter penalties and reputational consequences. Continuous maintenance via VSIMS prevents these events.

Does Panama's flag accept the new MEPC.405(83) cybutryne threshold?

Yes. Panama applies the IMO MEPC.405(83) amendments — Material Declarations issued on or after 26 June 2025 must reflect the new 200 mg/kg cybutryne threshold for antifouling system samples.

Can a Panama-flagged ship be recycled at any HKC-compliant yard?

It must be recycled at a yard with a valid Document of Authorization of Ship Recycling (DASR). For ships intending to call at EU/EEA ports prior to recycling, the EU Ship Recycling Regulation list must also be considered.

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Get a Tailored Panama Flag IHM Compliance Plan

Book a 30-minute call with our IHM specialists. We will review your fleet’s flag-state obligations, current IHM status, and the fastest path to continuous compliance with HKC, EU SRR and MEPC.405(83).

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