Inventory of Hazardous Materials (IHM – Part I)

What is IHM Part I?

Inventory of Hazardous Materials (IHM) Part I is a mandatory requirement under the IMO Hong Kong Convention and EU Ship Recycling Regulation for ships engaged in international trade.
It identifies and documents hazardous materials contained in the ship’s structure, equipment, and systems to ensure safe operation, maintenance, and future ship recycling.

Our IHM Part I Service

ZASA Marine Solutions provides end-to-end IHM Part I services for both existing ships and newbuild vessels.
Our scope includes documentation review, onboard visual inspection and sampling, laboratory analysis where required, and preparation of an IMO-compliant IHM report with full support through Classification Society submission and approval.

ZASA Marine Solutions is a BV-certified IHM service provider.

BV-Certified IHM Service Provider Click to view certificate

ZASA Marine Solutions is certified by Bureau Veritas to perform Inventory of Hazardous Materials (IHM) Part I services in accordance with applicable IMO requirements.

Applicable For

Existing ships
Newbuild vessels
Shipowners and operators
Vessels requiring Class or Flag endorsement
Owners preparing for ship recycling compliance

Our IHM Process

Step 1
Documentation review & Visual Sampling Check Plan (VSCP)

Step 2
Onboard visual inspection and sampling

Step 3
Laboratory analysis (where applicable)

Step 4
Final IHM Part I report and submission to Classification Society

Typical Timeline

Documentation review: 1 day
Onboard inspection: 3–4 days
Laboratory analysis: 14–20 days
Final report: 3 days after receipt of lab results

Timeline may vary depending on vessel size and sampling scope.

Frequently Asked Questions

What is Hong Kong Convention?
The Hong Kong International Convention for the Safe and Environmentally Sound Recycling of Ships (HKC) entered into force on June 26,2025. It mandates that ships, particularly those over 500 GT, must be recycled at authorized facilities, manitain an Inventory of Hazardous Materials (IHM), and follow safe, environmentally sound practices to manage hazardous substances.

Is IHM Part I mandatory?

Yes. IHM part I is mandatory prior issuance of IHM certificate. This document is prepare by HazMat expert. Inventory of Hazardous Materials (IHM): Ships must carry an IHM identifying materials like asbestos, heavy metals, and hydrocarbons, to be updated throughout their life.

Do you handle Class submission?

IHM part I documents has to be submitted by shipowner/manager to Classification Society for issuance of IHM certificate.

Can IHM be done during operation?

Yes. Sampling process can be done during vessel in operation and during vessel in dry condition.

How long is IHM certification process?

Normally it will take around 1 month starting from

preparation / review documents > onboard sampling process > lab > report > Initial survey by RO + issuance of IHM certificate.