IHM Software

IHM software, built for superyachts

Most IHM tools were made for commercial fleets and retrofitted for yachts. MANTIS was built for the superyacht reality from day one — class-agnostic, self-service, and tuned to how small crews actually work.

If you are choosing how to manage your Inventory of Hazardous Materials, you have four real options. Here is an honest look at each — and where MANTIS fits.

Class-society tools

Tools such as DNV's IHM Manager are self-service and capable — but typically tied to vessels classed with that society. Most superyachts are flagged and classed across a mix of registries, so a single-society tool rarely fits the whole picture.

Managed services

Specialist hazmat consultancies will maintain your IHM for you. The work is thorough, but pricing is enterprise and opaque, and the records live with the provider rather than with your crew — exactly the people who know when a material changed.

Spreadsheets & paper

Still the most common approach. It is free until a survey or a Port State Control inspection arrives, at which point a missing change record or an out-of-date SDS becomes an expensive problem. No tracking, no reminders, no audit trail.

MANTIS

Self-service software built for yachts: your crew keep Part I/II/III current, certificates and survey dates are tracked for you, MD/SDoC sit with the change they support, and the survey pack assembles in one click. Class-agnostic, EU-hosted, transparent pricing.

At a glance

Capability MANTIS Class-society tool Managed service Spreadsheet
Built for superyachts ✓ — — n/a
Works regardless of class society / flag ✓ Tied to one class society Varies ✓
Self-service — your crew keep it current ✓ ✓ Experts do it for you ✓
Part I / II / III in one workspace ✓ Varies ✓ Spreadsheets
Certificate + survey-interval tracking ✓ Varies ✓ Manual
One-click survey pack PDF ✓ Varies Deliverable —
Transparent pricing ✓ Sometimes Quote only n/a

Comparison reflects how these options are typically delivered as of 2026. Capabilities vary by provider and plan — confirm specifics with each vendor.

Why class-agnostic matters for yachts

A commercial fleet is often classed and flagged consistently across many sister ships, so a single-society tool covers it. A superyacht is its own world — it might be Cayman-flagged and classed with Lloyd's Register, or Marshall Islands with ABS, or Malta with RINA. IHM obligations under the Hong Kong Convention and the EU Ship Recycling Regulation apply the same way regardless. Your tooling should too. MANTIS prepares your inventory; your class society verifies it — whoever that is.

Built around how Part I actually changes

The IHM is a living document. It moves at refits, refrigerant services, and stores changes — events driven by your crew and your suppliers, not by a head-office compliance team. MANTIS puts the record where the knowledge is, and keeps the MD/SDoC documentation chain attached to the change it supports, so the renewal survey is a matter of pressing a button rather than reconstructing a year of email.

What it is not

MANTIS does not certify your IHM and does not assume responsibility for your compliance — that sits with your certified, competent crew and your class society. It is a workspace that keeps the records current and the survey pack ready. That distinction is deliberate.

Try it on your own vessel

MANTIS is free during our beta — every feature, every vessel, no credit card. Import your existing IHM from Excel and see how a survey pack assembles from records kept current.

Start free → See pricing