Future-proof retrofitting for inland waterway vessels – HJS exhaust systems enable compliance with the lowest emission standards with minimal effort

May 21, 2025

Future-proof retrofitting for inland waterway vessels – HJS presents low-emission SCRT® technology at Maritime Industry

Menden, May 8, 2025 – HJS Emission Technology GmbH & Co. KG will present its latest developments exhaust aftertreatment for large engines in inland shipping at the upcoming Maritime Industry from May 20-22 in Gorinchem. The main focus will be on the modular SCRT® system (Selective Catalytic Reduction Technology with an integrated particulate filter), which has been specially designed for use on inland waterway vessels and makes a key contribution to meeting Stage V emission limits.

Efficient. Modular. Future-oriented.

The SCRT® and CRT systems from HJS are based on a modular construction principle, allowing flexible adaptation to a wide range of engine manufacturers, power classes, and installation conditions.
Thanks to their modular design and maintenance-friendly sintered metal filter modules, retrofit solutions can be implemented quickly and individually – with minimal installation effort and no modifications to the engine.

A Sustainable Alternative to Repowering

While a complete repowering involves high costs, long downtimes, and ecological uncertainties, HJS offers a cost-effective and sustainable bridging technology with its VERT-certified SCRT® technology.
Operators not only benefit from compliance with the Stage V limits in accordance with the NRMM Directive, but also from the opportunity to earn Green Award points and improve their certification levels.

Visit us at the Maritime Industry – Booth F56

At the HJS exhibition stand, trade visitors will gain an exclusive insight into the latest technologies for retrofitting large engines.
In direct discussions, custom retrofit solutions for inland waterway vessels worldwide can be explored.
The flexible HJS systems provide a genuine perspective for low-emission shipping – without compromising on efficiency or cost-effectiveness.


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