HMSA is producer and supplier of the smallest design Biological Sewage Treatment units, Grey Water Treatment Systems, Grease Separators, Grey Water tanks, Odour filters, Fresh Water Skids and supplier of STP integrated Jets Vacuum Toilet systems, Reverse Osmosis Fresh Water generators, UV reactors, Oily Water Separators, Hydrophore units, Calorifiers and Chlorine dosing systems.

All their products are manufactured and / or assembled in the workshop in Amsterdam under their supervision. This gives them the advantage of a 100% control on quality, dimensions and guarantee of their products, conform their MCA/MED quality control system, as approved and certified by Lloyd’s.

Lloyd’s Register Type Approval on the biological sewage treatment plant design parameters, IMO certificate, MCA/MED Module B + F certificate, USCG admitted for vessels visiting USA, Type Approval certificates are accepted by all major Classification Societies, RMRS Type Test Certificate optional available.

Holland Marine Services Amsterdam supplies its products worldwide to shipyards, offshore contractors, yacht builders, trading houses and ship / rig owners, for installation on board of commercial vessels, drilling rigs, accommodation platforms / living quarters, FPSO, navy vessels, dredgers, ferries, supply vessels, tug boats, but also for luxury super yachts, new buildings as well as retro-fit.

Their reference list shows a variety of customers, all these customers have a few things in common; they are satisfied with its products, high quality standard and after sales. Targets of all their designs are reliability, high quality level, low operational costs, low maintenance, plug and play installation and use of green technologies.

HMSA is your one stop shop for production of high quality and safe fresh water at each tap and recycle the produced waste-water into clean and safe water for discharge back to sea again. Installation of complete HMSA Fresh Water systems stops the need of fresh water from plastic bottles, reduces the operational costs of a ship and makes a contribution in the fight for cleaner seas.


Information on Mistral Suisse

Do you want work with us?

Mistral Suisse, which operates in Italy, Switzerland and Monaco as a representative for international companies. Sent your CV!

New Partners

Corrosion Water Control Maritime Bv

Steel going strong!

Dellner Brakes AB

What is Heat System Design?