World leading quality in heating solutions
With our roots near the Port of Rotterdam, Masterwatt Marine Solutions is the latest expansion of the Masterwatt family. We proudly supply high-end, custom-made stainless steel calorifiers and buffer tanks from OSO Hotwater, as well as robust air heaters from VEAB.
Crafted from the highest quality materials and built with the latest techniques, our products are designed to perform reliably in the most demanding maritime and offshore environments. Backed by decades of onshore expertise in HVAC installations and strengthened through close cooperation with OSO Hotwater and VEAB, we bring the best heating solutions to sea.
In addition to superior quality, all our products can be fully customized and meet certification requirements from the world’s leading class societies, including Bureau Veritas, Lloyd’s Register, RINA, ABS, and DNV.
Our products
Customization
Every ship has different needs, that’s why Masterwatt Marine Solutions will provide you with a custom-made solution for every product. Whether it is a retrofit or a newly designed calorifier everything can be customized. Different volumes, different size nozzles, extra connections, painted in the desired RAL-colours, electrical power from 5kW up to 250kW, no problem! We are here to meet your needs.
Above all we value quality and reliability of our products. We therefore work with only the best quality products and materials from OSO Hotwater.
The approval of our customized products by the different class societies, such as: Bureau Veritas, Lloyds Register, DNV, ABS and RINA is of great importance to us. That is why all of our products from the Triton Series are already class approved by one of these class societies.
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The manufacturer OSO Hotwater
OSO Hotwater is a Norwegian family-owned company with factories in Norway and Sweden. OSO is known all over the world for their class leading stainless steel hot water cylinders. Besides domestic appliances OSO is supplying the world’s shipping, super yacht, cruise and offshore fleet with hydrophores and calorifiers for decades providing unique experience and know-how. Reference projects include Norwegian oil & gas platforms Troll, Oseberg, Valhall and many others, as well as some of the best-known cruise ships in the world. OSO Hotwater holds ISO 3834-2 welding certification for independent third-party verification. As standard, all pressure vessels are designed according to EN 13445 and additional certificates are available upon request. Whatever requirement you have, we will meet them!
About VEAB Heat Tech
“Creating the perfect indoor climate requires both know-how and capability. We have both.
With more than 50 years of experience, VEAB combines deep industry knowledge with a strong commitment to innovation, offering complete solutions for heating and cooling.
Our long history reflects dedication and progress, building expertise that covers every aspect of climate regulation. We are more than just our products — we deliver custom, efficient, and reliable systems tailored to each customer’s unique needs.
Sustainability is at the core of everything we do. We recognize the environmental impact of our products, which is why we are committed to developing solutions that help our customers reduce their climate footprint. Through energy-efficient technologies, carefully selected materials, and resource-conscious production processes, we ensure responsible and future-ready solutions.
We look forward to being your trusted partner in delivering innovative, sustainable climate solutions.”
