About Blokland

Blokland Non Ferro Inc. is a business that has been supplying its mostly home made products to the pleasure cruising sector, the commercial shipping industry, and the industry in general for over fifty years.

In 1962, the founder of our company, Mr. J. Blokland, started his own production line in a small foundry, specializing in coolers, heat exchangers and rebuilding parts for marine engines. Because of his enthusiasm, dedication and technical know-how, our company has become a modern machine factory equipped with high-grade machinery. 

By now, the second generation has taken over the company. The company is a medium-sized business employing about thirtyfive competent workers.
We hope we can be of service to you, either the first time or again, with our broad range of products or technical advice on the application of our products.

But please feel free to contact us for specific orders, turning, maintenance, or repair and cleaning of coolers also.

Our company has earned an excellent reputation about which we are very careful!


In 1962 Blokland Non Ferro was founded by Mr. J. (Jan) Blokland. He started up in a small non-ferrous foundry. He started to develop and manufacture marinisation parts for diesel engines. Also the development of shell & tube heat exchangers was realised a few years later. Apart from that a line of stern gear systems and rudder assemblies for steel yachts becomes an important part of the business. At the end of the seventies the design and production of the boxcoolers was started. During the years Blokland Non Ferro has been developed into a worldwide operating company. Today the company is still family owned and Mrs. Corine Veenstra-Blokland is the managing director.


In the course of time, engineering is playing an increasingly important role in our company. Once started engineering in a 2D environment (AutoCAD), we are now fully working in a 3D design environment. Using 3D CAD computer software (Solid Edge), our engineers are continuously working on optimizing and expanding our product range. In addition, this gives us the opportunity to quickly respond to developments and questions which reach us out of the market. Developing and delivering customized solutions is increasingly common. Our skilled engineers are determined to find a solution to any challenge which may occur. To efficiently generate programs for our CNC machinery out of 3D models, we use EZCAM and FASTCAM computer software.


Founded in 1994 and based in The Netherlands, Amartech always has been a specialist in 3D designing and manufacturing of complete propulsion and rudder systems including propellers. All to the highest international standards using the best materials and latest technology’s. The company always had a strong R&D focus and committed itself to bring leading innovations to the market.
It’s familiarity with the tiniest details of propulsion techniques makes a valuable business partner that is hired by many well-known naval architects, shipyards (and owners) worldwide.
Blokland has acquired the name, stock and technical data of Amartech in January 2014.
Amartech is now an integral part of Blokland.
An important part of the former Amartech’s technical staff is still employed at Blokland.
Our well experienced and skilled labour force has produced, delivered and mounted an extensive number of systems worldwide. For Mega Yachts, Super Yachts, Small Yachts up to Performing and Demanding Workboats.
All materials used in the manufacturing of our technical marine equipment are fully certifiable, with certificates of conformity and chemical analysis available on request.
The production of high tech equipment follows the design parameters recommended by the classification Societies when establishing material thicknesses and cross-sections used for all primary propulsion and rudder components.
Blokland propulsion products.

From left to right; Daan Balk, Bram Fase, Martijn Jouwsma en Hendrik van 't Hul