Mark Witjens

Hertel (UK) Ltd. operates as an industrial services company. Its services include access solutions, insulation, corrosion protection, mechanical, electrical and instrumental, civil and asbestos and industrial cleaning. The company was founded by Alexander Hertel in 1895 and is headquartered in Middlehaven, the United Kingdom.

Damen Shiprepair Rotterdam BV provides ship repair and conversion services. It specializes in repair and maintenance, conversion, harbor and voyage services to offshore, yachting, and dredging sectors. Its facilities include dry docks and covered facilities. The company is headquartered in Schiedam, the Netherlands.

EST-Floattech BV is a Dutch energy technology company that specializes in maritime energy storage solutions. The company is based in Badhoevedorp, Netherlands and was founded in 2009 by Diederick Stam. The company offers DNV certified lithium battery systems for both maritime and land applications, with a track record of over 200 projects worldwide. The company provides support through service engineers who are available to help via phone, video, or onsite. EST-Floattech is contributing to the electrification of public transport, particularly ferries, to reduce emissions. Mark Witjens has been the CEO of the company since 2022.