Skip to content
HAV editor27.1.20233 min read

Cemre chooses NES for twin hull SOVs

Cemre Shipyard has awarded HAV Group ASA’s subsidiary Norwegian Electric Systems AS (NES) a contract to deliver energy design, and smart control systems for two “Windkeeper” service operations vessels (SOV) that the Turkish shipyard is building for GC Rieber Shipping.

NES’ scope of work is to manage the complete energy design plus act as system integrator for the vessels’ power system and smart control set-up. NES will supply frequency converters and electric motors for the propulsion system, battery system, transformers, main DC and AC switchboards, integrated automation system, integrated navigation system and dynamic positioning system.

This is a substantial contract for NES and HAV Group.

“The primary purpose of tailoring the vessels’ energy design and smart control system is to meet the vessels’ strict requirements for redundancy, and in an extension of this optimised energy efficiency. In turn this translates directly to lower operating costs and emissions to air,” says sales manager at NES, Egil Bremnes.

The unique vessel design requires a power system topology that has a high number of redundancy zones. NES, together with the GC Rieber team, have developed a game changing energy design that can be operated with a minimum of engines running. The degree of safety in combination with minimum fuel consumption is achieved by using NES portfolio of products, such as ESS, Quadro Master, Odin`s eye and smart control.

“These are highly innovative vessels, and we are delighted that Cemre Shipyard and GC Rieber Shipping have trusted NES with the task of making them as energy efficient as possible. It has been a privilege to work with both GC Rieber and Cemre on this delivery. Two highly competent companies with equal competent project teams,” Bremnes adds.

The Windkeeper SOVs are based on small waterplane area twin hull (SWATH) methodology and design, which offers the offshore wind market improved operability, ultra-low fuel consumption, and the option of fully electric operations in the field.

NES will design, assemble, and test the systems at its headquarters at Godvik outside Bergen, Norway. The company’s facilities in Egersund and Ålesund, Norway will also support the project. Delivery of the equipment is planned for beginning of 2024.

The recently established NES office in Istanbul, Turkey, will contribute with local yard support and commissioning.

NES is a subsidiary of HAV Group ASA, which is listed on Euronext Growth Oslo.
GC Rieber Shipping is a shipowner and project house with a focus on developing profitable and sustainable maritime projects.


For further information, please contact:
Gunnar Larsen, CEO
+47 901 05 694

About HAV Group

The HAV Group is an international provider of technology and services for maritime and marine industries, listed on Euronext Growth under the ticker code HAV. The group comprises four subsidiaries with several decades of combined experience in the industry, in addition to special expertise in guiding the marine and maritime industries through the green shift and towards the goal of zero emissions.

About Norwegian Electric Systems AS

Norwegian Electric Systems is a world leading total supplier of low and zero emission propulsion and control systems for a wide range of vessels for the global marine market:

• Energy Design - knowledge about vessel operations and competence of integrating the latest available energy sources gives us the opportunity to design optimal propulsion systems. Norwegian Electric Systems designs efficient and environmentally friendly solutions, creating added value for the customers.

• Smart Control - new requirements and demand for more efficient and safe operations, calls for smarter vessels. Flexible software platforms and new solutions for navigation, automation, and control – ensures safety by smart and easy operation.

We are a committed partner for safe shipping, lower emissions and added value for our customers, and our focus is to be a collaborator and a system supplier, designing optimal propulsion systems for vessels and control systems to ensure safety by smart and easy operation.

NES is based in Bergen and has branches with core expertise in Ålesund, Egersund and Istanbul.
To learn more about NES, visit: