Diesel-electric Propulsion for 4 Semi-sub Ships

CSBC Corporation Taiwan has chosen Siemens to supply diesel-electric propulsion systems and other accessories for four 65,000-ton semi-submersible deck cargo vessels (SSDCVs). The country’s largest shipyard is building the vessels for a customer in Singapore.

 

Compared to conventional mechanical propulsion technologies, Siemens’ diesel-electric system will reduce fuel costs by up to 15 percent, resulting from unique power management features, the manufacturer said. Likewise, associated propellers, rudders and thrusters will improve the vessel’s maneuverability when operating at low speeds. Each propulsion system includes an IDS comprising low-voltage propulsion motors and frequency converters that facilitate economic, energy-saving vessel operation, as the components are perfectly matched to one another. To protect the ocean from unnecessary pollution, ballast pump systems will help control and dispose of pollutants.

 

“Our state-of-the-art diesel-electric propulsion systems are designed to enhance the fuel efficiency and maneuverability of marine vessels, while leveraging an associated pumping technology to protect the surrounding environment,” said Mario Azar, CEO of the Siemens Business Unit Oil & Gas and Marine. “We are pleased to be working closely with CSBC Corporation Taiwan on this important project, and with the overall adoption of our propulsion system in the oil and gas and marine industries we serve.” 

 

Siemens will supply the complete diesel-electric propulsion systems for all four SSDCVs, to be delivered by the end of 2017. Each system, consisting of four 4,000 kilowatt (kW) low-voltage Simotics motors and four low-voltage Sinamics frequency converters as well as their corresponding transformers, creates an IDS. Due to optimum coordination of components, a cost-effective overall system has been developed that is distinguished by reliable operation and high availability. The scope of supply for each vessel also includes 6,980 kW main generators, medium-voltage switchboards, power management systems, converters and transformers for ballast pump as well as distribution transformers, a controllable pitch propeller, flap rudder and a bow and stern tunnel thruster. 

 

SSDCVs are designed for transportation of heavy loads, such as other vessels, jack-up rigs, floating and non-floating modules. They can be submerged, enabling cargo to be floated into place without moving it out of the water. Alternatively, they can be loaded without activating the submerge feature. The need for this type of vessel is expected to grow in the coming years.