Hybrid drive solutions

ALL IMAGES COURTESY OF SCHOTTEL.

As a mechanical hybrid solution without the costly complexity of common hybrid technology, SYDRIVE-M will ensure lower maintenance costs and less fuel consumption. This will enable PSA Marine Peru to ofer emission-reduced towing services in Peruvian ports. The RAmparts 2400W design vessel is scheduled to enter service in 2023.

William Revilla, Senior Fleet Manager at PSA Marine Peru says, “In PSA Marine Peru, we are constantly on a lookout for sustainability-focused innovations. With reduced emissions, the forward-looking solution from Schottel allows us to operate our vessel more efciently and sustainably. This also demonstrates our commitment to deliver only the best to our customers and stakeholders.”

The main propulsion of the ASD tug consists of two diesel-driven RudderPropellers type SRP 460 (2,240kW each) featuring fxed-pitch propellers with a diameter of 2.6m. With this thruster confguration, the 24.4m long and 11.25m wide tug will achieve about 70t of bollard pull. Beyond this, the rudder propellers feature the certifed sealing system Schottel LeaCon which ofers safe and reliable protection against

Operation profles of tugs and workboats feature low engine loads for up to 90 percent of operation time. In such instances, an engine that is rated for maximum propulsive power works in an unfavourable partial-load range that is inefcient in terms of emissions and fuel consumption. Hybrid drive systems are predestined for applications with highly variable power ranges. These generally consist of two separate power sources (diesel and/or electric motors) per propeller with diferent power ratings. Schottel has further extended the system to a broader understanding of hybridization with SYDRIVE-M.

contamination of the seawater by operating materials.

SYDRIVE-M connects a port and starboard mounted azimuth thruster in one vessel, allowing the thrusters to be driven together by only one of the main engines. In turn, this leads to reduced operating hours of the main engines, resulting in lower maintenance costs as well as less fuel consumption and lower emissions. The system needs no additional electronical components, which ofers many advantages as demonstrated by three main operation modes: Light Operation or Free Sailing Mode, Full Thrust Operation Mode and FiFi-Mode.

Cheoy Lee Shipyards (CLS) and Schottel are linked by a long-standing and reliable partnership. Around 100 vessels equipped with propulsion systems from the German company have been built at CLS in the past ten years. Its main production facility is located in southern China. The 12-hectare Hin Lee (Zhuhai) Shipyard plant includes a 1,000t railway lift, 150t Travelift, dedicated fabrication halls for steel, aluminium and fbreglass moulding, trade specifc workshops and onsite dormitories to house up to 1,000 employees.