Operation profiles 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 inefficient 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 different power ratings. SCHOTTEL has further extended the system to a broader understanding of hybridization with SYDRIVE-M.

SYDRIVE-E

Thanks to the combined or sequential use of combustion engine and electric motor, SYDRIVE-E with its extensive and intelligent operating modes, enables efficient energy and thrust generation in many different operating conditions. A unique feature is the flexible configuration of power input positions, which allows the drive train to be designed in various manners. This provides greater freedom when designing a vessel and ensures that the individually available installation space can be used optimally. Three power input positions for a ±90° or ±135° installation angle form a Y-shaped arrangement. The individual power inputs are not subject to any power limitation which means that any arrangement of primary and secondary input with variable load distribution can be realized.

SYDRIVE-M
SCHOTTEL SYDRIVE-M is a variable and purely mechanical hybrid propulsion system with no need for any costly additional electronic components. The concept is based on the recent SCHOTTEL Y-Hybrid thruster technology and connects a port and starboard mounted azimuth thruster in a vessel with each other. They can be driven together by only one of the main engines.

OPERATION MODES

Based on the unique SCHOTTEL SRP-Y Hybrid upper gear module for azimuth thrusters, SCHOTTEL SYDRIVE-M is a variable and purely mechanical hybrid propulsion system with no need for any additional electronical components or an additional gear box. This system comes with many advantages as noted in the three following main operation modes:

– Light operation, or free sailing mode / one engine powering two main thrusters
– Full thrust operation mode / full propulsion, with one engine per thruster
– Fire Fighting mode / one propulsion engine driving the Fire Fighting pump

TECHNAVA has been the official representative of German, propulsion experts SCHOTTEL for nearly 50 years. During this time, we have equipped many Greek-owned vessels with high end and extremely durable Rudder Propellers, Bow Thrusters and Navigators for the most demanding operations.

Today SCHOTTEL provides a complete, marine propulsion portfolio including Rudder Propellers, Thrusters, Pump Jets and Controllable Pitch Propellers, with excellent performance, reliability and respect for the environment. Our TECHNAVA team is ready to assist you with all your propulsion enquiries for New Buildings and Retrofits.