Wärtsilä HY tug is designed for the following duties:
To assist in the berthing and un-berthing operation of vessels calling at ports/ terminals
To perform towing, ship handling operation in Ports/ terminals
LESS INSTALLED POWER - This configuration will be able to keep the max bullard pull (BP) with less installed power in a certain time period based on design requirement. Using less engine power also decrease the amount of maintenance needed.The battery can be charged from the PTOs, genset or from shore connection.
LOW FUEL CONSUMPTION > EMISSIONS - Significant reduced fuel consumption is achieved by operating the engines and propellers as close as possible to its optimal curve. Supported by the battery system to handle variations and low load modes.
LOW LOAD OPERATIONS ON BATTERY - Transit ECO and Loitering modes can be operated purely on battery only.
OPTIMUM ENGINE LOADING - It is possible to run engines at optimum load at all modes, and with the battery handling peaks, the engines will have a better operation that also will reduce the maintenance. For the Diesel mechanical - CPP Hybrid configuration, the electrical motor will also act as generator/ PTO (Power Take Off) with the combination including controllable pitch propellers.The converters gives the opportunity to run the main engines on variable rpm to follow the propeller curve.