The first hybrid marine tug powered by liquefied gas has been in service at the Port of Singapore since mid-May.

This new tug was designed and built by Seatrium, a leading provider of engineering solutions for the global maritime industry, and is distinguished by its ability to tow a load of up to 65 tons.

GMS Sunshine is the first hybrid marine tug powered by liquefied gas in the world. It was equipped with MTU gas engines provided by the British company Rolls-Royce.

The operating system operates on the Otto cycle and is based on a fixed propeller azimuth drive, supported by the locomotive's on-board energy storage unit in a hybrid propulsion system.

The azimuth drive consists of marine propellers placed in capsules that can be rotated to any horizontal angle. This gives the locomotive better maneuverability than a fixed propeller and rudder system, and the availability of spare parts and service support is excellent for the operation of the locomotives.

The battery has a capacity of 904 kilowatt-hours and is used to absorb extreme loads, such as acceleration and maneuvering in port.

The hybrid system is distinguished by its ability to achieve maximum traction. It generates about 4 thousand kilowatts of electricity from the azimuth motor and gas engines, and this power is directed to the rear shaft of the locomotive. Which gives it a pulling force of 65 tons.