Six Caterpillar engine and generator sets supplied for next-generation offshore tug under construction at Gondan Shipyard
Zeppelin Power Norway is supplying a state-of-the-art energy solution for Østensjø Rederi’s new offshore tug, currently under construction at Gondan Shipyard. The delivery of six Caterpillar engine and generator sets, supports Østensjø Rederi’s commitment to innovation, efficiency, and high-performance vessel design.
The tug will operate with high efficiency thanks to the two Cat 3512E generator sets running at variable speed to optimize fuel consumption, reduce noise, and minimize emissions. When maximum pulling power is required, the two 3516E engines connect directly to the shafts, delivering immense power within a very compact footprint.
The newly developed Cat 3516E engines, equipped with six sequential turbochargers, provide instant response across the entire speed range and are designed specifically for the tugboat segment. The generator sets feature double insulation for maximum noise and vibration reduction, meeting Østensjø’s ambition for the quietest possible crew facilities. All engines are fitted with SCR for exhaust cleaning and are prepared for biofuel and future conversion to methanol.
Delivery is scheduled for the first quarter of 2028. This will be Østensjø’s largest and most powerful tug ever, further strengthening the company’s offshore towage capacity.
“We are very pleased with the trust Østensjø has shown by allowing Zeppelin to contribute to a project that sets new standards for efficiency, sustainability, and performance. This vessel will become a reference point in the industry,” says Bernt Eidsvik, Sales Manager at Zeppelin Power.
The scope of supply includes a total of six Caterpillar engine and generator sets, ensuring optimal power, redundancy, and operational flexibility:
- Two Cat® 3516E main engines, each delivering 3,000 bkW
- Two Cat® 3512E variable-speed generator sets, each delivering 1,901 bkW
- One Cat® C9.3 harbour generator
- One Cat® C4.4E emergency generator
