Built by Sealink Marine Shipyards in Malaysia and launched in June 2017, the harbour tug Harmoni Satu features both an anchor hawser winch in the bow and a towing winch on the aft
Both MacGregor winches have a 150-tonne braking capacity. The ability to tow as well as push allows the crew to handle any type of vessel in the harbour.
Bow fendering includes D-fendering all round with a W push bow and pilot boarding platform. The operation bridge has a 360° view along with extensive electronic navigation and communications equipment, so the captain can monitor activity in every direction.
The Sealink team worked closely with Cummins marine experts to ensure that all anticipated power needs would be met, and that quality control would be assured in every phase from design and installation through initial launch and commissioning.
Twin Cummins QSK60 diesels generate 2,300 hp at 1,900 rpm. They turn 2.4-m controllable pitch propellers, giving Harmoni Satu a 57.56-tonne bollard pull ahead and a 53.87-tonne bollard pull astern with a free-running speed of 13.6 knots. External fi-fi capability is provided by two 141 m3/h monitors supplied by a front-mounted fire pump driven by a power takeoff from one of the main QSK60 engines, and outfitted with a fully compliant dispersant system.
Compared with medium speed engines, the high-speed Cummins QSK60 diesel engines have better response during manoeuvring. The Cummins QSK60, with its integrated systems, also allows for more free space in the engineroom.
Auxiliary power is also supplied by Cummins with a pair of 110-kW QSB7-DM-powered generators providing electricity for everything from lighting and navigational equipment to air conditioning. Having a single source for all power units simplifies maintenance and service with one number to call for any type of expert assistance.
Visit cummins.com for more information on Cummins power solutions for the marine market including our IMO Tier III offerings. Additional details about these tugs including ship schematics can be found in the case study, Versatile Harbour Tug with Cummins QSK60.