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Harbor Docking orders hybrid propulsion tugboat
A US tugboat owner has selected the design for a 28-m tug with hybrid propulsion to support ships docking at a US Gulf port
Harbor Docking & Towing has ordered a newbuild harbour tugboat with hybrid propulsion from a US shipyard to expand its fleet supporting ships docking at ports on the US Gulf coast.
C&C Marine and Repair will build this 28-m tug at its facilities in Belle Chasse, Louisiana, to a design created by Canadian naval architect Robert Allan Ltd.
The tug will be built to a RApport 2800-H design with a beam of 12 m, a depth of 5 m and a navigational draft of around 6 m.
Cummins will manufacture and supply the tug’s power system, which includes a pair of QSK60-M diesel engines, rated at 2,013 kW at 1,800 rpm, two QSM19 diesel generator sets for electric power during towing operations, and a smaller QSM11 generator for use in lower-load operations and in harbours.
These engines will be coupled with two electric motors, rated at 600 kW, and a pair of Kongsberg Maritime-manufactured US255S twin-Input Z-drives with fixed pitch propellers, to achieve a bollard pull of 88 tonnes.
Ockerman Automation will design and integrate the hybrid propulsion system and electrical control system for the vessel.
The hybrid propulsion system will have several modes to reduce emissions from operations while ensuring adequate power is available for all anticipated operations.
In an eco mode for standby and transits, the tug will use only the two electric motors, while in a hybrid mode for full power manoeuvres, both the diesel engines and electric motors will be engaged.
A mechanical mode using only the main diesel engines will be available for long-distance transits and ship dockings, and another eco mode can be used for firefighting using the FFV 1-class system while manoeuvring, using one main engine power-take-out powering the FiFi system.
The Lake Charles, Louisiana-headquartered owner expects the new tug to have ABS class notations for ship escorting and towing, for firefighting and automated machinery spaces.
DMT will provide the escort-class winch with up to 75 kW of power to be installed on the forward deck.
“Due to the high ambient temperatures in the Gulf Coast, larger than typical ventilation systems are fitted, which should minimise engineroom temperatures,” said Robert Allan.
The 28th International Tug & Salvage Convention, Exhibition & Awards will be held in Gothenburg, Sweden, in association with Caterpillar, 19-21 May 2026. Use this link for more details of this industry event and the associated social and networking opportunities.
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