A five-meter moulded depth on a 34.5-foot (10.5-meter) beam allows for a spacious engine room to accommodate the tug’s twin Cummins KTA50-M2 main engines. The V-16 cylinder engines produce 1600 HP each at 1800 RPM and turn into Reintjes WAF664L gears. That power will give the tug a 12-knot speed and a 40-ton bollard pull.
The BV-classed vessel, Tiong Woon Ocean 18, will have accommodation for nine crewmembers. It is fitted with a pair of Cummins QSM11-powered 240 kW generators. The tug is also fitted with an HRP bow thruster. Electronics include JRC radios and electronics. On deck a Marine Equipment double drum waterfall winch is fitted with a spooling gear.
Forward controls in the wheelhouse include a backup remote engine controls provide emergency back-up similar to that offered by a traditional telegraph. Forward and aft control consoles give good visibility in both directions and well-designed controls. The aft console features a walk through allowing excellent views down to the main deck winch.