In early October 2010, Cheoy Lee delivered the first two Azimuth Stern Drive tugs in a three vessel order. The 30.5m vessels were constructed for a prevalent Omani tug boat operator, for which Cheoy Lee has built vessels before. The tugs, registered in Sultan Qaboos, and under the operators own crew, steamed from Hong Kong to Singapore under their own power where they entered into service.
The all steel tugs are designed by Wartsila Ship Design Singapore, and based on an existing design by Conan Wu and Associates that Cheoy Lee had built previously. Design and construction is to ABS class, with the notation +A1 (E) +AMS, for Unrestricted Towing Service, UWILD.
Ameerat Al Behar is designed for a maximum crew of ten. Accommodation for the crew is on the main and lower decks. In the hull, forward, there are two simple four man cabins. The main deck includes the captains and chief engineer’s cabin, as well as the galley, mess and toilet facilities for the lower deck occupants. The wheelhouse above has good all round visibility through full height windows. There is a single forward facing helm seat mounted on slide rails between two long control consoles, containing machinery controls and navigational electronics. Electronics equipment includes a Furuno radar, Doppler speed log, Inmarsat-C for GDMS Area 2. Outside the wheelhouse, on the bridge deck, there is a single 360m3/hr fire monitor mounted forward on the port side.
The three sisterships are all powered by a pair of air start Niigata 6L26HLX diesel engines, each developing 1800bhp at 750 rpm, fed from a fuel capacity of 120m3 (32,000 gallons). The engines drive Niigata ZP-21 azimuthing thrusters turning fixed pitch propellers within nozzles. The rear mounted thrusters are driven by a cardan shaft arrangement and independently provide full thrust in any direction. Three Perkins generators provide electrical power. Two primary units each rated at 112kW, and one harbour unit developing 40kW.
The towing winch/anchor windlass on the bow and also the rope reel winch on the aft working deck are from MacGregor Plimsol in Singapore.
Principal Dimensions: 30.50m LOA x 9.80m Beam x 4.00m Draft.