The Dobrinya, a lead vessel of a package of two icebreaking docking tugs of Project TG04M built at ZNT Yard for Rosmorport, has been commissioned into service on Nov. 15, 2012, Rosmorport said.
The tugs were ordered for the enterprise’s Azov branch. The Dobrynya was laid down on December 8, 2011, launched on August 1, 2012, delivered on September 12, 2012. The second serial tug Muromets was laid down on December 8, 2011 and launched on August 28, 2012. A commissioning ceremony for the Muromets is scheduled for November 30, 2013.
The Project TG04M single-deck twin-screw tugboats are designed to RRR class - "O" 2,0 (Ice 30) for operations in harsh conditions of the Arctic, on inland waterways and estuaries, for river, harbor towing / escorting, docking operations or inshore transportation of 12 passengers (dock workers). The designer provides for cold lay-up of the vessel for the six-month period.
Ship’s characteristics: length - 20.96 m, beam - 6,6 m, depth amidships - 2.4 m, draft at DWL - 1.8 m, displacement at DWL draft, fresh water - 126.6 tons, DWT - about 27.8 tons. The tug is powered by two 221kW (600hp) main engines. Endurance (fuel/water) - 4.4 / 9.4 days. Bollard pull – 71 kH.
JSC Nizhny Novgorod Motor Vessel Yard (ZNT Yard), based in Russia's Nizhny Novgorod region, specializes in the construction of supply and auxiliary fleet, harbor equipment and marine engines.