Nordic (tug)
Drawing of the Nordic
The Nordic is an ocean-going salvage tug stationed at the German Notschleppkonzepts on a maritime location north of the East Frisian island of Norderney. The ship is considered the most powerful salvage tug in German waters.
- 2.1 machinery and drive
History
Construction and commissioning
The construction and commissioning of the Nordic is one of the consequences of Pallas - accident in 1998. Particular, the protective association of the German North Sea ( SDN) had used in addition to many other conservation organizations since then for a new rescue tug.
The keel of the hull number 563 was made on 27 October 2009 at P S Shipyards GmbH (formerly: Peene-Werft ) in Wolgast. The sea trials were conducted between the 7th and the 12th October 2010. In this context, the Nordic reached a tensile force of 207 tons (about 2030 kN) at the Pfahlzugtests in Norwegian Flekkefjord. On 15 November 2010 the ship was completed. After the Nordic was baptized on 8 December 2010 by Susanne Ramsauer, wife of German Transport Minister Peter Ramsauer in Hamburg, she undid the year 2010/2011 from the tug Oceanic, which was made after 42 years of service, out of service. The construction cost of the Nordic been unofficially stated with almost 50 million euros.
Use
Owner of the Nordic is the NORTUG Bereederungs GmbH & Co. KG, in which the members of the consortium coastal protection are involved. The operation of the ship takes over the ship-handling, shipping and salvage mbH & Co. KG. To protect the German coasts, these chartered the tug for initial term of ten years for about 114 million euros to the Federal Ministry of Transport, Building and Urban Development ( BMVBS). Base port of Cuxhaven is Nordic. With a top speed of 19.9 knots she can reach the damaged vessel in the German Bight within two hours.
In order to operate in potentially hazardous environment of the damaged vessel, the Nordic was equipped with gas and explosion.
Technology
Machinery and drive
The machinery of the Nordic consists of the two main engines of the MTU 20V8000M71L GSB (gas protection mode), two auxiliary engines (MTU 12V4000 ) for driving the two main generators and other diesel engine of MAN, which drives the emergency generator. The main engines are 20 cylinder V-engines, which are equipped with common- rail fuel injection and four water-cooled turbochargers. They have a displacement of just under 350 liters and includes a volumetric efficiency of about 24.5 kW / liter at a boost pressure of 4.1 bar the most efficient marine diesel engines.
The Nordic is prepared for operation in explosive or hazardous atmosphere (eg after a tanker accident ). In such a case, the entire structure as well as the engine room can be sealed gastight. A sea water cooling of the exhaust system, reduces the exhaust gas temperature to below 135 ° C, thereby reducing the engine power to about 4,000 kW. Prevent flame arresters, that the outside air is ignited by the engines. In addition, the engine during the intake of flammable gases are monitored and controlled to prevent over-rotation, and the engine power in dependence on the temperature is reduced in the Ansaugschächten.
The drive of the Nordic is diesel mechanically Flender reducer and shaft system on two running in fixed Kort nozzles pitch propeller manufacturer BERG Propulsion.