Enok (ship)

Enok

Ship data flag  Germany other ship names Gerhard Jüttner Ship type Cargo ship Shipyard Ruthof, Mainz-Kastel Build number 1394 Commissioning 1955

Ship dimensions and crew length 85 m ( Lüa ) width 9.5 m Draft Max. 2.5 m

Machine system machine diesel-electric 4 × diesel engine 2 × electric motor propeller 2

Transport capacities Load capacity 1,500 dw

View into the engine room with the encapsulated diesel generators and electric traction motors

Bridge of the Enok , view of the control stand of the drive system

The Enok is a motor freight ship built in 1955 and converted to diesel-electric propulsion in 2010 . The special feature of this drive are electrical generators and traction motors , which are equipped with permanent magnets for excitation and frequency converters.

Ship description

The Enok is 85 m long and 9.5 m wide. The ship's load capacity is 1,500 tons with a draft of 2.5 m.

The Enok was built in 1955 under construction number 1394 as Gerhard Jüttner at the Ruthof shipyard in Mainz-Kastel and, after being acquired by Torque Marine in 2009, converted to diesel-electric drive at the Friedrich-Werft shipyard in Kiel.

Diesel-electric propulsion system

When converting to a diesel-electric drive, a total of four sound-encapsulated diesel generator sets were installed, two at the front and two at the rear. In addition, two electric traction motors were installed in the engine room for the two existing propellers . The power of the diesel generators is converted into direct current via rectifiers and fed into the intermediate circuit. The electric motors take their drive power from this, which is then converted back into three-phase current via a converter . This combines the advantages of three-phase current (low wear in the generators and motors) with the advantages of direct current (no time delays when switching on a generator due to the synchronization).

This innovative drive system was developed by the company Torque Marine (C.-D. Christophel; H.-H. Schramm) under the influence of the Development Center for Ship Technology and Transport Systems (DST) in Duisburg at the suggestion of J. Zöllner. This is to better meet the extremely different requirements ( uphill , downhill, high water , low water , with different drafts depending on the cargo weight) in inland shipping. In addition to the faster adaptation to the maneuver operation, a 10–20 percent lower fuel consumption is also expected.

literature

• J. Zöllner: Fluidic possibilities for reducing fuel consumption and CO ₂ emissions from inland vessels . (Lecture at the CCNR Congress on Rhine Shipping and Climate Change , on June 24/25, 2009 in Bonn).