After experiencing numerous fall out on its previous maneuvering system, the Danish owned dredging vessel Idun R had its maneuvering system replaced with an LMB2100dual end of 2018. Since change of maneuvering system there has been no faults.
December 2018 Lyngaa Marine delivered an LMB2100dual Bridge Maneuvering System to the Danish owned dredging vessel Idun R. The previous system build up with traditional analog components such as transistors and amplifiers had during the past years started to drift, with repeating of-hire and endless calls for service, as a consequence.
Not only was the previous bridge control system taking care of maneuvers, but at the same time controlling the shaft generator connected to one main engine and the huge dredging pump connected to the other main engine. Both propulsion systems is operated either from the engine room, main helm station or the dredging station.
Contact free sensors
Idun is equipped with propellers and gears from the Dutch factory Lips Propellers. These propellers have the hydraulic servo amplifier placed in the propeller hub and a rod inside the propeller shaft transmitting actual pitch. Specially the sensors was one of the weak point causing many failures and was therefore changed to modern contact free position sensors improving lifetime and accuracy of the sensors.
Improved Engine Protection
To protect the engine two Selco M2600 shut down units and load feed back sensors for engine load where added to the two Smit-Bolnes 7DNL170/600 engines. Not only will the engines stop automatically in case overspeed of overspeed or a fatal engine failure, but the engines are also now protected against overload.
Changing Station in Command
Command is easily moved from engine room to bridge main helm or dredging station through the large 7” touch displays. The same displays offers a comprehensive overview of the propulsion plant performance including engine speed, propeller pitch, clutch position, engine power supplied and remaining power available. Bumbles transfer is easy performed simply by moving the engine or pitch lever until the two needles in the displays are over each other and needles changes color to green. Engaging the dredging pump is also performed from the same display and at the same time protecting the clutch from overload by shortly reducing engine speed during engaging.
In the center of the engine room the vertical maneuver console is placed. From the maneuver console all engine values can be controlled and monitored. Also from here engines are started and monitored before command is transferred to the bridge. An emergency mode is also available and gives access for the engineer to bypass the computers. In the control system.
Fully Integrated Alarm System
A fully integrated alarm system, with all standard facilities, such as alarm delays and suppression of alarms when equipment is not running, is integrated into the LMB2100 Bridge Maneuvering System offering supervision of levers, sensors, actuators as well as gear and engine conditions.
To avoid total loss of maneuvering capabilities the LMB2100 contains
a full backup system, allowing the navigators to maneuver the ship from the bridge even if the powerful maneuvering computer should fail. One of many features which lead to a more safe and reliable control system.
Why is LMB2100 so suitable for retrofit?
Already when starting the development of the LMB2100 back in 2014 the features for the new control system was planned. Among the features requested where flexibility in software and hardware. Full access to all internal parameters and a highly flexible display solution. But most of all only one software covering all requests. Specially the demand for only one software was a challenge which later became a mayor benefit. The LMB2100 can today be scaled up and down as well as adopting all types of propellers, engines, gearboxes, input and output. All LMB2100 runs with the same software. Previously delivered systems from Lyngaa Marine can be upgraded simply by making a firmware update. Setup and data remains the same after a firmware update and only the new features will be added. The ship can within a few minutes continue with its operation benefitting from the new features.