On May 13th, 2025, a collaborative effort between Nippon Yusen Kabushiki Kaisha (NYK Line), JERA Co., Inc. (JERA), and Trelleborg Marine & Infrastructure (TMI) resulted in the installation of a cutting-edge DynaMoor mooring system at the coal unloading berth of JERA’s Hitachinaka Thermal Power Station, located in Ibaraki Prefecture, Japan, reports NYK.
The DynaMoor System
DynaMoor, a mooring system designed to minimize ship sway and surge while a vessel is berthed, has commenced trial operations using actual ships. This marks the first instance of the system being utilized in Japan.
Two DynaMoor units have been installed at the specified berth for a year-long testing period. During the trials, motion sensors will be affixed to the berthed vessels to precisely measure any sway and surge of the ship’s hull when the DynaMoor system is in use. The primary objective of these tests is to verify the effectiveness of DynaMoor in reducing the motion of berthed vessels and consequently enhancing the safety and efficiency of port operations.
Developed by TMI, the DynaMoor system functions by automatically regulating the tension of mooring lines to counteract and reduce the movement of a ship’s hull. This tension adjustment is achieved through an electronically controlled hydraulic damper. The damper moves the quick-release hook, which is connected to the end of the mooring line, back and forth along a rail. This movement is dynamically adjusted based on the real-time motion of the ship’s hull.
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Source: NYK
