ROV Based Condition Monitoring of Quay Wall Bottom and Maneuverability effect of vessels with large draft and thruster in Shahid Rajaee harbour

The size of the ships which navigate in seas and inland waterways is increasing, mainly for economic reasons. A bigger ship needs a bigger thrust force to push it forward. Large vessels with the powerfulpropellants usually equip a bow thruster for effective ship operation. Subsequently a higher velocitypropeller wash is induced. However these thrusters generate the strong current which may cause a local scour in front of a quay wall and affect its stability. The loads on bottom protection differ,because of diversity in shipping and tidal motion. This paper reports the development of a newremotely operated vehicle (ROV) based test facility and purpose-built by the authors to investigate unsteady dynamics of large marine thrusters on the profile of sedimentations near a quay wall ofShahid Rajaee harbor. Laboratory experiment has been conducted to measure the local scour due tojet-like strong current which simulates, the strong current due to main and bow thrusters. The demands of stability required to guarantee a stable and safe bottom protection, this bottom protection is studied with soundings.

کلیدواژه ها:

Quay wall ، Bottom protection ، Large vessels ، thrusters ، monitoring ، ROV based test bed ، Propeller simulation ،