Domestic port development and operational efficiency are being promoted in accordance with the increase in maritime traffic volume and the size of ships. When developing or redeveloping ports or piers larger than a certain size, safety examinations in accordance with related laws and regulations must be carried out. Among the safety diagnosis items, 'marine transport system adequacy evaluation' must be performed, and many studies related to mooring safety included in the maritime transport system adequacy evaluation have been conducted. No study was conducted to compare and analyze the berthing energy by berthing speed and the energy absorption of the insect repellent actually installed at the pier by reflecting the specifications of ships with a port entry history.
In this study, Daesan Port was set as the spatial scope of the study, and the status of ships during 2011-2021 when they actually entered Daesan Port and the berthing piers of those ships were investigated. By evaluating the berthing energy at the time of berthing, the safety of the ship and the pier was reviewed by comparing the energy absorption power of the insect repellent installed in the pier.
As a result of comparing and analyzing the berthing energy of the target vessel by berth and berthing speed, in the case of Hanwha Total Dolphin wharf #37, it was analyzed that when a vessel exceeding 10% of the berthing capacity standard berths in a full state, when the berthing speed is 0.145 m/s, it has 1.66 times higher berthing energy than a vessel that satisfies the berthing capacity.
And in the case of Hyundai Oil-bank Dolphin wharf #16, when the berthing speed was 0.171 m/s, it was analyzed that the vessel exceeding 10% of the berthing capacity was 1.13 times higher.
In particular, in the case of Hanwha Total Dolphin wharf #37, it was confirmed that the berthing energy of the vessel exceeding the berthing capacity standard exceeds the energy absorption capacity of the insect repellent from the speed of 0.136m/s, which may impair the safety of the vessel and the pier.
However, in the evaluation of adjusting the deadweight tonnage to satisfy the berthing capacity, it was evaluated that the berthing energy of the vessel exceeding the berthing capacity also satisfies the absorption capacity of the insect repellent like the vessel that satisfies the berthing capacity.
As a result of the study, it was confirmed that there is a risk of damage to ships and piers even now because the specifications of ships that have actually entered ports were used instead of standard ships. To improve this problem, adjust the berthing speed according to the size of the vessel or limit the amount of cargo to enter the port. It is necessary to review such things.
It is judged that this study can be used as basic data for establishing basic port plans such as port development and improving maritime safety policies such as maritime traffic safety diagnosis in the future.