Development of augmented virtual reality-based operator training system for accident prevention in a refinery
Abstract A new operator training system that trains both control room and field operators by coupling dynamic processes and accident simulations, thereby preventing potential hazards in a chemical plant, is proposed. The two types of operators were trained in different training environments — a conventional distributed control system interface for the control room operators and […]
Algorithm development for the spool installation sequence of outfitting works in offshore structure
Abstract In the early 2000s, shipyards in South Korea were the most competitive in the world for commercial vessels because of their accumulated production and quality management capabilities. In the mid-2000s, the rising trend of international oil prices and predicted market growth of offshore structures caused large shipyards in South Korea to start focusing on […]
Deep Reinforcement Learning-based Collision Avoidance for an Autonomous Ship
Abstract Social interest in autonomous navigation systems for autonomous ships is also increasing. For a robust autonomous navigation system, the location, speed, and direction of the ship and other ships must be identified in real time, and collision avoidance should be performed at an appropriate time by considering the collision risk. In this study, we proposed a collision avoidance method […]
Ship Route Planning in Arctic Ocean Based on POLARIS
Abstract The thawing of sea ice in the North Pole accelerates the opening of new shipping routes through the Arctic Ocean. To identify an economical and safe shipping route in the Arctic Ocean, a risk assessment of the ice regime and an optimization of the route that minimizes the total power consumption should be performed. In this […]
Optimum Design of the Underwater Discharge System Based on Surrogate Modeling
Abstract Underwater vehicles are equipped with a device for discharging projectiles, called the underwater discharge system. Because these vehicles have limited space, many studies have attempted to reduce the volume of the underwater discharge system while improving its performance. However, owing to the characteristics of the system, the occupied volume and performance conflict with each […]
Quantitative Calculation Method of the Collision Risk for Collision Avoidance in Ship Navigation Using the CPA and Ship Domain
Abstract Collision risk (CR) assessment is necessary for avoiding collisions with other ships. The CR can be used to make decisions on collision avoidance. In this respect, the ship domain and the closest point of approach (CPA)-based methods have been proposed to assess the CRs. However, the ship domain method is limited in terms of […]
Operational Analysis of Container Ships by Using Maritime Big Data
Abstract The shipping company or the operator determines the mode of operation of a ship. In the case of container ships, there may be various operating patterns employed to arrive at the destination within the stipulated time. In addition, depending on the influence of the ocean’s environmental conditions, the speed and the route can be […]
An Optimization Model of Tugboat Operation for Conveying a Large Surface Vessel
Abstract In general, tugboats are used to convey many kinds of surface vessels, including unactuated vessels, such as barge ships and offshore structures. This requires an adequate model for tugboat operation to precisely take into account surge, sway, and yaw motions. We present an optimization method of tugboat operation for conveying a large surface vessel […]
Experimental study for characteristics of slamming loads on bow of a ship-type FPSO under breaking and irregular wave conditions
Abstract An experimental investigation of the characteristics of the slamming impact loads on the bow of a ship-type Floating Production Storage and Offloading (FPSO) under breaking and irregular wave conditions was conducted. The breaking waves were generated by the focusing wave method and three different heading angles were applied. To examine the repeatability of the slamming loads, the model experiments were […]
An Investigation of the Performance of a Pusher-Barge System Considering Advancing Velocity in Regular Waves
Abstract This study investigates the performance of a pusher-barge system advancing in regular waves. The numerical simulation is carried out through the implementation of an in-house code, “AdFlow” (Advanced Analysis System for Floating Bodies in Waves), for the evaluation of first-order hydrodynamic properties. AdFlow allows the numerical analysis of motion responses by solving the potential […]
