... of the operation, it is easy to produce a large negative pressure when the pile is pulled, resulting in a large pile pulling resistance. Especially when the pile boots are deep into the mud and the original platform punching pile system is old, it is difficult to guarantee the efficiency of punching pile...

... that for in-service conventional jacket platforms, the average load transfer efficiency is 10.8%; For minimum platforms, the average load transfer efficiency is 14.3%. The numerical simulation has verified that the method of improving the platform's bearing capacity by transferring loads to conductors is feasible...

... ABSTRACT In order to further improve the operating efficiency of the Three Gorges ship lift, it is urgent to establish a prediction model of the ship passing time of the Three Gorges ship lift to predict the duration of the ship passing through the ship lift cabin. This paper uses the Whale...

...Proceedings of the Thirty-fourth (2024) International Ocean and Polar Engineering Conference Rhodes, Greece, June 16 21, 2024 Copyright © 2024 by the International Society of Offshore and Polar Engineers (ISOPE) ISBN 978-1-880653-78-4; ISSN 1098-6189 www.isope.org Efficient Resource Allocation...

... ABSTRACT To ensure the traffic efficiency of ships passing through tunnels, this article introduces the towing method of ships passing through tunnels in the Three Gorges New Channel. And based on the Arena software platform, construct a simulation model for ship traffic efficiency. Research...

... ABSTRACT A framework is introduced to compare fuel efficiencies of each route and calculate fuel savings by optimizing routes and operational strategies. By integrating mathematical models and machine learning techniques, the study standardizes various operational conditions for accurate fuel...

... of the radial distance between the gate rudder and the propeller is also analyzed, indicating that the open-water efficiency can be improved about 4% when the distance is 1.15 R . The gate rudder system in maneuvering is finally simulated. It shows that the gate rudder can produce more transverse force...

..., it is urgent to improve the energy efficiency level of ships. One effective method recognized by both academia and the industry is the utilization of hybrid power systems (HPSs), especially for ships with complex working conditions, such as the polar mini cruise ship (Inal, Charpentier et al. 2022). The HPSs...

..., which realized the economic and efficient comprehensive utilization of diesel-electric power energy. Shui Pang et al (2020) took an offshore engineering vessel power system as the research object, studied the characteristics of its seven standard operating conditions, and extracted the power demand...

... efficiency, and minimize boil-off gas during loading operation. Subsequent to LNG unloading from the cargo tank, operations such as warm-up, gas-freeing, and aeration are carried out to restore the tank to its initial state. Among the aforementioned operations, inerting, gassing-up, gas-freeing, and aeration...

... that sometimes could drive the propulsion system at its limits, resulting in involuntary speed reduction and excessive fuel consumption. In this work the effects of wave-induced vertical oscillatory stern motion of the ship on the modification of propulsive thrust and efficiency are examined by means of Unsteady...

... of 1000-ton cargo ships. Next, a main scale optimization model is established for Jialing River 1000-ton cargo ships, with the necessary freight rates and carbon emissions as objectives, and ship lock traffic efficiency as constraints. To solve the problem, the second-generation non-dominated sorting...

.... The research results will effectively guide the preliminary design of trimarans and provide technical support for high-speed navigation of trimarans. INTRODUCTION Ship resistance performance has always been valued by designers to improve the efficiency of ship navigation, especially under the global calls...

... ABSTRACT Ship's propulsion efficiency plays a key role in cutting emissions together with other major technological advances in alternative fuel and energy sources, such as batteries and fuel cells. However, the availability and price of energy increases the importance of energy efficiency...

... are the most basic and attention-grabbing characteristics for propellers on account of their significant roles in the ship performance. Propulsion factors like thrust deduction, wake fraction and relative rotation efficiency, which reflect the interference between hull and propeller, are typically calculated...

... the real optimal solution sets in the design space. Firstly, the accuracy and efficiency of the adaptive sampling method are verified by multi-objective mathematical functions. Then, based on this method, the resistance and wake performance of KCS ship at Fr = 0.26 is optimized. In order to reduce...

..., the pump-jet propulsor has the advantages of high propulsor efficiency, low vibration and low noise. However, the pump-jet propulsor is usually fitted with a hub with a large diameter that is highly integrated as a part of the underwater vehicle to ensure the flow smoothly run off the hull body...

.... The maneuverability is of significant importance for its economic efficiency, safety, and energy conservation during navigation. Considering the aspect of navigational safety, the International Maritime Organization (IMO) established mandatory maneuverability standards for new ship constructions in the early 21st...

... A* algorithm is utilized to achieve global path optimization and corner optimization, and the global path is smoothed based on cubic B-spline interpolation curves. By adjusting the weight w ( n ) in the improved A* algorithm, the search efficiency is improved; by optimizing the corners of the global path...

... deflects the water backwards from its natural vertical flow, and the water inertia pushes the vessel forward. The new wave energy converter does not have any parts that move or protrude outside the hull. The converter can operate entirely underwater, but CFD and model tests show that efficiency increases...