ObjectivesAs unmanned aerial vehicles are equipped with total field magnetic sensors to detect the total field anomaly above ships, it is necessary to establish a corresponding total field anomaly inversion model in order to evalu

ObjectiveAir-independent propulsion (AIP) submarines carry huge quantities of liquid oxygen. However, in the liquid oxygen combustion process, the cold energy is not usually recovered, and there are criticisms concerning CO2 remov

ObjectiveA method for calculating and selecting the minimum specific energy consumption working point is developed to solve the problem of high energy consumption in the short-distance slurry transport of dredgers.MethodsBased on

ObjectivesThis study analyzes the influencing factors of the aeroacoustic noise of cruise ship chimney exhaust pipelines, and predicts the noise level in the open area of a domestic cruise ship. MethodsA hybrid approach combining

ObjectiveIn order to monitor the health status of a centrifugal pump in real time, this study proposes a model for the real-time identification of the degradation state of centrifugal pumps. MethodsFirst, based on the operating pa

Underwater vehicles (UVs) not only play an important role in civilian fields, but have also been widely used in military fields and have broad application prospects. However, they are susceptible to the influence of the ocean curr

The extra-large unmanned underwater vehicle (XLUUV), as an underwater unmanned combat platform capable of carrying a large number of mission payloads, holds significant research value. This paper aims to provide a comprehensive un

Objectives To simulate the complex nonlinear interactions between the free surface and instantaneous wetted hull surface during ship navigation, an automatic mesh generation method is proposed.MethodsThe method takes a whole-hull

Objective In order to improve the actual efficiency of microbubble drag reduction technology, this study develops intelligent airflow control technology for microbubble drag reduction based on an improved ant colony optimization (

ObjectivesThis paper explores the effects of air flow rate and sailing angle on the air layer retention and energy efficiency of the bottom groove of a ship, focusing on a large scale model of a bulk carrier. MethodsAn air layer d

ObjectiveIn order to improve the efficiency of the finite element geometric modeling of hulls, to address the problem in which hull geometry models exported by ship design software cannot be directly used in finite element modelin

ObjectiveThis paper seeks to solve the problem of the partial failure of the actuator of an underwater salvage robot caused by a decrease in the shipborne power supply voltage or corrosion of the control system circuit. Methods Co

Objectives To overcome the challenges of tracking small targets in unmanned surface vehicle vision under the conditions of low feature resolution and similar environmental information, a multi-feature fusion-based continuous convo

ObjectivesThis paper seeks to solve the problem of excessive energy consumption caused by the excessive amplitude of the rudder angle and high frequency of rudder angle change during ship course-keeping.MethodsA closed-loop gain s

ObjectiveThis paper investigates the synchronization control problem for supply and supplied ships during underway replenishment in a constantly time-varying ocean environment while considering the ocean environmental disturbances

ObjectiveAs traditional ship crack detection methods based on artificial visual inspection and ultrasonic methods in ship repair and inspection processes have the characteristics of low efficiency, high cost and high danger, a shi

ObjectivesIn the application of sandwich composite materials in ship structures, to ensure the structural strength characteristics, bolt connections are usually used between the sandwich composite structure and steel main hull. Ho

ObjectivesIn order to accurately assess the ultimate load-bearing capacity of a hull structure under cyclic loading, it is necessary to consider the effects of the cyclic properties of the load on the ultimate strength of hull sti

ObjectivesThis study proposes a structural strain test method for investigating the buckling pressure of a composite shell in a high hydrostatic pressure water environment and the effects of different initial defects. MethodsA hig

ObjectivesTo solve the problem of applying thick carbon fiber laminates in naval architecture and marine engineering, this paper proposes a thick plate structure composed of thin carbon fiber laminates with reinforcing ribs and co

ObjectiveIn order to meet the development trend of low weight and high strength in the design of compression shell structures for deep-sea submersibles, this paper proposes a structural enhancement method which involves winding a

ObjectiveIn order to design and optimize the typical orthogonally stiffened plates commonly used in naval architecture and ocean engineering, it is necessary to investigate the influence of different stiffener configurations on th

ObjectiveIn order to study the stress distribution of circular holed infinite corrugated core sandwich panels under uniaxial tension and seek the most unfavorable opening position, Methodboth submodel analysis method and subproble

ObjectivesAs wheel loading on the vehicle decks of ro-ro ships may introduce difficulties for structural analysis due to the uncertainty of their quantities, ranges, and positions, it is necessary to study the equivalence and simp

ObjectiveAs specific and demanding requirements are imposed by measuring the impedance of the anechoic coatings on the hull surface of an underwater vehicle using the traditional water-filled tube experiment, a method of sound abs

ObjectiveA lightweight and efficient ship detection method based on the YOLO-FNC model is proposed for complex environments such as ports with dense traffic. MethodFirst, a FasterNeXt neural network module is designed on the basis

ObjectiveIt is vital to detect and track ships during coastal monitoring and ship navigation over long distances in complex circumstances. However, due to their small size and unclear features, they can be readily confused with sh

ObjectiveThis paper proposes a lightweight remote sensing ship target detection algorithm LR-YOLO based on improved YOLOv5s to meet the lightweight and fast inference requirements of ship target detection tasks involving remote se

ObjectiveTo address the problem of ultra-short baseline (USBL) relative navigation and positioning during the dynamic docking of an autonomous underwater vehicle (AUV) in shallow water, a compensated unscented particle filter (CUP

ObjectivesThis paper proposes a multi-source observation-based recovery bucket guidance docking strategy for the reliable recovery observation and motion goal tracking of unmanned surface vessels (USVs). MethodsDuring the entire d