State Key Laboratory of Ocean Engineering

Interaction between large-diameter offshore wind turbine monopiles and adjacent spudcan penetration and extraction in clay

Large-diameter monopiles are used for offshore wind turbines, while adjacent jack-up spudcan operations may induce soil deformation and compromise serviceability. Existing spudcan–pile interaction studies have focused on pile response during penetration, with limited attention to...

Comprehensive energy efficiency assessment and validation of ship shaft generator and hydrodynamic energy-saving systems under actual operating conditions

Widely used energy efficiency indicators, including the Energy Efficiency Design Index (EEDI), Energy Efficiency Existing Ship Index (EEXI), and Carbon Intensity Indicator (CII), have limitations in assessing the comprehensive energy efficiency of ocean-going ships under actual o...

Interpretability-enhanced temporal surrogate modeling for wave-induced scour vulnerability assessment of vertical-wall structures

Scour compromises the stability and safety of vertical-wall structures, necessitating a systematic method to assess scour vulnerability. However, two key vulnerability elements remain unresolved, namely suitable grading thresholds and an efficient temporal scour surrogate model....

Structure-Acoustic Coupling Analysis of Underwater Acoustic Radiation Characteristics of a Multiple Intersecting Spherical Shell Under Acoustic Excitation

The underwater acoustic radiation of deepwater submersibles has become a growing concern in both academic and industrial communities. This study investigates the structure-acoustic coupling characteristics of a novel deepwater pressure hull, idealized as a triple spherical shell....

Efficient complete coverage path planning for mining vehicles in complex environments via region decomposition and finite-state control

Complete coverage path planning for deep-sea mining vehicles is difficult because large mining areas require coordinated planning across multiple spatial scales, while dense and irregular obstacles can readily induce coverage deadlocks. This paper proposes a three-tier hierarchic...