Lightweighting Shipyard 3D Deep Learning Dataset and Object Detection Performance Analysis Using FPFH-Based Geometric Feature Augmentation

Ki-Seok Jung, Dong-Kun Lee

As digital twin technology for implementing smart shipyards advances, research on object detection using 3D point cloud has become increasingly necessary. Shipy...

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DOI: https://doi.org/10.3744/SNAK.2025.62.5.280

An Investigation on the Heat Flow Characteristics by a Mixing Tube Shape of IRSS

Jung-Kyu Choi, Hyoung-Tae Kim, Kyoung-Hwan Kim, Yong-Son Hwang

In this study, the flow characteristics and temperature reduction performance of a mixing tube for an Infrared Signal Suppression (IRSS) device were investigate...

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DOI: https://doi.org/10.3744/SNAK.2025.62.5.290

Optimization of a Dynamic Obstacle Avoidance Algorithm Based on MPC with Relaxed Control Barrier Function Constraints

Jin-Hyeok Seo, Si-Won Kim, Jeong-Hyeon Kim, Sun-Hyuck Im, Seong-Hyeon Jeong, Hyo-Eun Kang, Nak-Wan Kim, Jong-Yong Park

This paper presents an rCBF–MPC (relaxed Control Barrier Function–Model Predictive Control) framework for robust collision avoidance of autonomous surface vesse...

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DOI: https://doi.org/10.3744/SNAK.2025.62.5.303

CFD-based Analysis of Scale Effects on the Open-Water Performance of Ducted Propellers

Jeongjae Kim, Ji-Hye Kim

This study investigates the scale effects on the open-water performance of a ducted propeller through RANS-based numerical simulations using the commercial CFD ...

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DOI: https://doi.org/10.3744/SNAK.2025.62.5.315

A Study on Vibration Criteria for Status Evaluation of the Reduction Gear for Naval Vessels

Gahyang Lee, Deokjoo Kim, Soohong Jeon, Yonghoon Kim, Suha Hwang, Sungchul Ha

In this paper, the purpose of a study is to evaluate the vibration characteristics of the reduction gear for mounting naval vessels and to present new vibration...

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DOI: https://doi.org/10.3744/SNAK.2025.62.5.325

GA-Based Parametric Estimation of Directional Wave Spectrum Around a 9,400 TEU Container Ship Using Full-Scale Measurement Data

Wuseon Song, Jaehyeon Son, Yooil Kim

The structural integrity of ships and offshore structures is a critical aspect of maritime engineering, as these structures are continuously subjected to comple...

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DOI: https://doi.org/10.3744/SNAK.2025.62.5.334

Hydrodynamics Modeling of Control Fins of TL-AUV by Computational Fluid Dynamics Analysis

Younhee Kwon, Dong-Hwan Kim, Jeonghwa Seo

The hydrodynamics of a control fin for an autonomous underwater vehicle (AUV) is modeled based on computational fluid dynamics analysis (CFD). The fin is design...

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DOI: https://doi.org/10.3744/SNAK.2025.62.5.343

Analysis of Bubbly Flow Generated by a Free Surface Piercing Cylinder Using OpenCV

Mina Kim, Ji-Woo Hong, Byoung-Kwon Ahn

The hydrodynamic characteristics of flow around a surface piercing cylinder is still important in the field of naval architecture and ocean engineering. Various...

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DOI: https://doi.org/10.3744/SNAK.2025.62.5.354