Prediction of Residual Resistance Coefficient of Low-Speed Full Ships Using Hull Form Variables and Machine Learning Approaches

Yoo-Chul Kim, Kyung-Kyu Yang, Myung-Soo Kim, Young-Yeon Lee, Kwang-Soo Kim

In this study, machine learning techniques were applied to predict the residual resistance coefficient (Cr) of low-speed full ships. The used machine learning m...

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DOI: https://doi.org/10.3744/SNAK.2020.57.6.312

A Study on the Characteristics of Underwater Explosion for the Development of a Non-Explosive Test System

Hansol Lee, Kyudong Park, Yangsub Na, Seunggyu Lee, Kyunghoon Pack, Hyun Chung

This study deals with underwater explosion (UNDEX) characteristics of various non-explosive underwater shock sources for the development of non-explosive underw...

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DOI: https://doi.org/10.3744/SNAK.2020.57.6.322

Tune of Hydrodynamic Coefficients Based on Empirical Formula by Using Manoeuvring Performance Indices of a Ship

Dong Jin Kim, Yeon Gyu Kim

Ship’s hydrodynamic coefficients in manoeuvring equations are generally derived by captive model tests or numerical calculations. Empirical formulas have been a...

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DOI: https://doi.org/10.3744/SNAK.2020.57.6.331

A Study on Full-Scale Crabbing Test Using Dynamic Positioning System

Jong-Yong Park, Jun-Ho Lee

This study aims to investigate the crabbing motion of the research vessel “NARA” by full-scale maneuvering trials. The crabbing test method refers to ITTC recom...

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DOI: https://doi.org/10.3744/SNAK.2020.57.6.345

Study on the Semi-Analytical Ice Load Calculation Methods for the Ice-Breaking Simulation

Jeong-Hwan Kim, Beom-Seon Jang, Yooil Kim

This paper presents the semi-analytical ice load calculation methods that are useful to simulate the ice-breaking process. Since the semi-analytical methods rel...

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DOI: https://doi.org/10.3744/SNAK.2020.57.6.353

Basic Experimental Study for Ice-Concrete Friction Behavior

Youngjun Do, Yooil Kim

Ice induced abrasion is known as a critical problem in concrete gravity based offshore structures, which are mainly used in the arctic regions. Although many re...

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DOI: https://doi.org/10.3744/SNAK.2020.57.6.365

Development of Hybrid Prototype Dual Load Cell Structure

Juh-Hyeok Ham

We have developed the hybrid prototype load cell structures. These developed load cell structures may increase the reliability of the load sensing by deriving t...

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DOI: https://doi.org/10.3744/SNAK.2020.57.6.373

Study on Optimization of Post-Device for Self-Propulsion Performance Improvement of KVLCC2

Hyeon-Ung Kim, Moon-Chan Kim, Jin-Gu Kang, Taek-Geun Youn

According to the increase of concern for environmental problems, the energy saving becomes an important issue because it is one of the most effective methods of...

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DOI: https://doi.org/10.3744/SNAK.2020.57.6.381