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Seakeeping Hydrodynamics
Speed-Power Performance Estimation
- Development of a method for estimating the fuel consumption of ships by using weather & AIS data
- Development of ship’s speed-power performance estimation technique by using on-board measurement data
KR is conducting various researches related to operational performance of ship. KR have developed an algorithm that can estimate the approximate fuel consumption of a currently operating vessel by using AIS and weather data. In addition, KR developed a technique to analyze the operation performance of the target vessel in real time by statistically analyzing the actual operation measurement data of the vessel. When this technology is applied, the customer (shipper) can predict the present status of ship’s speed-power performance compared to the performance at the time of delivery, so it is possible to manage the ship maintenance plan such as hull management (painting, hull or propeller repair, etc.) and ship inspection.
  • Fuel Consumption estimation procedure by using AIS and weather data
  • ship's speed-power performance estimation technique by using on-board measurement data
Sloshing Load Assessment
- Research on sloshing load assessment and development of sloshing load evaluation guidance
KR is continuously conducting research on estimating the sloshing load that occurs in the cargo hold of LNG carriers in order to respond to the increasing demand and enlargement of LNG ships. Through joint industry project, integrated procedure for sloshing load assessment on LNG cargo was published in cooperation with domestic shipyards and research institutes, and current KR’s sloshing guidance was also revised to reflect the published integrated procedures.
Sloshing Assessment Procedure of KR
IMO Second Generation Intact Stability Criteria Assessment
- Development of Second Generation Intact Stability Assessment Program
- Development of procedure for applying Second Generation Intact Stability Criteria
Even for ships that satisfy the IMO's intact stability criteria, accidents continue to occur, and this is largely due to the problem of dynamic stability. Accordingly, IMO started developing the second-generation Intact Stability Criteria in 2009, and the interim guideline came into effect in 2020. KR is developing procedures and assessment programs to apply this regulation.
  • Simplified scheme of the application structure of the second generation intact stability criteria
  • Operational guidance sample of parametric roll
Ship Motion Assessment
- Development of ship motion analysis program
- Research on stochastic analysis
A ship motion analysis is performed to calculate the load for structural strength analysis and the operational efficiency of the ship. KR is conducting stochastic research such as short-term analysis and long-term analysis to generate loads that can evaluate structural strength. KR is continuously conducting research related to motion analysis in areas such as operational performance and minimum propulsion power regulation, which have recently become issues.
Nonlinear ship motion analysis for full ship assessment
Hydro-elastic Analysis
- Development of ultimate/fatigue strength assessment considering linear/nonlinear hydro-elastic effect
KR is continuously conducting researches that can reflect hydro-elastic effect such as whipping and springing in the hull design. KR conducted joint development project(JDP) with shipyards and research institutes, and developed a procedure for evaluating the hydro-elastic effects of ships with different characteristics, such as very large container ships or very large ore carriers. In addition, the developed procedure was revised through model tests and numerical analysis verification.
Analysis procedure of Hydro-elastic effects
  • Estimation of whipping effect due to slamming impact
  • Calculation of fatigue damage with non-linear springing effect