Long-Term Wave Measurement by an Onboard Radar Wave Meter and Prediction of Ship Motions Based on the Onboard Wave Measurements

Abstract

Continuous measurement of waves, ship motions (roll and pitch), and so on has been carried out for about five years by onboard monitoring system installed ocean-going vessel. Measured wave data, including wave height, wave period and wave direction, are thoroughly evaluated with corresponding onboard weather observation data by comparing directly in terms of time series and statistical values. Then, short term prediction of ship motions (roll and pitch) based on the measured wave data are compared with onboard motion data measured by vertical gyro. From the results described, good accuracy and effectiveness of wave measurements by an onboard radar wave meter for safe navigation are demonstrated.

On the use of leading safety indicators in maritime and their feasibility for Maritime Autonomous Surface Ships

“…86–95 The remaining two papers discuss other related phenomena and techniques applicable for the stability assessment. 96,97…”

“…The reviewed works deal with the dynamic phenomena at different levels of complexity. Some of them focus on the development of techniques of monitoring the ship’s responses, 92 including onboard radar wave 97 measurements. However, the most comprehensive approach concentrates on ship capsizing.…”

“…[86][87][88][89][90][91][92][93][94][95] The remaining two papers discuss other related phenomena and techniques applicable for the stability assessment. 96,97 To identify ship stability-related LPIs capable of providing alerting information in due time the two-fold reasoning has been applied. Firstly, the actual state of ship stability ought to be evaluated and secondly, assessed by adopted thresholds.…”