Roll reduction by rubber control for two ships during underway replenishment

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A theoretical method for analyzing roll reduction by rudder control for ships during underway replenishment is developed. The basic idea is that, when the rudder is operating, yaw and roll moments will be generated that affect the rolling motion. This idea has been proven to be valid for a single ship running in waves and, therefore, is also applied in the present paper. Using the well-developed strip theory for two ships advancing in waves, a better set of gain coefficients for roll reduction by rudder control can be predicted a priori. From the present results, it is found that suitable rudder control indeed can reduce rolling motion especially at the resonance frequency. The results obtained by the present method can offer some valuable information for a roll-reducing autopilot. Rudder control therefore can be considered as another tool for reducing rolling motion while two ships are executing underway replenishment at sea.

Original languageEnglish
Pages (from-to)141-150
Number of pages10
JournalJournal of Ship Research
Volume35
Issue number2
Publication statusPublished - 1991 Jun 1

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Numerical Analysis
  • Ocean Engineering
  • Mechanical Engineering
  • Applied Mathematics

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