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2 results

  • The Channel Navigation Information Service

  • A. H. Griffiths
  • Journal:
    The Journal of Navigation / Volume 47 / Issue 2 / May 1994
    Published online by Cambridge University Press:
    21 October 2009, pp. 117-120
    Print publication:
    May 1994

  • The recent history and background of the Channel Navigation Information Service (CNIS) have been well documented in this journal by my illustrious forebears, Captain Richard Emden and Commander James Neill. Whilst this paper describes some of the changes in the service since those papers were published, it may be appropriate to review the key events in the introduction of what was once a unique initiative, and remind the reader of the operational doctrine and philosophy of the system.

  • Quantitative Determination of Port VTMS Levels

  • Qiu Zhixiong
  • Journal:
    The Journal of Navigation / Volume 45 / Issue 2 / May 1992
    Published online by Cambridge University Press:
    21 October 2009, pp. 285-291
    Print publication:
    May 1992

  • In this paper, a quantitative study is made of the determination of the level of a vessel traffic management system (VTMS) in a port. Also established is a mathematical model, which conforms to the actual situation in Chinese ports and which takes account of the ideas contributed by experts in relevant fields. With the help of the model, the port needs for VTMS are evaluated in a comprehensive and objective way, the overall levels of VTMS are determined and their corresponding standards set. A computer simulation verification has proven the effectiveness of the model.