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2 results

  • Some Human Factors Aspects of Single Manning

  • V. David Hopkin
  • Journal:
    The Journal of Navigation / Volume 43 / Issue 3 / September 1990
    Published online by Cambridge University Press:
    21 October 2009, pp. 343-352
    Print publication:
    September 1990

  • In many aviation and nautical contexts, single manning is common. Some aircraft and some vessels are designed for single manning with no choice. Others can have multiple or single manning, usually depending on such factors as operational requirements, mission objectives, intended human roles, task demands, workload, envisaged mission duration, and environmental conditions.

  • Keeping Look-Out Astern in River Navigation

  • W. G. P. Lamb, J. M. Hunt
  • Journal:
    The Journal of Navigation / Volume 43 / Issue 2 / May 1990
    Published online by Cambridge University Press:
    21 October 2009, pp. 263-269
    Print publication:
    May 1990

  • The collision between the dredger Bowbelle and the pleasure cruiser Marchioness on the Thames in August 1989 in the vicinity of the centre of London has drawn attention to the need for river mariners to keep a frequent look-out astern as well as ahead. This paper describes calculations of the minimum frequency at which observations astern are required in order to allow sufficient time for a ship about to be overtaken by a faster vessel to be able to take adequate avoidance action should the overtaking craft fail to keep clear.