The principles of the simulator described, in particular the way in which the outside view is presented, are shown schematically. A television recording element is steered through a model by the subject (helmsman) and the recorded image is directly projected on a screen in front of the mock-up bridge. The subject is on this bridge, which is equipped in such a manner that all actions to control the required course and speed can be performed as in reality. These controlling actions are passed on to a hybrid calculating installation which plots the course followed. For this purpose the computer has been provided with a mathematical description of the ship's input/output relation. Through a set of interfaces and driving systems the course is converted into displacements of the TV element which moves through a scale model of the waterway. The displacements are achieved by a rather extensive camera-guiding mechanism which permits movements in four directions: three translations and one rotation on a vertical axis. Possible additional elements which may also influence the ship's course such as tide and wind may be added to the programming of the computer. The TV element can record an image over an angle of 360 degrees but only a range of 120 degrees is at present used. The recorded image of the model is reflected by means of a number of television projectors on a screen in front of the mock-up. In this way one of the most important requirements of dynamic simulation is met, namely the external scene which is the basis on which the subject decides his course and speed reactions (unprogrammed external view). The device dedscribed and illustrated in the article constitutes a closed system and is analogous to the real task of a helmsman.

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  • Corporate Authors:

    Royal Institute of Navigation

    Royal Geographical Society, 1 Kensington Gore
    London SW7,   England 

    Royal Institute of Navigation

    1 Kensington Gore
    London,   England 
  • Authors:
    • Lazet, A
    • Schuffel, H
  • Publication Date: 1978-1

Media Info

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Filing Info

  • Accession Number: 00173273
  • Record Type: Publication
  • Source Agency: Journal of Navigation
  • Files: TRIS
  • Created Date: Apr 26 1978 12:00AM