For pt.II, see ibid., no.5, p.149-55, March 1975. Navigational problems in merchant ships are discussed with particular attention to steering, and the maintenance of a course, relative to a compass course, under the influence of currents, surface waves and hydraulic damping factors. Algebraic and differential equations are given, with rate-of-turn defined as the first derivative of the compass course with respect to time. A block diagram shows the principle of the PID analogue-computer control of steering. On-line navigation systems are noted in the context of radio senders and receivers, typically in the 10 to 14 kHz range, using several sending stations and a lane identification technique.
Computers on board merchant ships. III. What is to be automated?
Computer an Bord von Handelsschiffen 3. Was muss automatisiert werden?
Titel niederlaendisch
Polytechnisch Tijdschrift. Editie Elektrotechniek, Elektronica ; 30 , 6 ; 186-192
1975
Article (Journal)
Dutch
Computers on board merchant ships. IV
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