D6A – Radar observer


The course has been designed to meet requirements of STCW95 (Including amendments), section B-1/12 and based on IMO model course 1.07


The course covers theory necessary for understanding how radar work and how to use him

Course content:

  • basic theory and operation of marine radar system
  • data received by radar
  • performance standard for radars
  • effect of radar on magnetic compass
  • dangers of radar antenna radiation
  • strength of echoes depending of target material and weather conditions
  • false echoes
  • equipment and devices for improving radar echoes Racon, Ramark, SART
  • wave length band S and X , benefits and deficiencies
  • international regulations for preventing collisions at sea
  • switching on and adjustment of picture
  • determination of distance by radar
  • accuracy of distance determined by radar
  • ship’s position with 2 or more distances
  • determination of bow angle by radar
  • calculation of true bearing
  • ship’s position with bearing and distance
  • collision avoidance by radar
  • types of radar visualization and picture orientation
  • determining position of the ship and collision avoidance

Duration of the course 21 Hrs.