What are the Standard methods of maneuver of man overboard as per IAMSAR ?

What is Williamson turn?

Williamson turn:

  • Makes good original track line.
  • Good in reduced visibility.
  • Simple & Slow procedure. 
  • Takes the ship farther away from the scene of the incident. 
  • Rudder hard over (in an immediate action situation only) to the side of the casualty.
  • After deviating from the original course by 60 deg. The rudder hard over to the opposite side.
  • When heading 20 deg’s short of the opposite course, rudder to midship position and the ship to be turned to opposite course.

22

What is  single  turn/ Anderson turn?

Single turn or Anderson turn:

  • Fastest recovery method.
  • Good for ships with tight turning characteristics.
  • Used most by ships with considerable power.
  • Very difficult for single screw vessels.
  • Very difficult because approach to person is not straight.
  • Rudder hard over (in an immediate action situation only) to the side of the casualty.  
  • After deviation from the course by 250 degs rudder to midship position.
  • Stopping manoeuvre to be initiated

33

What is Scharnov turn?

Scharnov turn:

  • Will take vessel back to her wake.
  • Less distance is covered hence saving time.
  • Cannot be carried out effectively unless the time elapsed between occurence of the incident.
  • The commencement of the manoeuvre is known. 
  • Not to be used in an immediate action situation.
  • Rudder hard over.
  • After deviation from the original course by 240 degs rudder hard over to the oposite side. 
  • When heading 20 degs short of the opposite course, rudder to midship position so that ship will turn to the opposite course.

32

 

AMIT KUMAR

Leave a Comment

From Marine Enclyopedia to MARINE GYAAN ACADEMY in Lucknow - Preparing YOUTH to become SEAFARERS ( for IMU-CET and various courses) From Marine Enclyopedia to MARINE GYAAN ACADEMY in Lucknow - Preparing YOUTH to become SEAFARERS ( for IMU-CET and various courses) From Marine Enclyopedia to MARINE GYAAN ACADEMY in Lucknow - Preparing YOUTH to become SEAFARERS ( for IMU-CET and various courses) From Marine Enclyopedia to MARINE GYAAN ACADEMY in Lucknow - Preparing YOUTH to become SEAFARERS ( for IMU-CET and various courses)