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Stopping or Reducing Headway - Coggle Diagram
Stopping or Reducing Headway
Engine astern
No way
propeller astern
usually 25% power ahead
Too much time a room
Slewing about a base course
zig-zag num rumo
Most Practical
For VLCC
Round turn
Most efficient
Needs lots of room laterally
Deep water
3 shiplengths
shallow water
6 shiplengths
most useful in
Crossing at sea - need to manouevre to avoid collision
Slow ship before pilot arrival
make a lee for pilot
stop ship when loosing engine
Usually looses
25% to 30% each 90° turn