Following shall be considered when drawing up the course line
No-Go Areas
While safely navigable waters are restricted by such factors as draught, under keel clearance and tidal conditions, there are some Cautionary Zones called ‘No-Go Area’ where the ship cannot navigate safely. These areas must be shown by cross hatching (using only Pencil) in regions close to charted track.
To minimize the risk of getting stranded even in the occurrence of trouble on the Engine or Steering system, secure as much distance as possible from the Cautionary Zone.
Put down the Distance off Clearly on the chart using Parallel Indexing from the obstacles.
