Creeping Line Parallel Line
Creeping / Parallel Line search pattern
requirements
The use of the search patterns feature will usually
be in conjunction with a coordinated Search and
Rescue mission, whereby the Coastguard will issue
the relevant details to enable creation of the search
pattern. The guidance below will enable you to
create your own Creeping or Parallel Line search
pattern.
Corner points
• The corner points must be positioned to create a
rectangular shape.
• Each corner must be between 85° to 95° (i.e. right
angle ± 5°) of the adjacent corner point.
• Corner points cannot be located above 85° N
latitude or below 85° S latitude (the area covered
by the Chart application).
CSP
• The CSP must be on one of the sides of the
search pattern.
• For a Creeping Line search pattern the CSP must
be located along one of the longer sides.
• For a Parallel Line search pattern the CSP must
be located along one of the shorter sides.
• The CSP must be on a bearing of between 85° to
95° (i.e. right angle ± 5°) from the previous side.
• The CSP should be half a track width from the
corner point.
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