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JRB Operating Procedures Outline
From Diver to Boat
ONE PULL
To call attention. Made bottom.
TWO PULLS
Send me down a rope’s end (or other item as pre-arranged).
THREE PULLS
I am going down.
FOUR PULLS
May I come up?
FOUR PULLS & TWO BELLS
I want to come up. Assist me up.
SUCCESSION
(more than four)
Emergency Signal. Pull me up immediately
OF
PULLS
When the diver gives FOUR PULLS to signify he wishes to surface; the boat crew should maintain a
slight tension on the two line so that the diver knows that he is well clear of the boat before surfacing.
SEARCH PATTERNS
Search patterns are designed to cover an area in relation to each set of circumstances with maximum
efficiency in minimum time.
If you are involved in a search offshore with other rescue groups they should adopt a formal search
pattern.
Four main patterns are described.
TRACK LINE SEARCH
•
Could apply when a Club IRB calls in its location and is returning to the Club but does not arrive.
•
Mainly used if you are near the location and can attend quickly.
•
Search is run along a known or intended track.
•
Used when vessel assumed to be on track and survivors are capable of signalling.
Figure 15: Track line search
PARALLEL T RACK SEARCH
•
Used when Datum is unknown or has a large error.
•
Each track is run parallel to the intended or assumed path of target.
•
Provides coverage of a large area.
•
Best used when you are fairly sure that the target has maintained its track, or has a fairly accurate
draft line.
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