How do you use a whistle in (emergency) situations?

 Sending out a sound of signals for communication in cases where there is no direct line of sight or when background noise prevents other communication.

RECOMMENDED COMMUNICATION CODE:
the whistles must be made energetic and keep enough separation between them.

• A whistle: indicates STOP.
  Stop the maneuver we're doing.
• Two whistles: indicate LI-BRE.
  Free rope
• Three whistles: Indicate DES-CEN-DER
  Needed to untie the rope for the abseiler that means lowering it into the base or member that is blocked.
• Four whistles: indicates RE-CU-PE-RER.
  It is necessary to reel in the rope from above because of excess rope which can cause problems at the end of the abseil.

Depending on the activities, other and/or additional arrangements can be made within the group.
It is always important that there are clear agreements before the activity is started.

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