Methods of Initiation

Methods of Initiation
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The Cobra system has various methods of initiation dependent upon individual requirements ranging from the Manual Handheld Initiator, (which is provided in the Cobra Toolkit), to RF and Acoustic Initiation.

Handheld initiator
The Manual Initiator is a simple and effective hand-held device that uses a standard Shot Shell Primer cartridge. It provides a cost effective and reliable all-weather means of initiating shock tube.
Recommended depth - Surface to 300 metres

Acoustic Initiation
The acoustic initiation module has been developed to provide a compact method of initiation when shocktube or RF are inappropriate. Using this method a surface float is not required.
Recommended depth - 50 metres to 300 metres

Surface Initiation Float
The re-useable Surface Initiation Float can hold a variety of proprietary RF shocktube initiators. The “Breach” initiator allows a standoff from target of typically 1km, other RF initiators can increase this range to 25kms.
Recommended depth - Surface to 300 metres

Tow-Behind Float
The Stealth and Tow-Behind Float employ a disposable coded RF initiator. Once deployed they can be initiated individually or by a single “page” signal.
Recommended depth - 10 metres to 30 metres

Submersible, Releasble Float - SRF
The SRF also uses a disposable RF initiator that is held in a float that is released upon attachment to the target and initiated remotely by the coded RF link.
Recommended depth - 20 metres to 100 metres


Hand held manual shocktube initiator

Re-useable float

Re-Useable RF Initiation Float

Stealth Float

RF Stealth float (obscured in seaweed)