COBRA


COBRA (Compact Bailout Rebreathing Apparatus) is a unique bailout system combining significant safety advancements while remaining easy to operate and maintain.

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Designed and developed by JFD as part of its Divex range of rebreathers, COBRA is a direct and highly effectual response to the urgent need for significant safety improvements in the saturation diving industry.

COBRA is the only commercial emergency rebreather system in the world to have been granted CE Marking status to NORSOK U101 (Diving Respiratory Equipment) and EN14143 (Self Contained Rebreathing Apparatus), leading the way in terms of safety and functionality.

The system supplies an extended duration of fully independent breathing gas in an emergency scenario, and is designed to be smaller than most bailout systems. Like all Divex breathing systems, COBRA is robust and reliable with a very low work of breathing. 

Category Document name Document no Revision Upload date Click to download
Datasheet COBRA (Compact Bailout Rebreathing Apparatus) DE-MDS-6609 R2 25/10/2017 PDF (1).png
Brochure COBRA (Compact Bailout Rebreathing Apparatus) DOC-BRO-2 R0 24/10/2018 PDF (1).png
Certificate EU Declaration of Conformity P2177-DC-1434 R9 02/03/2023 PDF (1).png
Product guidance note COBRA hot water relief value - interim guidance  DB500-PGN-2 R0 24/05/2019  PDF (1).png
Product guidance note COBRA activation / ascent issues  DB500-PGN-3 R0  27/05/2019 PDF (1).png
Product guidance note COBRA hot water relief valve - spring replacement DB500-PGN-4 R1 09/07/2019 PDF (1).png
Product guidance note COBRA - user queries / practices DB500-PGN-5 R0 17/06/2019 PDF (1).png
Product guidance note COBRA replacement hoses DB500-PGN-6 R0 21/06/2019 PDF (1).png
Product guidance note COBRA - general guidance based on user feedback DB500-PGN-7 R0 30/09/2019 PDF (1).png
Product guidance note Fitting of COBRA scrubber DB500-PGN-9 R0 12/03/2020 PDF (1).png
Product guidance note COBRA duration at shallow depths - interim guidance DB500-PGN-10 R0 22/04/2020 PDF (1).png
Product guidance note COBRA replacement of incorrect mounting screws   DB500-PGN-11 R0 06/08/2020 PDF (1).png
Product guidance note COBRA Advisory Notice Hot Water Housing Upgrade DB500-PGN-13 R0 18/11/2021 PDF (1).png
Product guidance note COBRA Advisory Notice Hot Water Hose Spigot DB500-PGN-14 R1 18/11/2021 PDF (1).png
Product guidance note COBRA Advisory Notice Head Exhaust Valves DB500-PGN-15 R0 18/11/2021 PDF (1).png
Product guidance note COBRA Advisory Notice Composite Cylinder DB500-PGN-16 R1 18/11/2021 PDF (1).png
Product guidance note COBRA Advisory Notice Pre-use procedures DB500-PGN-17 R0 18/11/2021 PDF (1).png
Product guidance note COBRA Advisory Handle Manifold becoming loose DB500-PGN-18 R0 22/11/2021 PDF (1).png
Product caution notice COBRA Safety notice DB500-PCN-1 R0 17/11/2020 PDF (1).png
Product caution notice COBRA Return to Service Notice DB500-PCN-2 R0 18/11/2021 PDF (1).png
Product guidance note COBRA Advisory Notice Leak at Joint DB500-PGN-19 R0 26/01/2022 PDF (1).png
Product guidance note COBRA Advisory Notice Setting Positive Pressure DB500-PGN-20 R0 25/05/2022 PDF (1).png
Product guidance note COBRA Advisory Notice Duration Tables DB500-PGN-21 R0 22/09/2022 PDF (1).png
Product guidance note COBRA Advisory Notice Top Handle DB500-PGN-22 R0 01/01/2022 PDF (1).png
Product guidance note COBRA Advisory Notice Various Minor Items DB500-PGN-23 R0 07/06/2023 PDF (1).png
Product guidance note COBRA Advisory Notice Breathing Hose Guidance DB500-PGN-24 R0 07/06/2023 PDF (1).png
COBRA first dive in North Sea 2018 COBRA in dive tank COBRA in dive tank COBRA in dive tank COBRA in dive tank COBRA on diver - front view COBRA helmet COBRA backpack and helmet

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North Sea first dive COBRA - Prod.jpg

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COBRA rebreather - Prod3.jpg

View full imageCOBRA on diver front view - Prod.jpg

View full imageCOBRA helmet - Prod.jpg

View full imageCOBRA helmet and backpack - Prod.jpg

The new COBRA (Compact Bailout Rebreathing Apparatus) set has been developed to provide a simple, highly reliable breathing system which will offer a diver up to 45 minutes of fully independent breathing gas to return to the safety of the bell in the event of an emergency.

Easy to operate and maintain, the set is completely mechanical and relies on no complex electronics for its operation. Like all Divex breathing systems the equipment is robust and reliable and has a very low work of breathing. COBRA is designed with the intent that the diver should be allowed to focus on his task in hand, knowing the life support is always there if required.

For the past twenty years, Divex has produced the SLS (Secondary Life Support) rebreather bailout system for commercial divers. The system has been adopted worldwide, providing divers with the assurance that in the event that primary umbilical gas is lost, he is able to switch to a fully independent breathing system which offers greatly extended duration over a "conventional" SCUBA - type open circuit bailout cylinder. There is now a recognition that an extended bailout breathing facility should be available to all divers, not only to those operating at depths greater than 200m, but also in the depths more common in the world’s oilfields - typically 50-200 msw.

Extended excursion umbilicals from bigger diving bells now mean that divers can be working some distance from the bell. The combination of cold water, darkness, subsea structures and a diver’s understandable alarm and disorientation can all contribute to delays in a successful return, not to mention other factors such as DP failure.

The Norwegian sector of the North Sea recognises this as a significant risk, and stipulates that a diver must have a minimum of 10 minutes of emergency breathing gas, calculated at a breathing rate of 62.5l/min. This renders the SCUBA approach non-conforming at depths greater than 56 metres. The same, or greater capacity, for divers should be available globally.

Following significant diver feedback on the existing SLS, the new COBRA set has the following advantages:

  • The existing SLS has a "parachute" operation, while the COBRA can be mechanically switched on and off by the diver as a pre-dive check.

  • The COBRA counterlungs are completely encapsulated on the diver’s back.

  • The COBRA uses as easy fill scrubber system for fast, simple change out of sodalime.

  • Increased positive pressure feed to allow more rapid descent.

  • Smaller than existing SLS Mk4 backpack.

  • Composite or steel twin cylinders easily accessible for charging.

  • Single turn activation and no counterlung "ripcord".

  • Safety indicator "rotowink" provides additional assurance of system positive pressure and hence integrity.

  • The only commercial emergency rebreather system in the world to have been granted CE Marking status to NORSOK U101 (Diving Respiratory Equipment) and EN14143 (Self Contained Rebreathing Apparatus).

 

 

Item Order code
COBRA 2.0 LITRE 300 BAR COMPOSITE CYLINDERS BACKPACK DB5002040
COBRA 3.0 LITRE 232 BAR STEEL CYLINDERS BACK PACK DB5002041
HELMET, COBRA, 17C, C/W INTERFACE & ULTRAJEWEL 601 DB500HA
HELMET, COBRA, 17C, VARIANT 1 DB500HZ

 

 

COBRA (Compact Bailout Rebreathing Apparatus) is a unique bailout system combining significant safety advancements while remaining easy to operate and maintain.

Courses ran from the JFD facility in Aberdeen benefit from access to an indoor training tank and custom built lecture facilities however courses can be scheduled anywhere in the world.

COBRA familiarisation course duration: 1 day

COBRA maintenance course duration: 2 days

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