A letter has just been published that provides further clarification on Joint Service Adventurous Training (JSAT) policy for the use of Commercial MoD Approved Centres (Com MACs). This is an update to the one issued in Sep 18 which should now be destroyed.
The letter also provides the most up to date list of which centres have been approved and the courses that they are able to deliver.
The table below contains a sanitised version (no names or units!) of the service diving incidents that have been received by JSSADC in 2019.
A trainee diver experienced difficulty equalizing their ears whilst conducting OO1. The dive was aborted and the diver sent for medical examination. Subsequently they were diagnosed with inflammed ear drums and removed from diving for 10 days.
A trainee diver experienced difficulty equalizing their ears whilst conducting OS3 in a SWTA. The dive was aborted and the diver sent for medical examination. Subsequently they were cleared to continue diving
A trainee CCR diver had descended to 13m, had switched to high set point and was in the process of conducting a linearity check. At this point the handset went into error, flicked between PO2 readings and went dead. The diver bailed out onto a 7 litre cylinder and recovered to the surface using their backup computer.
During a CCR air diluent course, a trainee failed to hold a safety stop at 6m and gradually drifted to the surface. On arrival at the surface they were recovered to the boat.
Whilst conducting training lifts on OO2, a trainee found they could only clear their ears by descending very slowly. This meant that it was not possible to complete all lifts during the table limits for the dive.
The trainee was taken to a doctor who was unable to find any problems but advised them not to dive the following day.
An Ocean Diver trainee was unable to clear their ears after a CBL during OO3. The dive was aborted and the diver taken to a doctor who diagnosed slight redness of the ears and a possibility of a minor barotrauma. The trainee was unable to complete the course.
An instructor on an Ocean Diver entered the water via a stride entry at which point their pony regulator started to freeflow. The instructor was able to turn it off and then back on again which stopped the freeflow.
With approx 100bar left in the cylinder, the instructor elected to continue the dive to 10m. No further problems were experienced.
Following a dive to 14m for 17 mins, a diver experienced a headache after their evening meal. When they woke the next day the headache was still present so the DDMO was contacted.
The DDMO advised a visit to the local chamber where the doctor conducted recompression treatment which did not alleviate the symptoms. Subsequently a CT scan was also conducted to check for a stroke which did not identify any cause for the headache.
Subsequently the diver felt better and the headache has not returned.
Following successful completion of OS1-3 in a swimming pool, a diver was completing OS4 in a SWTA. At a depth of 2.5m they indicated that they wished to ascend and on surfacing reported that they were unable to clear their ears.
The diver attended the medical centre but no ear problems were observed.
A diver was carrying a twinset on their back when one of the shoulder clips failed. The increased weight caused the second clip to fail and the twinset fell to the floor bruising the diver's calf.
During OS4 in a SWTA, a trainee diver signalled up to his instructor. On the surface the diver explained that they felt faint and were unable to clear their ears.
The dive was aborted and the diver was subsequently found fit to continue diving by a doctor.
A diver realised that they required extra weight so placed it in the pocket of their BCD. During the dive this became dislodged and fell onto the seabed.
Although the weight was found by another diver in the group they did not try to ascertain whether it had been lost by anyone.
During the safety stop, the diver who had lost their weight was unable to control their buoyancy and slowly drifted to the surface.
During an ADP dive, a diver switched to their 50% stage regulator and immediately received a wet breathe. The diver returned to their back gas until the buddy could hand over their own stage with a 50% mixture.
The regulator was inspected by a qualified technician on surfacing but no problem could be found with it.
On surfacing a twinset diver heard an unusual noise from their wing. On investigation the wing dump valve was found to be u/s
A diver entered the water and immediately signalled to the boat that there was an issue. When they were recovered to the boat it became clear that the diver's dry suit zip had not been closed.
A CCR diver was operating from a hard boat with an unusual bench seat arrangement. In order to prevent twinsets slipping, a thin vertical angle bracket was installed on the seats.
Whilst kitting up in a swell, the CCR diver moved sufficiently that the angle is likely to have damaged the diluent cylinder. This was noticed when the diver entered the water and the dive was aborted.
During a training Alternate Source ascent, a diver's fin came off and was lost. The buddy elected to carry out a CBL on the diver without a fin and both divers surfaced without further incident.
Two divers were conducting training CBLs from 20-6m. After one successful ascent a diver was unable to equalise sufficient to allow a descent. The dive was aborted.
A pair advanced divers were refreshing their skills by conducting two CBLs from 20-6m. During the second lift, one diver was unable to dump gas from their dry suit quickly enough to prevent both reaching the surface.
Subsequent analysis showed the that the dry suit auto dump valve was not operating correctly due to damage probably caused during transit to the dive site.
During the ascent phase of a planned deco dive to 40m, two divers deployed DSMBs mid-water. At 6m one of the divers became entangled in their DSMB and slowly ascended to the surface missing 1m of stops.
The diver was placed on oxygen and the DDMO contacted. Following advice the diver was removed from oxygen and sent for a medical examination after which he was pronounced fit to conduct diving.
Expedition slots at JSSADC have now been allocated for 2019 as follows
RAF Brize Norton
RAF Brize Norton
29 Jun-01 Jul
22 ENGR REGT
RAF Brize Norton
22 ENGR REGT
159 Regt RLC
31 Aug-01 Sep
RAF Brize Norton
28 Oct-01 Nov
This means that any date not shown in the table above is now available on a first come first served basis. If you’re interested then please read JSSADC Expedition Slots 2019 and complete the bidding proforma
It’s that time of year again where we’re looking forward to another great diving season. Once again we’re hoping that service divers will continue to come and help us out by acting as either guest or rescue divers during our various courses. If you are interested, then please get in touch with Mr Graeme Crouch on 9375 54729 or [email protected]
The dates below are when we require people.
We need Sport divers and above to act as rescue divers on each Ocean Diver course that we run:
If you would like to help out and have not rescue dived with us before you would need to come in and complete some paper work on the Monday of the course and then on the Tuesday take part in some skills and drills in the pool at HMS Raleigh along with diving with a 3ltr pony as a alternate independent air source. If you cannot make either the Monday or Tuesday please let us know at the earliest opportunity as we can then look to do all this on either the Monday or Tuesday. If you have already completed the paper work and pool dive with us there is no requirement for you to come down and rescue dive until the Wednesday of the course, we look to do 5 open water dives 2 on the Wednesday, 2 on the Thursday and then a depth progression on the Friday if the weather is good (normally on HMS Scylla).
As part of the BSADS course and ESADS assessment, we need to give the students the opportunity to plan and manage diving with realistic numbers of divers. This provides a great opportunity for individuals to come along and enjoy a few days diving whilst also gaining the opportunity to see what these courses are all about.
BSADS 19-01 – 8th – 12th Apr
BSADS 19-02 – 17th – 21st Jun
BSADS 19-03 – 19th – 23rd Aug
BSADS 19-04 – 16th – 20th Sep
BSADS 19-05 – 28th Oct – 1st Nov
BSADS 19-06 – 25th – 29th Nov
In order to guest dive on these courses you need to be a minimum grade of Sports diver, have a valid service sports diving medical and have completed dives in the last 2 months to depths greater than 20m for the BSADS and 25m for the ESADS Assessment.
If you are interested then please get in touch with Mr Graeme Crouch on 9375 54729 or [email protected]
The next Joint Service Diving Safety Conference will be held on 20 Mar 2019 at HMS RALEIGH and will offer the opportunity for sub aqua divers from all 3 services to meet, share experiences and knowledge. There will be a wide range of speakers including a BSAC representative, the Superintendent of Diving, Diving Standards Officer (AT), and of course JSSADC.
There will also be the opportunity to have a Q&A session with members of the Joint Service Sub Aqua Diving Policy Advisory Committee (JSSADPAC) and a social event in the evening.
Once again we’ve laid on courses both before and after the conference:
Army Sub-Aqua Diving Adventurous Training Expeditions will now be provided with British Sub Aqua Club (BSAC) foundation level diver training materials. This is intended to help reduce the costs incurred by expeditions.
The main entrance to Devonport Naval Base (aka Camels Head Gate) will be closed from 13 Jul 18 for approximately 9 months. This will allow improvements to security and safety to be completed but will have a significant impact on those attempting to gain entry to the base, including JSSADC.
All visitors to JSSADC should familiarise themselves with Naval Base Commander’s Memorandum (NBCM) No 61/18 to ensure minimal disruption. A copy of this can be acquired by contacting JSSADC Cse Clerk. Appropriate extracts will also be included in Joining Instructions for students and guest divers.