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Got bad buoyancy? Who cares?!

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By: John Bentley

Ask technical instructors what skill you need to go from recreational diving to technical diving and the common answer is “hover.” It doesn’t matter how much you spend on your new harness or rebreather, if you can’t maintain a stop or stay off the bottom then your introductory technical courses won’t be successful.

Part of your instructor’s job in the course to teach

Now, with that said, it’s part of your instructor’s job in the course to teach and not just evaluate but course prerequisites do expect a certain level of skills. For Intro to Tech or TDI Sidemount you’re learning new equipment and, no matter your skill set entering the course, your buoyancy will take a step back. Part of those courses is an introduction to the equipment in a controlled environment, to work out comfort and trim characteristics, then moving back to open water to dial buoyancy down to a predictable science.

At higher level courses the instructor may expect you to enter the course with certain abilities, such as hovering in full equipment +-1ft. That implies you have learned that skill during a previous course or through previous experience and should start the course with that previous skill set in place. This will be clearly communicated by the instructor before the course and should be demonstrated on the first dive.

Buoyancy control has to be controlled and predictable, in any situation

Regardless of whether it’s an evaluation aspect of a course or a taught aspect: buoyancy control has to be controlled and predictable, in any situation. Buoyancy control shouldn’t be done until it works. It should be practiced until it can’t be done wrong. At the technical level, the diver needs to be able to hold position no matter what. Mask strap breaks and gets lost? Don’t change depth when you deploy your backup. Catastrophic gas loss? Do those valve drills without changing depth.

Buoyancy should be innate, at any level of diving

Maybe for certain commercial purposes, negative buoyancy is preferable but that’s the exception, not the norm. Expert buoyancy control isn’t exclusive to diving in doubles or a rebreather in a cave. This is a scuba skill, not a specialized super-secret-technical diver skill. It becomes directly disastrous to the diver’s health when diving in overhead and decompression environments.

Diving can and does have disastrous effects on the environment

Our coral reefs are in enough danger: we don’t need fins and boots furthering that problem. Even taking the environment out of the picture having a steady position in the water column is objectively easier for locomotion, buddy awareness, not crashing into things and enjoyment. It’s not easy to enjoy the awesome seahorse if you’re bouncing up and down or scaring it off by crashing into its habitat.

So that brings us to trim

You can’t talk about fried liver without talking about onions, which is… kind of analogous to this. Trim is one part skill, one part equipment. Yes, you can twist and turn your body to get trim in pretty much any gear but subconscious trim is only achievable in gear that’s fine tuned to the individual diver. Being horizontal gives you the least drag and provides for the easiest locomotion. Proper trim keeps your fins from contact with the bottom, even when inching in for tight macro shots of sea life. Trim is often touted as too hard for everyone and not useful outside of caves. That’s an antiquated excuse from a time period when gear balancing was impossible and diving was about being a big strong macho man. Trim is easy, balanced gear is accessible and buoyancy control can be taught early and effectively.

Who cares about buoyancy? Everyone! Buoyancy control is a dive skill, not exclusive to any particular class.

To find out more about International Training, visit www.tdisdi.com.

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From its humble beginning in 1994 to today, the group of training agencies Scuba Diving International (SDI), Technical Diving International (TDI), and Emergency Response Diving International (ERDI) form one of the largest diving certification agencies in the World – International Training. With 24 Regional Offices servicing more than 100 countries, the company today far exceeds the original vision the founders had when they conceived the idea on a napkin, sitting at a kitchen table in the early 1990’s.

Dive Training Blogs

Deptherapy returns to its Roots – Part 6

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Join Richard Cullen from Deptherapy for part 6 of his Blog about the charity’s recent expedition to Roots Red Sea, El Quseir, Egypt.

Thursday has dawned and it is down to the House Reef with an outgoing tide that is approaching slack so we can get in the water straight away.   Lots of chat about last night’s RAID O2 Provider session with Moudi.  Oatsie is talking about sidemounts and marine biology, Swars is looking forward to his first sidemount session this afternoon.

Moudi is supported by Oatsie this morning and doing some more skill work with Keiron.

Moudi running the guys through the RAID O2 Administrator Course

Corey was asking last night about what it is like at 30 metres, so I have decided that with Michael and Swars we will take him to 30 metres.  We are going to run a narcosis exercise so out comes the slate with the numbers 1 – 25 randomly placed in squares.  Corey’s task, in the dive centre, is as quickly as possible to touch each number in sequence.  He does it pretty quickly and Michael briefs him that he will need to do the same exercise at 30 metres.

Michael briefs the dive and we set off down the beach.  Corey has improved beyond measure and he is becoming a pleasure to dive with.  So we are off to follow the South reef to 30 metres where we will complete the second part of the exercise.

At 30 metres Michael hands Corey the slate; there is a considerable difference in the time to complete the exercise at the surface and at 30 metres.  There are lots of mitigating factors in how quickly you can identify the numbers and explaining a slower time at 30 metres than at the surface does not mean an individual is suffering from narcosis.  Identifying random numbers, if you run the exercise at the surface, several times with an individual over a number of hours can result in wide variations in the time taken to complete the exercise.

We finish the dive with Corey smiling from ear to ear and we have a discussion about depth and air consumption.  The second dive of the morning is a fun dive, then it is lunch in the beach restaurant.  After the burgers I am sure we will need to look at our weighting before the afternoon’s dive.

We will need to look at weighting after this lunch!

Corey and Keiron have got into the habit of recording their dives online using the RAID online log book which is a tremendous facility and as the instructor I can access that data.

Moudi and Keiron are going for a fun dive as are Corey, Oatsie, Michael and myself. Swars is getting kitted up for the first experience of sidemount with Guy Henderson.

Swars getting to grips with his sidemount cylinders

People often look at the relationships that exist between the dive team and our beneficiaries and try to extrapolate a similar relationship to disabled students they might have.  Our relationships are built up over a period of time, in some cases over many years.  We also provide 24/7 support and have chat groups etc on social media; we also meet up socially when we can.  It is somewhat different than a individual coming in to a dive centre and saying ‘I want to dive’. Your relationship is likely to be the same as any other student, you will teach them, they might stay with the dive centre or like many that will go on holiday to do some diving, you might never see them again.

Our main aim is to create a family atmosphere for our programme members, one where they feel secure and they are able to discuss freely with the team and fellow beneficiaries their feelings and needs.

Few dive centres are charities, and owners might want to consider costs of running a course for someone with a disability that might take more than the standard four pool sessions etc.  You may find the number of sessions and the staffing levels have to increase.  Many dive centres, because of their size and turnover are exempt from providing accessibility.  How will this affect someone who is a wheelchair user?  Can they gain access to the dive centre, the classroom, the toilet?  What are the changing facilities, can they get wheelchair access to the pool?

Lots of things to think about.

Roots’ beautiful reef

The reef is beautiful, so much aquatic life and the corals look splendid, especially the pinnacles.

A good day’s diving, Swars has really enjoyed his sidemount.

Lovely way to relax in the evening with the Roots BBQ, a fitting end to a great day.

Last day tomorrow and our final blog!


Find out more about the work of Deptherapy and Deptherapy Education at www.deptherapy.co.uk

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Dive Training Blogs

Deptherapy returns to its Roots – Part 5

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Join Richard Cullen from Deptherapy for part 5 of his Blog about the charity’s recent expedition to Roots Red Sea, El Quseir, Egypt.

After an evening of chilling out by the pool and in the bar, we are back to the Roots House Reef this morning, with Keiron continuing his RAID Master Rescue Diver Course and enjoying Moudi’s vast experience as he learns more about advanced buoyancy skills.

Not sure where the week has gone; it’s Wednesday already.  A few different things happening today… Oatsie who has just started at Hull University on a Marine Biology Degree Course wants to complete his sidemount course and this afternoon he is out with Guy Henderson to start his learning.  Swars also wants to do the course, as he wants to get into cavern and cave diving.  Swars will start his course tomorrow afternoon and both will spend a day being taught be Steve Rattle on Friday. Hopefully they will both be certified as RAID Sidmount Divers at the end of their training.

Tom putting his sidemount rig together under Guy’s watchful eye

The morning sees Swars and I working with Corey again and taking him through the remainder of skills and OW dives.  He is improving massively but we still have to work on trim and propulsion.

Keiron, unfortunately for him, has Oatsie and Michael for his diver recovery exercises; I am told there may well be an entanglement to deal with!

Conditions are perfect again as we all look forward to three great dives during the day.

90% of those we work with have mental health issues, mainly Post Traumatic Stress Disorder as a result of serving in various theatres of war.  If you read some adaptive teaching manuals, they have a task to ‘teach a student with PTSD a skill.’ Hmmmmm how is Oatsie, Swars, Michael or Keiron any different than a student who is free from any mental illness?  The answer is they are not, they are exactly the same. Do you talk to them differently, do you demonstrate skills differently?  The answer is no.

If they have a flashback or a panic attack, then you need to step back and provide whatever assistance is necessary but only if there is a risk of them hurting themselves.  All our team have to undertake and pass the two-day Mental Health First Aid (MHFA) course so we can intervene appropriately where the circumstances require it.

Do you know what a panic attack looks like?  Do you know how to respond to a panic attack?

Flashbacks most frequently occur at night time but some do experience day time flashbacks.  Flashbacks can lead to the individual feeling physically and mentally drained and can be triggered by anything that reminds them of the traumatic incident(s) they experienced.  Sometimes there might be a need for one of our medical team to be involved. Often a period of quietness, rest and possibly sleep is required.

Keiron and Corey on the House Reef

We have seen lots of our beneficiaries learn to manage their PTSD. As Chris Middleton said on a BBC programme:

“You can’t beat PTSD but you can learn to manage it.”

In addition to the scuba diving, Deptherapy also provides 24/7 support for our beneficiaries.  Beneficiaries are encouraged to attend the MHFA course with their partner, parent, relative or friend.

Many will have read comments from our beneficiaries, that once they put their heads under the water their demons disappear.  There are several factors to this: the peace, the quiet and the tranquillity that occurs underwater, the beauty of the corals and the amazing aquatic life.

Roots is very much like a retreat for us, we are miles away from any towns, there are no distractions, the nearest town is El Quseir, which is orthodox Muslim so there is no alcohol on sale.  The recent bypass of the main Safaga to El Quesir/Marsa Alam road means that at night time there is no noise, just a brilliant star lit sky.

Roots at night from the beach

Beneficiaries are encouraged to talk openly with the team and their fellow beneficiaries about their injuries/illnesses and provide overwhelming support for each other as Corey found on this trip.

Our aim is to create a family atmosphere and Roots very much contributes to the sense of family and wellbeing.

Sadly, we live in a world where those with mental illnesses are largely discriminated against.  Because few understand mental health, they are fearful of it and try to ignore it.  Please look at the Mind website or even better sign up to a Mental Health First Aid Course.  If you run a business then run the course for your staff, the benefits will be massive.

Back to the diving, Michael and Tom under Moudi’s close supervision gave Keiron some very challenging diver recovery exercises.  Poor Keiron, but he responded tremendously.

Swars, is working well with Corey, ensuring horizontal trim and making sure he uses effective arm strokes for his swimming. We are organising an SMB session, so he can work with different types of SMBs.

Although we haven’t told him, he has finished all his skills but we still have work to do on his trim and propulsion.  We want him to go beyond standards, we want him to be a very competent diver, who despite his devastating injuries, can self-rescue and support a buddy if in need.

The afternoon dive sees Michael joining myself and Swars with Corey.  This dive is about buoyancy, trim and propulsion.  Keiron is doing some more advanced buoyancy work with Moudi.

All roads lead to Roots, is this the future of Google maps?

Oatsie had a great dive with Guy using sidemounts and is looking forward to completing the sidemount course with Swars and Steve Rattle on Friday.

In the evening, and before dinner, Moudi runs the RAID O2 Administrator Course for all five beneficiaries. It is a qualifying part of Keiron’s RAID Master Rescue Diver course but we decided it would benefit all of the guys.

Tomorrow we have decided to take Corey to 30 metres and for him to complete a narcosis test. Join us back here tomorrow to find out how we get on…


Find out more about the work of Deptherapy and Deptherapy Education at www.deptherapy.co.uk

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