Greg Holland Jewellery Diamond Deep 2013

Breath-hold diving. Tips and advice.

Re: Greg Holland Jewellery Diamond Deep 2013

Postby Phantom Menace » Sat Nov 09, 2013 5:25 pm

After reading a link on equalising techniques forwarded by Mullins I got contacted by one of the club members to see if I wanted to do another lake session this morning.

8am at Lake Pupuke saw us swimming out through the kayakers and rowers with the buoy. Dropped the baseplate to 20m and did some warmups then played with 10m exhale dives to experiment with equalising on low lung and cheek volume (simulating deeper EQ).

Finished with a 36m dive and the equalising was not perfect but way better than before.

Net result: new PB of 36m and possibly some progress on deep equalising.
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Re: Greg Holland Jewellery Diamond Deep 2013

Postby Phantom Menace » Tue Nov 12, 2013 7:30 am

Phil (AIDA NZ president and one of the founders of the AFC) offered a session on equalising last night. While it was pitched as "Equalising 101" it was a very informative session and I learnt a bit.

Started with a "dry" discussion poolside talking through the mechanics of the outer ear, middle ear, eustachain tubes, inner ear, nasal cavity, soft palate, epiglotis, lungs etc. Next was a summary of the different equalising techniques and their pros and cons. Simplistically - Frenzell is the way to go, Valsalva sucks.

(Luckily I discovered I was using the Frenzell technique already)

Next topic was "mouthfill" and how / when to do it. Essentially you take a big gob of air from your lungs and hold it in your mouth (before you need it) for equalising. Most would probably do this round 15m. Then use your (full) cheeks to provide pressure for equalistion until you get to the point where Frenzell becomes practical again. If you master this then apparently it is possible to go deeper than most imagine (40 - 50m or even more).

After this it was time to get in the pool and split into two groups. 1st group focussed on practising Frenzell while head down (funny seeing feet hooked over the side of the pool and heads on the bottom). The guys in this group progressed really well - I think they all figured out Frenzell.

2nd group had a crack at exhale dives and practicing the technique to get a mouthfill and using cheeks to provide pressure for equalisation. This was an interesting exercise for me - I think I got there but need to try it in deeper water to really see.

Tonight Phil will be running "Equalising 201" in the lake where all of the above will be put into practice (10m - 20m dives with exhale etc. I think). I cannot make it so will have to get some of he others to give me an update later.
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Re: Greg Holland Jewellery Diamond Deep 2013

Postby Phantom Menace » Sun Nov 17, 2013 8:01 am

A family bereavement meant that I could not get to the lake at all this week (still out of town today) but others made huge progress. After a Tuesday lake session focused on deep equalizing the regular Thursday session sounds like it went really well with Moss hitting 41m and Nat hitting 44.5m - which also happened to be the bottom of the lake where they had the lines! Both of these guys had started the training with a baseline of 25m.

BTW the saftey diver plan round the likes of Nats dive was well thought out and executed with divers meeting him at various depths on his ascent etc.
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Re: Greg Holland Jewellery Diamond Deep 2013

Postby divepirate » Tue Nov 19, 2013 10:36 am

Excellent progress by the sounds of it.
Were there any of the usual Pupuke issues such as clouding and the like.

I am happy to hear about the safety precautions, it is all too easy for a sport that pushes the boundaries to be turned into a press field-day.

Well done to the organisers.
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Re: Greg Holland Jewellery Diamond Deep 2013

Postby Phantom Menace » Tue Nov 19, 2013 8:17 pm

Pupuke visibility has been variable above the thermocline but pretty clear below it. I tend not to look at my watch as I swim through the thermocline but I think it has been sitting at about 12 or 15m most of the time.
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Re: Greg Holland Jewellery Diamond Deep 2013

Postby Phantom Menace » Wed Nov 27, 2013 10:08 pm

Last Thursday I had a crack at taking a mouth fill (never tried it properly before) at about 15m and again later. It means another thing to be thinking about and is actually quite distracting. I found that I was so focussed on taking the mouth fill that I forgot to equalize as often as I should! Net result was a sore left ear as I left it a little too long.

I was booked in to see my GP on Friday morning to get the medical certificate sorted for the comp so I got her to have a look at it. Apparently it had obviously suffered some barotrauma but she could not see if it was perforated. This meant I stayed out of the water for a few days missing underwater rugby on Sunday as well as a couple of lake training sessions I had penciled in. Saw a specialist today and he said it was OK so I organized an after work lake session with 2 of us at first and then 3 once Phil made it from the airport.

First few dives were what we thought were 20m and 30m - the 30m dive felt a bit more difficult than usual. (The line has tape every 5m so we count these as we lower the base plate.) Once Phil arrived we started to drop the plate to what we thought was 35m when I noticed two numerals - 4 and 0 written on the rope next to the tape. Phil did a no-fins dive to the plate and his watch confirmed the depth as 40m so it turns out our earlier dives were 25m and 35m! This made me feel a bit better so I thought I would leave the plate at 40m and see how I went. I expected to turn early but the mouth fill and equalising technique was OK so I hit the plate for a new personal best. Damn it is dark down there.
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Re: Greg Holland Jewellery Diamond Deep 2013

Postby divepirate » Thu Nov 28, 2013 10:43 am

well done.
40m in pupuke is some feat in anyones books.
I am not envious though, after a number of dive courses in the lake it can feel a bit like a black hole.

it sounds like the course has really shown results.
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Re: Greg Holland Jewellery Diamond Deep 2013

Postby Phantom Menace » Fri Nov 29, 2013 10:16 pm

Well, the comp is on tomorrow. I wasn't able to get my deep equalising sorted last night to repeat the PB from the night before so I have nominated a depth that should be just achievable without a decent mouth fill for me (I am struggling to keep my soft palate open consistently).

Here are all the nominations:
https://docs.google.com/spreadsheet/pub?key=0AkOOrNFmoK4KdFJrNW1qUVQ4SjE0S2dSS1pIb2c2ZFE&gid=0

A few are going for the max comp depth of 50m - notably Nat who has only been doing this for 7 weeks …

It is likely that the afternoon nominations will change a little after the morning dives. If I get my equalising sorted in the morning then I might consider going a bit deeper in the afternoon.
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Re: Greg Holland Jewellery Diamond Deep 2013

Postby Ali Perkins » Fri Nov 29, 2013 11:48 pm

Good luck! Enjoying the reports.
To view the underwater photography of Alison Perkins from InspiredToDive.com - visit http://www.inspiredtodive.com
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Re: Greg Holland Jewellery Diamond Deep 2013

Postby Phantom Menace » Sat Nov 30, 2013 10:05 pm

Happy with my dives today - 36m Constant Weight with Fins and also 36m Free Immersion. Slightly conservative depths but the strategy turned out to be a good one resulting in 4th place in the comp. I was helped by some better divers having equalising and surface protocol problems so I wouldn't read too much into the placing though.

The wind made things a bit challenging but the comp ran like clockwork. The efforts by the organizers, judges and safety diver team were great with many 40m+ dives being completed.

Phil put in a great performance after a less than average buildup (traveling to and from Wellington most weeks etc.) with 50m Constant Weight With Fins (but lost the tag on the way up so 49 points) and a 46m No Fins effort.
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Re: Greg Holland Jewellery Diamond Deep 2013

Postby Phantom Menace » Mon Dec 02, 2013 8:57 am

News Talk ZB interviews Moss Burmester about the event.

http://content.radionetwork.co.nz/weekondemand/auckland/11730.mp3
http://content.radionetwork.co.nz/weekondemand/auckland/11745.mp3

The interview with Moss starts at about 12:10 in the first file and then continues for a few minutes at the start of the 2nd file.
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Re: Greg Holland Jewellery Diamond Deep 2013

Postby Phantom Menace » Wed Mar 19, 2014 11:54 pm

After doing the event I looked back on the training, club members etc. and decided I would join the club properly as I was learning stuff, enjoying it and the club has some good folks in it.

So far I have been consolidating depth at 35m or so and just getting comfortable with repeated dives. The regular Thursday depth session at Lake Pupuke only have a couple more weeks to go (until daylight saving ends and it is too dark after work) but some of us will carry on with the occasional weekend session so I might manage to push out to 40m properly and maybe even beyond that by next Christmas.

Monday night pool training has been interesting too - mostly stretching (abdominal, chest, diaphragm etc.), breathing techniques and CO2 tables but there has also been one static night - at which I managed a 4:48 breath hold to conclude the night.
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