Ocean Tek Recreational & Technical

DEMA SHOW 2019: The One New Scuba Gear Everyone Is Talking About! This is the Hydroid Aquabreather. Is it a rebreather? No. Is it SCUBA? Yes, but not as you've ever seen it before! Without a doubt, this is the one scuba div...

https://divernet.com/2018/08/09/delving-deeper-into-deep-stops/

Delving Deeper into Deep Stops DECO DIVER Delving Deeper into Deep Stops Beware anyone who tells you they know what your ‘correct’ decompression profile should be, because they almost certainly don’t, warns MARK POWELL. Here he fills us in on the latest thinking about deep stops and gradient factors IF YOU ARE AWARE of the ...

I’m Diving the U12 Sub on Sunday 23rd sept sailing from Eyemouth and there are a few places left any of my diver friends interested? This is a 50m plus dive and need to know before end of Wednesday!!

£55 If we fill the boat with 12 divers.
16:30 slack so will ropes off about 14:15 from Eyemouth harbour on charter boat Oceanic
Back on shore in Eyemouth about 19:45.

Elusive U12 found at last
The wreck of the German WWI submarine U12, which has evaded searchers for nearly 30 years, has been found off Eyemouth, in Berwickshire.

The seven-strong dive team located the wreck in 50m of water, lying bolt upright on fine sand. From what they saw, the wreck did not appear to have been visited before by divers, and there was no obvious disturbance of the site.

Defining features were the U-boats four torpedo tubes, two facing forward and two aft; six portholes set into the conning tower; and damage to the port side of the hull, consistent with accounts of the subs sinking in 1915.

U12 was sent to the bottom in an action with three British destroyers, HMS Ariel, HMS Acheron and HMS Attack. During the engagement, the U-boat was rammed by Ariel.

Of U12s crew of 29, ten were able to escape through two deck hatches. The others, including the commander, Hans Kratzch, went down with the vessel, unable to exit through the jammed conning tower hatch.

In 1984, American wrecks historian Clive Cussler claimed to have found U12, but his find turned out not even to be a submarine. Twenty-four years on, the U-boat was found a good 20 miles from Cusslers position, while Admiralty charting for the wreck also turned out to be inaccurate.

Ocean Tek Recreational & Technical updated their phone number.

EFR course on Sat 8th sept £100 inc cert and manual contact us ASAP to book on 😊👍

Summer special !🌞 PADI deep specialty & PADI’s enriched Air speciality both for £240 !! Offer ends soon 😬 get booked on to secure a place !!

Massive well done to Leanne Morris on completing a TEC try dive today , TEC 40 course coming up 😊👍

Jamie & his friend enjoying there first steps into the scuba diving world 😊👍💦

Well done to Scott today on completing his PADI openwater course today !🎉👍 many adventures to come😊

Congratulations to katriona on passing her PADI openwater course today start of many adventures 😊👍

NDAC WEEKEND 😊👍 Saturday 27th Oct booked for 8 people in luxury log cabins on site for one night cost £59 per person plus entrance fees ! Answer quick to reserve a place ! There’s only 8! 😊👍£59 non refundable required on confirmation , will be a cracking weekend for recreational and some technical Diving 🤪🎉 phone or message Darren on 07774498038

NDAC WEEKEND 😊👍 Saturday 27th Oct booked for 8 people in luxury log cabins on site for one night cost £59 per person plus entrance fees ! Answer quick to reserve a place ! There’s only 8! 😊👍£59 non refundable required on confirmation , will be a cracking weekend for recreational and some technical Diving 🤪🎉

https://youtu.be/DonIgQohno4

HMS Southwold 2017 4k GoPro Hero 4 Black 4k 25fps Iqsub 150m Housing HMS Southwold was a Type II British Hunt-class destroyer built for the Royal Navy during World War II. She ser...

Dive on the HMS stubborn off Malta !

Jake & Josh completed there openwater course last weekend 😊👍

www.shearwater.com

Another cracking Dive from the Tec week !!!

https://www.facebook.com/conor.crozier1/posts/10210919599239000

Le Polynesian (Stern) Footage from Durham City Scuba's Tec week diving out of Maltaqua and Galaxy Charters Malta (Gopro hero 4 black: 4k 25fps, iqsub 150m housing) Polynesian SS w...

Another top dive on the HMS stubborn! Thks to Conor Crozier for the footage 😊👍

https://www.facebook.com/conor.crozier1/posts/10210993904936596

HMS Stubborn (P238) 2017 4k GoPro Hero 4 Black 4k 25fps Iqsub 150m Housing HMS Stubborn was an S-class submarine of the Royal Navy, and part of the Third Group built of that class. Stub...

Recent Dive on our Tec week in malta ! Thanks to Conor Crozier for the footage 😊👍

https://www.facebook.com/conor.crozier1/posts/10210992167573163

HMS Southwold 2017 4k GoPro Hero 4 Black 4k 25fps Iqsub 150m Housing HMS Southwold was a Type II British Hunt-class destroyer built for the Royal Navy during World War II. She ser...

Excellent week diving in malta out off stay tuned we have it on good authority that lots & lots of deep wreck location will be released soon 😊👍!

Does Diving Damage the Brain?
by divers alert network

It is well known that compressed gas diving may result in acute decompression sickness and cause permanent injury to the brain and spinal cord. However, the risk of possible injury to the brain in the absence of acute decompression illness is less clear. Because of the controversy over the subject, and the lack of definitive evidence, DAN recently enlisted the help of a group of industry respected experts to provide their insight into the subject and published the results in Alert Diver (1).

The agents of neurologic decompression injuries are gas bubbles (emboli) that occur in tissue, travel with venous blood and may pass from venous circulation into the arterial system. Detectable venous gas emboli are often present after a dive, but they are usually removed through pulmonary capillary filtration. When the emboli pass to the arterial side, they may block arterial flow, causing tissue hypoxia in watershed areas and sometimes damage. The risk of arterialization increases in divers with a large PFO, but it can also occur through pulmonary arteriovenous shunts when there is high load of VGE. For decades this has been raising concern that brain injuries in divers may be more prevalent than previously thought and could potentially occur without a manifestation of acute decompression illness.

bubblesA recent paper published by our colleagues Balestra and Germonpre (2) seems to provide a quite clear answer to the question. The two researchers recruited 200 recreational divers who had never had DCS, and then randomly selected from among them 50 divers for further studies. In addition, they maintained a control group of subjects who had never been diving, and another control group of subjects who had been exposed to neurotoxic solvents. The aim of the study was to establish whether divers have more asymptomatic brain injuries than non-divers, review how divers perform on psychometric tests in comparison to non-divers, and research the possible effect of the presence of a PFO.

Balestra and Germonpre(2) used magnetic resonance imaging (MRI) to evaluate subjects for signs of asymptomatic brain injuries (unidentified bright objects – UBOs), performed echocardiographic tests for PFOs, and gave the subjects a battery of four neuro-psychometric tests. Divers who did not complete all studies were excluded, but 42 of the initial 50 remained in the study.

A significant PFO was detected in 38% of divers. UBOs were detected in 5 (12%) divers. Importantly, there was no correlation between the presence of a PFO and the ending or extent of UBO’s. That is the good news: diving without acute decompression illness does not cause UBOs, which were of concern to many divers and researchers.

Neuro-psychometric testing, however, produced inferior results for divers in two tests in comparison to non-divers, and similar results in comparison to the group exposed to neurotoxic solvents. On two other tests, divers did significantly better than the solvent group. This was not correlated with the presence of PFO. In summary, it appears that divers with five or more years of experience and at least 200 dives, have decreased short term memory and visual-motor performance, which could be a bad news if further studies confirm it.

Another interesting point from this study is that the prevalence of PFOs among study subjects was higher than in general population. The authors hypothesize that this may be due to strenuous intra-thoracic pressure changing activities, such as those encountered in diving, which may “open-up” previously sealed or microscopically small PFO. However, there are many other everyday life situations that raise intrathoracic pressure in similar manner as some dive maneuvers. In our opinion, this finding is of concern when discussing the prevalence of PFO in DCS case series. Even divers without a history of DCS may have greater prevalence of PFO than the general population.

This paper is worth reading and is available for free online at:http://journal.frontiersin.org/article/10.3389/fpsyg.2016.00696/full

Willey J. Effects of diving on brain. Alertdiveronline. http://www.alertdiver.com/Brain
Balestra C and Germonpré P (2016) Correlation between Patent Foramen Ovale, Cerebral “Lesions” and Neuropsychometric Testing in Experienced Sports Divers: Does Diving Damage the Brain? Front. Psychol.

AlertDiver.com | Effects of Diving on the Brain http://www.alertdiver.com/Brain

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A few pics from our trimix dive on the HMS Stubborn in malta 😊👍