FOR CHRISTMAS! BUY A SUUNTO AIR INTEGRATED DIVE COMPUTER, GET A TRANSMITTER FOR FREE.

FOR CHRISTMAS!

FOR CHRISTMAS!

Treat yourself to a brand new Suunto DX, D9tx, D6i, D4i, Vyper Air, or HelO2 and get a WIRELESS TANK PRESSURE TRANSMITTER for free.  

Offer valid from Nov 1st until Dec 31st 2013, as long as the stock lasts. The offer is valid for the current products only, excluding the 2014 collection.

NO HOSE, NO HASSLE. The Suunto Wireless tank pressure transmitter gives you current tank pressure and remaining air time with just a glance at your wrist. Before your dive, simply pair the transmitter with your dive computer and you’re good to go. The transmitter’s handy green LED light lets you know that it’s on and sending data.

Offer not valid in Japan, Philippines, Latvia, Ukraine, Maldives and United Arab Emirates.

Free Christmas Present :0)

Dive Show Special!

Come and spend £150 or more with DiveStyle over the Dive Show week and we will give you a fantastic TANK H20 water bottle absolutely free!

The amazing Tank H20 water bottle! Show everyone you are a scuba diver.

The amazing Tank H20 water bottle!
Show everyone you are a scuba diver.

So not only will you save on fuel, entry cost, the outrageous cost of food and parking but you will get an amazing must have for any scuba diver.

Offer ends 31st November 2013.

 

Ever Wanted A Water Bottle That Screams SCUBA?

We have scoured the land and sea to find unique gifts just for you and we believe that the TANKH2O water bottle is one of the best fun SCUBA products we have found for a long time.

Show your love of SCUBA with the TANKO2 water bottle

Show your love of SCUBA with the TANKH2O water bottle

TankH2Os are stainless steel water bottles for scuba divers and ocean adventurers. They’re food-grade stainless steel and 100% BPA free.

TankH2Os are Responsibly Made:
– 100% BPA-free materials
– Food-grade stainless steel (18/8 Steel)
– BPA-free #5 polypropylene

We have limited stocks so dont hang around!

Please Note: Free Water bottle with Silver courses Ends 31st October 2013

Oceanic Professional Program – Up To 30%

Oceanic Professional Discount

You’re a professional diver, and you depend on your equipment when teaching, guiding or working.

Oceanic and Hollis recognises the commitment and effort you make towards the industry and wants to reward you with discounted equipment.

You can select from a wide range of products from Oceanic & Hollis, including regulators, bcds, wings, sidemount and drysuits. You can select multiple items across different groups. We’ll even give you free service parts for life and register your product for you.

How does it work?

1. Download the application form below

2. Select which products you want; one from each category, complete your details

3. Send us the form and we’ll ship your product to your choosen Oceanic dealer.

4. Visit your local Oceanic dealer, pay for your product and collect them.

The Professional application form is available for download from here.

Remember: this promotion runs for the duration of 2013 and is open to all renewed Professionals in the UK industry, including Divemaster / Dive Leader and above. Full details of the process are available in the application form above.

FREE Oceanic Transmitter!!

Throughout June, July and August 2013 Oceanic are giving away free transmitters with all wireless air integrated computers in their range. This includes the OC1, new OCi (3 gas, 3 transmitter system), Atom 3 and VT4 (4 gas 4 transmitter) systems.

Get your free transmitter worth £250.00!

Get your free transmitter worth £250.00!

Get Fit For Scuba, Are You Serious? Why?

After about 30 years of age, life gives each of us an important choice: use it or lose it.

Those of us who choose to “use it” can maintain or even increase our fitness levels for decades.  The rest of us fail to provide our bodies with enough activity to stave off the debilitating influence of Father Time.

For example:

• Our fitness potential peaks in our mid-30s, then gradually declines until we have no need for it, at the point when you get a free wooden overcoat :0)

• The average person gains about 1 kilo per decade starting at age 20 if no exercise is taken.

As we live with our body’s every minute of every day you don’t really see how significantly your body changes, until one day we wake up and suddenly realize that the ‘pot belly’ has grown to a state that you find it difficult to pull up your socks!

Does this mean that diving becomes automatically riskier as we age?  No.

Scuba diving is usually described as a moderate level activity. Scuba diving by itself does not lend itself to the maintenance of physical fitness.

In most cases scuba diving is a seasonal sport and as such our ‘scuba fitness’ follows suit. Every year I hear people saying after their first dive of the season “I really need to get scuba fit”.

For those divers who already pursue a program of physical fitness, well done!

To keep a year long fitness regime is not easy. In the summer you want to enjoy the sun and getting fit is not that attractive. In the winter the weather is miserable and does not provide you much incentive the ‘get out’ and ‘get fit’.

In both cases the draw of easy food in the form of fast food, comfort food, pub grub and drinks with friends can just be too much of a temptation. Especially with the high stress lifestyles that people lead these days.

Life also often throws a spanner in the works here and there. I certainly feel the aches and pains more these days now that I am over 40!

Over the last decade since I stepped over the 30 years of age mark I have been keeping fit on and off. I have seasons where for whatever reason I train like a madman to the tune of ‘Eye of The Tiger’ blaring in the background.

I have tried all sorts of keeping fit. From boot camps, joining a gym, running, yoga, squash, Zumba and many more.

They all have one thing in common for me, they get boring, repetitive and I loose interest at some point. That was until I found Crossfit!

Since joining the brand new Crossfit gym in Maidenhead (http://www.crossfitmaidenhead.com/index.php) I found a new lease of life and a place that provides the same atmosphere as diving, a group of friendly people that get together, have a great time and get fit as a result.

The crossfit instructors are there at each session to make sure you are ‘working at your best’ and the other crossfitters help to keep each other going.

Why Fitness?

I believe it is important for divers to have a ‘good’ level of fitness. Becoming physically fit, will in turn can help to prevent illness, injury and just improve general well being.

For me, being physically fit provides me with benefits such as:

  • Improved transportation of oxygen to muscles
  • Helps reduces the amount of air used
  • This in turn would help extends dive time
  • Increased physical endurance helps reduce fatigue
  • Reduces the risk of decompression sickness (DCS)
  • Improves agility
  • Improves comfort and movement on the surface and underwater
  • Improves muscle efficiency and diving performance
  • Helps you to maintain a healthy weight range

Gas Exchange

VO2max is the most relied upon benchmark of both cardiovascular fitness and effective decompression.  While the average person experiences a 10% decline in VO2max per decade, recent studies suggest that maintaining high activity levels can halt this decline entirely.

Heart stroke volume decreases with age, along with a decrease in the capillary-to-muscle fibre ratio and arterial cross-sectional area.  This means that less blood is flowing to the peripheral tissues (fewer capillaries), and the speed with which gasses cross into the bloodstream is reduced (which is a function of vessel cross-sectional area).  Thus, tissue off-gassing is slowed, and oxygen is less effective at accelerating the decompression process.

That said, an active 65 year old has a higher level of cardiovascular function than a sedentary 30 year old.  This difference can come from pursuing 30 minutes of focused exercise every day- hardly the schedule of an elite athlete. 

Muscle and Bone

Absolute muscle remodelling rates slow down with age.  However, even 90 year olds experience the same relative increases in strength and endurance as younger adults.  One study showed that men in their 70s who strength trained starting in their 50s had muscle size and strength equivalent to the 28 year-old researchers.

Training to achieve maximum peak bone mass when younger may reduce the effects of age and inactivity later.  This is known as the “bone battery” concept.  In other words, the higher the maximum bone density you achieve, the longer it will take for aging to lower that density below a safe threshold.  This is regardless of genetic predisposition to degenerative diseases like osteoporosis.

Flexibility often decreases with age but can be improved with stretching.  Again, the percentage gains achieved from a consistent stretching program remain the same across age groups.

Well I hear you say, that is great had I know all of this at the time!

It’s Never Too Late To Consider Your Fitness, You Only Get One Chance As Life Is Not A Rehearsal!

There is no age at which exercise is bad for you, whether you’re just getting started or have been doing it your whole life.  There are no exercises that are unsafe based purely on age, either.  A 70 year old can follow the same program as a 30 year old with adjusted baseline parameters, correct coaching and advice.

Everyone should discuss with a suitably trained individual about their exercise programs, though even with significant health issues like diabetes, high blood pressure, coronary artery disease, etc., almost anyone can safely increase their activity with proper guidance.

If you do have a known condition then please don’t just jump in at the deep end and go and seek the advice of a physician.

 

 

 

 

 

Gas Analysers – How Important?

Probably nothing is more important to divers than their breathing gas. Whether they use compressed air, nitrox or some exotic mix, having sufficient breathing gas ranks high on divers’ predive checklists. But just as important as the quantity of gas is its quality. While breathing gas contamination is considered rare in recreational diving, it does happen. Even trace amounts of contamination can lead to incapacitation, unconsciousness or even death.

Contamination of breathing gas takes a variety of forms and can be caused by a wide spectrum of conditions. The most common cause of breathing gas contamination involves the compressor system. In other cases, contamination can occur right in a diver’s cylinder. Improper gas mixtures can also be considered a form of contamination.

While there are quality standards compressed breathing gases must meet, divers should still take responsibility for ensuring the quality of their own gas. Happily, there are several options available to divers when it comes to analyzing gas mixtures.

The Sniff Test

Perhaps the simplest technique of air quality analysis is the “sniff test,” wherein the diver opens the valve and smells the escaping gas to detect suspicious odors. This crude test is effective to the extent that gross contamination in the form of oil, diesel fumes and other combustion products can sometimes be detected by odor and/or taste. However, since carbon monoxide (CO) is both colorless and odorless, breathing gas can pass the sniff test and still be contaminated by CO. A more accurate solution to analyzing is the use of a portable sensor.

CO Detectors

Color-change sensors are often used for measuring CO levels and include both qualitative and quantitative devices. Qualitative devices use a color-change element that gives divers a go/no-go indication. Be aware, though, the color change indicates only that the air sample exceeded acceptable contamination limits; it doesn’t indicate by how much. Quantitative color-change sensors use a small pump to draw a measured quantity of air (usually 50 cc’s) through a calibrated color-change tube. The CO in the air sample reacts chemically with the sensor material in the tube, causing it to change color. A scale on the side of the tube measures how much chemical has changed color and reports the actual concentration of CO.

Electronic CO-monitoring devices subdivide into two categories: metal-oxide detectors and electrolytic detectors. Metal-oxide detectors utilize sensors containing, not surprisingly, metal oxide. In the presence of CO, the metal oxide gives up its oxygen, changing to a pure metal and generating heat in the process. The amount of temperature change can be correlated to the CO level in the sample, and the result is displayed by the device.

Electrolytic CO detectors work like tiny batteries, with platinum electrodes dipped in an electrolyte. The presence of CO increases the generation of electrical energy, which can be correlated to the concentration of CO. These are perhaps the most sensitive and accurate types of CO sensors, but they are also more expensive and use more power to operate.
When choosing a CO monitor, give careful thought not only to price, but also to the type of diving you enjoy and the logistics of taking the measurements.

The growing popularity of nitrox has undoubtedly done a lot to improve the state of oxygen-monitoring technology for divers. Though the gas analyzers commonly seen in dive shops and on dive boats are often called “nitrox analyzers,” it’s equally accurate to call them “oxygen sensors,” as what these tools are really monitoring is the level of oxygen in a given nitrox gas mixture. Probably the most common type of oxygen sensor uses a galvanic fuel cell that generates a weak electrical current proportional to the concentration of oxygen. Although monitors using this technology can usually measure oxygen content to within a 0.1 percent margin of error, they can be fooled. The monitor may provide a reading in “percent oxygen,” but it is actually measuring the partial pressure of oxygen. Change the pressure, and the oxygen reading changes, too.

A simple to use accurate oxygen analyser is essential in these modern times.

A simple to use accurate oxygen analyser is essential in these modern times.

Changes in temperature will also affect the rate of the chemical reaction in the fuel cell and, consequently, the reading of the monitor. While nitrox analyzers typically have temperature-compensation circuitry, problems can arise when a cold monitor is suddenly taken into warm conditions or vice versa. Always allow your nitrox analyzer to reach ambient temperature and calibrate the monitor to a known standard, typically compressed air at 21 percent, before putting it into action.

Yet another problem that divers should be aware of is poor sampling technique. If the monitor is not properly used to make sure it is reading only the gas coming from the cylinder, it might be measuring a diluted mixture of ambient gas as well as the gas coming from the nitrox cylinder. Always read and follow the manufacturer’s instructions to ensure you’re getting accurate results.

Maintenance Matters

Taking proper care of your gas-analyzing equipment is of critical importance. Always store your analyzers in a cool, dry place. Avoid rough handling and exposure to seawater and other wet conditions. Analyzers usually require a power source, so make certain yours is fresh. When on the road, spare batteries can be a lifesaver. Remember that many sensors have a limited life, so track the time and use of your analyzer, and carry a spare when traveling. Of course, dive operations and liveaboards that offer nitrox will have their own sensors. Whether you choose to use your personal nitrox analyzer or use those on location, understanding the concept and the proper use of gas analyzers will help to make you a safer diver.

Bad gas is not a likely hazard for recreational divers, but the consequences of undetected contamination can be a serious matter. By using portable gas analyzers, divers can limit the risk and enjoy a greater level of safety while diving.

Know the Symptoms

NOTE: If you experience any symptom associated with gas contamination, abort the dive and exit the water. 

General contamination: Contamination of breathing gas can come in a variety of forms. Some of the most common symptoms are an oily taste, oily smell or other foul odor.

Carbon monoxide poisoning: The most common symptoms of CO poisoning are headache, dizziness, weakness, nausea, vomiting, chest pain and confusion. High levels of CO in the breathing gas can cause loss of consciousness and death. Unless suspected, CO poisoning can be difficult to diagnose because the symptoms are common to a larger spectrum of maladies.

Oxygen toxicity: The most common symptoms of central nervous system (CNS) oxygen toxicity include tremors, ringing of the ears, nausea, tunnel vision and seizures.

 

Information talen from Alert Divers Online