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.
They can be used to signal the need for a boat pick up, as a distress signal, a marker of a location (maybe of that sunken treasure you found?), or to indicate the need for additional air on long decompression stops.
Basically, they are tubular buoys made out of PVC or similar materials, and attached to a line reel or spool. They are typically orange, red, or yellow, sometimes with various colors used to communicate various messages.
DSMB’s come in many different forms.
At many dive spots you’ll see them vary in colors and manly be used to signal for passing boats, before divers accent.
It’s one of those safety items commonly used, and often required, during boat or drift dives, where they are used to signal a diver’s or dive team’s position as they surface, and are typically launched during the safety stop.
Launching one can be a bit tricky, though, as they influence your buoyancy, but also due to the risk of getting tangled up in the line and getting pulled to the surface by the DSMB. This guide will teach you the basic steps to launching a DSMB safely.
SETUP OF A DSMB
First things first, setting up your DSMB.
Here you have to main options.
Attach your DSMB to a spool.
Attach your DSMB to a reel.
Using a spool or a reel both have pro’s and cons:
The spool is lighter and smaller, meaning the whole setup takes up less space in your configuration. Second, a line reel will have some form of locking mechanism that can potentially jam, sending you the surface if it jams as you launch the DSMB.
The reel provides a more stable platform to launch your DSMB, it is easier to wind as you make your ascent but does require a lot more space to store. As above most reels have some form of locking mechanism which is great for stops but can, in some cases catch as you deploy the DSMB if you are not paying attention.
DEPLOYMENT DURING SCUBA DIVING
When it comes time to launch it, here’s a step-by-step guide:
As DSMB’s are often launched during safety stops, that means you most likely need to launch it mid-water, so make sure your buoyancy skills are up to spec. When it’s time to launch, find your perfect hover point, and expel a small amount of air making yourself just a tad negative in the water.
Take out the DSMB and unpack it, taking care not to drop the reel. As it has no lock it will run out its full length of line before stopping, which will be a mess to coil up again once you’re out of the water.
Holding the DSMB and line spool / reel in your left hand, use your right hand to pull open the bottom of the DSMB.
Tilt your head slight, bringing one of your regulator exhaust valves close to the opening of the DSMB, taking care not to get the line entangled with your regulator or regulator hose.
Take a moderately deep breath, hold the opening of the DSMB over the valve, and exhale. Your exhalation gas will run from the exhaust valve and into the DSMB.
Repeat this once or twice as needed, until you feel a strong tug from the DSMB (use your breathing to counter the positive buoyancy of the DSMB or release a small amount of air from your BSC), then release it, holding the line spool / reel in your right or left hand and allow it to un-reel line as needed.
Once the DSMB breaks the surface, reel in a bit of line so it is taught and the DSMB stands straight up on the surface, making it as tall and visible as possible.
Remember to check your depth and dive computer from time to time. Rather take a minute longer deploying your DSMB than you accidentally pop to the surface.
Many agencies now provide a DSMB training course. These courses take you through the whole DSMB process and give you a safe environment to practice deploying your DSMB.
Many divers will tell you to use your alternate second stage to fill the DSMB, but there are several advantages to the method described above, where you use your exhalation air instead.
First, filling air into a DSMB makes it positively buoyant. By using your exhaled air, there’s no shift on your overall buoyancy. Second, this method allows you to fill your DSMB even if you’re diving with a technical setup, where your secondary second stage is stored in a necklace around your neck.
Practice makes perfect, of course, so make sure you practice this before needing to do it for real, and keep practicing from time to time to keep your skills honed.
A pool or a local dive site is perfect for this. But make sure to let any shore based bystanders know that you’re only training, so they don’t misinterpret it as a distress signal and start calling the coast guard.
Yes! Your reel, line spool and DSMB do need some basic maintenance to make sure that you have years of hassle free operation.
On every weekend diving there is always someone that has a problem with their reel. Line snagging, reel jamming and so on.
My question is always ‘when was the last time you serviced you reel & line?’.
The answer, 99% of the time is ‘service?’.
There are a few quick and simple steps that you can do that will prolong the life of your reel and line. It will help to prevent reel jams and line tangles.
Pop your reel into a fresh bucket of water, leave it over night.
Reel out the line completely, you can do this in a number of ways, I put mine around patio furniture. This help you to check the quality and the state of the line (abrasions, rotting etc).
While you have the line completely off take the opportunity to grease, tighten and clean the reel itself.
When it is all dry wind on the line taking your time to make sure the line is evenly spread and suitably tight.
It’s not rocket science but it really will help with all those niggles!
Information source: DiveStyle Diving limited and Dive-In Magazine
10% Discount on all GoPro accessories until the end of July 2013!
No matter what accessory you need we are here to provide it!
When you think of a HD Video camera that exceeds all your expectations, then reach for the GoPro Hero 3!
Go anywhere, attach anyhow, shoot anything!
GoPro remains at the pinnacle of sports-oriented compact video cameras.
Watch any broadcast of a daredevil stunts show or extreme sport and you will doubtless spot a little box attached to an appendage or vehicle. GoPro is the go-to guy of sports cameras.
GoPro’s 2012 line up of HERO3 cameras has been split into three: the White, Silver and Black editions all sport different megapixel counts and frame rates. The Black Edition is the top dog with a twelve-megapixel sensor capable of shooting larger images and with enough processing power to snap bursts of 11MP images at 30 frames per second.
All HERO3s come with Wi-Fi built-in, plus a redesigned casing with a flat lens which has led to two improvements over its predecessor, the HERO2.
OCEANIC OCS NOW ONLY £440.00 (SRP £445.00) – Buy Now!
The OCS Dive Computer is the latest release from Oceanic. A watch sized unit that has been designed to be a stylish everyday watch as well as a fully featured dive computer.
A split standard LCD and dot matrix display provides a clean and clear screen to see all the essential information pre, during and post dive. The housing is made froma lightweight but strong composite material with a stainless steel back cover and bezel.
The major features include Oceanic’s Dual Algorithm technology to allow the user to adjust the computer to perform the same way as the majority of other dive computers currently on the market. Great if you regular swap buddies who have different makes and models of computers. The OCS also accepts up to 3 nitrox mixes which are switchable during the dive and a digital compass provides easy navigation underwater.
Dive profiles can be downloaded to your PC with the optional interface.
OCEANIC VEO1.0 The brand new Veo 1.0 is a low cost, entry level, dive computer which can be used with air or single gas nitrox mixes of up to 50 percent. The Veo displays easy to read, essential information in the form of graphs such as nitrogen loading and offers great features such as a countdown timer during a safety stop.
The Oceanic OCS is an elegant wristwatch dive computer featuring an intuitive operating system, Dual Algorithm®, advanced digital compass, 3 Nitrox mix capability, and so much more. All in a strong, lightweight composite housing reinforced by a stainless steel case back and bezel.
OCEANIC DATAMASK The DataMask is not just about having a computer in your mask – it is about the many practical benefits provided by truly “Hands-Free” diving. The DATAMASK contains a miniature liquid crystal display (LCD) panel, proprietary Digital Optic System, microprocessor, depth transducer, wireless cylinder pressure receiver, diver replaceable battery, and controlling software.