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Paul Toomer: Wreck Head

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Backup Lights

Part 7 – Backup Lights

instructor-paultoomerIn the last ‘Wreck Head’ I started my discussion on primary lights with a little story about God’s primary light, the sun. Of course it has a cycle that it goes through and after around 12 or so hours in our sky it goes down. We are then plunged into darkness and before house and street lighting we all walked around banging into things and each other. Some of us fell down big holes or walked into bear caves and were eaten alive!!!

No, No, No… what utter rubbish.  God in his infinite wisdom designed his own backup light so that we could all be safe while he put the sun on a trickle charger overnight. His backup light is the moon of course.  Which funny enough is not made of cheese as previously theorised.

Toomer Wreck 2It does not take a rocket scientist (no pun intended) to work out why a backup light system would be a good thing to carry on all penetration dives. Loss of lighting in overhead environments has, unfortunately, been the cause of the untimely demise of a fair few divers. The really sad thing is it’s so easy to setup a backup system. What we want is a backup system that is pretty dependable and easy to use. And divers can’t even blame cost on not having lights anymore as the manufacturers have released backup lights to suit all pockets without jeopardising safety.

In this ‘Wreck Head’ we have a look at the design, reasoning behind, and the placement of backup light systems for overhead environment diving.

The most important thing I want from my backup light is… well, light!

Now this sounds daft but look at The Big Guy for example, he made loads of backup lights for us, they are called stars, but you can hardly bask in their light can you? So when I pick a light I want it to project a decent amount of light.  I do not need it to be as powerful as my primary light in any way shape or form. I just need to be able to see my guideline, my directional markers, potential entanglement, abrasion hazards and of course the exit which is of paramount importance.

Toomer 2With this in mind, it means we can downscale the size of the backup light. We do not need anything complex and it does not need to be the size of a Winnebago. By downscaling we get pros and cons. The pros are, we can stow the light really easily. Therefore it can be placed in an area where it is super streamlined, easily accessible and easily restowed. The cons are that unless you place it properly it can be a pain to find and if the light is not set up or placed properly it can be easily dropped and lost. Of course the final issue is that small lights have shorter burn times… or do they?

Modern backup light systems use LED (Light-Emitting Diode) bulbs that emit a huge amount while using a relatively low amount of power. LED lights also have an extremely long life with the average LED lasting around ten to twenty thousand hours. In today’s world, buying a backup light that is not LED is quite simply nuts. Hell, do any of the manufacturers make non LED lights?

The ideal backup light needs to be a thin long(ish) cylindrically shaped light with no handle on it. I prefer to have no switches either; I like lights that are turned on by screwing the light head in or out. The problem with having a light with a switch on is that sometimes switches don’t work. However, modern switches are much more reliable than they were just a few years ago.

Toomer 1I like the long cylindrical shape as I can fix a single piston clip to the base of the light and have the light hang from my Chest D Ring on my harness. The light needs to be around the same diameter as the width of a piece of webbing. This allows us to secure the light to the webbing using bungee loops or preferably bicycle inner tubing threaded onto the harness. The light must not be too long as it will hang too far towards the diver’s waist making it very uncomfortable to wear. Also, if it is too long, accessing the light will be a lot more difficult.

So, we hit the wreck with our primary, umbilical, lightsaber, monster of a light that will make those things at Wembley look like Christmas tree lights and a backup. Sorry, big mistake. We take two backup lights with us. Backup lights need to be trustworthy and reliable so the industry standard is to use non-rechargeable batteries rather than rechargeables.

The simplicity is that rechargeable batteries lose their charge quite quickly and sometimes don’t take on charge properly. Sometimes the batteries just die. With non-rechargeable batteries we open a new packet of factory made, one life only batteries, this minimises the chances of any of the above failures. But just to be double sure, we have a second light prepared in exactly the same manner. So if backup light one goes, we simply move to light two.

Toomer 4This also gives us a time advantage, as it should take an age to burn two lights out. The second light can also be given to a teammate in the event they have a VERY bad day out and lose all their lighting. My favourite reason for carrying that third light is that it can be tied into the guideline in the event of a lost buddy scenario. The small light ties easily into the line and the search diver can leave the beam of the light facing the exit in case the missing diver returns to the line. What a bloody brilliant bit of lateral thinking by the person that designed this technique.

Using the backup light is really simple. Both lights are piston clipped to the chest D rings on the left and right sides of the harness. If one has to be used, the diver simply pulls the light free from the bungees or tubing, turns it on and aims it in the direction they want to go. NEVER unclip the light from the D ring – if you drop the light, it stays attached to the D ring and most importantly, YOU! Another great advantage of setting your backup light system like this is that if you have to work with both hands, you can let the light go and it will naturally shine down illuminating whatever you are working with.

And there you have it.

I hope you agree with me now that not carrying a backup light system is quite frankly mad! Simple, cheap, streamlined and easy to use. And let’s face it, they look über cool too!!!

RAID_Concepts_vFPaul is the Director of Training at RAID. To find out more about the courses that RAID offers, visit www.diveraid.com.

 

After living in South Africa for 23 years, Paul moved to the UK, where he discovered diving. Within months of learning to dive he had his own centre in London and rapidly progressed to Course Director before finding his passion for technical diving. Paul is an avid wreck, cave and rebreather diver, and has worked as an Instructor and Instructor Trainer for PADI, IANTD, and TDI. Paul recently held the position of Director of Technical Training for SSI, but moved on when he was offered the chance to co-own and run his own training agency. Paul now holds the role of Director of Diver Training at RAID International.

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Jeff chats to… Underwater Photographer Ellen Cuylaerts (Watch Video)

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In this exclusive Zoom interview, Jeff Goodman, Scubaverse Editor-at-Large, chats to Ellen Cuylaerts about her diving and underwater photographic career.

As an underwater and wildlife photographer, Fellow of The Explorers Club and having a front seat in exploration being part of the Flag and Honours Committee, Ellen is also a Member of the Women Divers Hall of Fame. She travels the world and tries to make the most of every destination and the path that leads her there. Ellen acts as an ocean citizen and believes as divers we should all be ocean ambassadors and lead by example. She is now based in the UK after many years in Grand Cayman.

Find out more about Ellen and her work at www.ellencuylaerts.com


Rather listen to a podcast? Listen to the audio HERE on the new Scubaverse podcast channel at Anchor FM.

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Marine Life & Conservation

Huge thresher shark is the latest of six murals to be painted around the Solent this summer

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The murals celebrate the Solent’s extraordinary marine life – marking National Marine Week.

Secrets of the Solent have commissioned street artist ATM to paint a series of marine-themed artworks at various locations around the Solent this summer. The latest mural to be finished shows a thresher shark on the Langstone Harbour Office. Langstone Harbour is an important area for wildlife as well as a bustling seaside destination for sailing and water sports.

Artist ATM, who is painting all six murals, is well-known for his iconic wildlife street art. This, his second artwork of the series, took three days to paint freehand, from a scaffolding platform. The thresher shark was chosen out of six marine species to be the subject of the artwork by the local community, who were asked to vote via an online form or in person on the Hayling Ferry.

Secrets of the Solent hope the mural will become a landmark in Langstone Harbour and inspire visitors to learn more about this enigmatic oceanic shark. The project, which is supported by the National Lottery Heritage Fund, works to celebrate and raise awareness of Solent’s diverse marine environment.

Aiming to highlight the exotic and unusual creatures found close to our coasts, artist ATM says: “I really enjoyed painting the thresher shark because it’s such an amazing looking animal, with a tail as long as its body. I hope when people see the murals, they will become more aware of what lives under the waves and the importance of protecting the vital habitats within the Solent.”

Dr Tim Ferrero, Senior Marine Biologist at Hampshire & Isle of Wight Wildlife Trust says: “The thresher shark is a wonderful animal that visits our waters every summer. It comes to an area to the east of the Isle of Wight, and this appears to be where the sharks breed and have their young. Not many people know that we have thresher sharks in our region, and so having our mural here on the side of the Langstone Harbour Office building is a fantastic way of raising awareness of this mysterious ocean wanderer. I really hope that people will come away with the knowledge that the Solent, our harbours and our seas are incredibly important for wildlife.”

Rachel Bryan, Project Manager for Secrets of the Solent at Hampshire & Isle of Wight Wildlife Trust comments: “We are really excited to have street artist ATM painting a thresher shark on the side of the Langstone Harbour Office building. We chose this building because of its prominent location right on the entrance to Langstone Harbour so that anyone who’s visiting, whether that’s walkers, cyclists or people coming in and out of the harbour on their jet-skis or sailing boats, will all be able to see our thresher shark. People on the Portsmouth side of the harbour will also be able to see the mural from across the water.”

The thresher shark is a mysterious predator which spends most of its time in oceanic waters. It uses its huge whip-like tail as an incredibly effective tool for hunting its prey. Herding small fish into tight shoals, the shark will lash at them with its tail, stunning several in one hit and making them easier to catch.

Secrets of the Solent hope to work with the species this summer to discover more about its behaviour.

Dr Tim Ferrero explains: “Nobody really knows where thresher sharks go in the ocean. Later this summer we are hoping that we are going to be able to attach a satellite tag to a thresher shark and monitor its progress for an entire year. This will provide really important information that will help us learn so much more about the shark’s annual life cycle.”

The new thresher shark mural is a fantastic start to National Marine Week (24th July – 8th August), which celebrates the unique marine wildlife and habitats we have here in the UK. Over the two weeks, Wildlife Trusts around the country will be running a series of exciting events to celebrate the marine environment. We really hope people will be inspired by our murals and want to learn more about each chosen species.

Events in the Solent include the launch of a new Solent marine film on the 29th July, installation of a new Seabin on the 4th August to reduce marine litter, and citizen science surveys throughout summer.

For more information click here.

Header image: Bret Charman

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