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Night Dives
Tuesday, 29 December 2009
Go at Sunset Many dive boats will leave for a night dive right before sunset. That way you have light to get your scuba gear ready. It also feels less intimidating (to me anyway) to go out while there is still some light left. Likewise, if you are doing a shore dive, plan on hitting the water right before the sun sets. Even though you will have some light above the water, it will still be pretty dark underneath. And by the time you surface, it will be dark out. Dive a Familiar Site If this is your first time scuba diving at night, try and go to a site you are familiar with. If you are thinking of doing the night dive, sign up to do a dive at the night dive site during the day. This way you will have some idea of what the area is like and may feel less apprehensive. Keep it Shallow A night dive is typically a shallow dive. I would say 20 meter is probably max with 10-15 meters more the norm. Get Some Light You obviously need some dive lights when you are doing a night dive. It's best to have a primary light and a backup light in case the first light fails. The secondary light can be small and could fit into your pocket. You don't need the biggest and brightest light you can find. In fact, it is fun, once you get accustomed to diving at night, to turn your light off and let your eyes adjust to the dark. You'll be amazed at what you can see. Of course, it is up to you and get the light you would feel comfortable with while diving at night. If you don't want to turn your light off underwater (I've never had a problem turning it back on but you never know) you can always face it into your BC so you get the same effect. Attach It You will want some method of attaching that dive light to you. That way if you let go, it won't sink to the bottom, never to be seen again. A lanyard or stretchy cord (or whatever you are comfortable with) work fine. Which reminds me of one of the next night scuba diving tips: Use Reflective Tape One thing I have seen which I think is a good idea is to mark your lights or other paraphernalia with reflective tape. That way if you drop something, you be able to spot it once the light shines on it. I've seen people put an X on their BC or tank so their dive buddy can tell it's them. Something worth considering. Take it Slow There is alot to see at night. You will see a whole different world underneath at night than during a day. Take your time and look in those nooks and crannies. The reef also looks brilliant and colorful in the beam of your light. Much different than during the day when you are diving deeper and the colors are absorbed. Descend Feet First It is best to descend feet first and look down when you are descending. You can shine your light underneath you (just make sure you are not shining it in someone's eyes) to see where you are going so you don't hit or disturb the coral. More night scuba diving tips: Get Familiar With the Hand Signals When you are night scuba diving, you need to discuss the hand signals before you begin your dive. Since it is dark down there, your buddy won't be able to see your hands. The divemaster will probably tell you what signals to use. If they don't, just ask. There is nothing wrong with that. A typical way to use hand signals is to shine your light on your hand so your buddy can see them. Another common night diving signal is to move your dive light in a circle to signify "OK." Moving it up and down or back and forth can signify yes or no. Whatever you choose to use, just make sure you clarify before you begin the dive. Which leads into one of the next night scuba diving tips: Watch Where You Aim That Light Be aware of where you aim your dive light. If you put the full force of that light beam into somebody's eyes, you can momentarily blind them. It will take a little while for that diver to adjust his night vision again. So be careful. Keep an Eye on Your Gauges If you are new to scuba diving at night, you may go through your faster than your would during a typical daylight dive. This could be compensated for by the fact that a night dive is usually shallow, but just be aware of your air at all times. Of course, this is one of those night scuba diving tips that is applicable to day scuba diving too. Mark Night Diving Entry/Exit Points If you are doing night scuba diving off a boat, the boat should have a flashing strobe light attached to it so it is easy to find. As you are ascending, make sure you are looking up and know where the boat is so you don't bang your head. If you are doing a shore dive, you should also know how to mark the night diving entry/exit point. The most common way is to place lights on the shoreline. You should use more than one to make it easier to spot. You could have 2 close together and 2 close together but further down the shoreline. Or whatever configuration works for you. It also doesn't hurt to have someone on the shore to make sure the lights don't go out (or somebody doesn't swipe them). And last, but not least, the last of the night scuba diving tips: Keep an Eye on Your Buddy If you happen to lose sight of your buddy, one way to find him would be to shut off your light and look for the glow of his light. He shouldn't be that far from you and you should be able to see his light. Another, and pretty much opposite way, is to turn a full circle while pointing you light outward. You might be able to see your buddy in the beam or he might notice the movement (if he hasn't noticed you are gone yet). If the boat has to come pick you up after you have surfaced, shine the light on yourself so the captain can see you. And that the last of my night scuba diving tips. If you haven't done night scuba diving, you should really give it a try. It's a different experience and isn't difficult. You just have to get used to it, like all new things. You'll see lots of new creatures and habits to add to your memories. So give it a try. I hope these night scuba diving tips will help make your first night dive a more comfortable experience. Source: www.scuba-diving-smiles.com

 

 

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