Monthly Archives: September 2019

Episode 15 – 9-22-19



In this episode we discuss the value of a log book, the Sea Turtle Conservancy, and motion sickness

I consider your log book as a very important piece of your dive gear. Unfortunately, the dive log is often neglected by divers. It is your dive diary. If you keep your dive log up-to-date you will be able to look back and relive those dives. You will know how the dive went, what you wore on the dive, the conditions and so much more. Be a conscientious diver and maintain your dive log. Listen to a couple of my dives from my dive log.

Sea turtles have been under threat for a very long time. The Sea Turtle Conservancy https://conserveturtles.org has been working to protect sea turtles since 1959. Originally the Sea Turtle Conservancy started as the Brotherhood of the Green Turtle in response to the book The Windward Road by Dr. Archie Carr. One of the threats currently faced by all sea turtles is artificial lighting. Listen for more information on how the Sea Turtle Conservancy is helping to address this problem.

For some divers boat diving is a challenge. It is a challenge because of motion sickness. We just don’t know why some people are prone to seasickness while other aren’t. There are several articles on the DAN website that discuss possible causes, medications and other remedies. A lot of great diving is done from dive boats. Hopefully if you suffer from motion sickness you will be able to find the best remedy for you. 

https://www.diversalertnetwork.org/medical/articles/Motion_Sickness

https://www.diversalertnetwork.org/medical/articles/Motion_Sickness_Updated_2003

https://www.diversalertnetwork.org/medical/articles/Transderm_Scop_The_Patch

 

 


Scuba Shack Radio #14 – 9-8-19



In this episode we discuss scuba tank visual inspections, age and diving, Sea Hunt – the other pilot episode

We learn early on in our training that there are two different types of inspections for scuba tanks – hydrostatic (every 5 years) and the annual visual inspection. Only the hydrostatic test is mandated in the US by the US DOT. The visual inspection is a scuba industry standard. It all came about in the 1970s in response to a study conducted by the University of Rhode Island on behalf of the National Underwater Accident Data Center titled Investigation of scuba cylinder corrosion – phase 1. The findings were powerful enough for our industry to self-regulate on this critical safety inspection.

As we grow older, we are not able to do some of the same physical things that we did in our youth. Diving should not be one of those things. There is a chapter in The Complete Diver by Dr. Alex Brylske that discusses age and diving. There is some great info in this chapter along with the reference to a study published in 2003 that shows that age does not dramatically impact diving as long as we stay physically fit.

Mark of the Octopus was actually the first episode of Sea Hunt that was ever produced. It was a pilot episode used to try and sell the show to networks or syndicators. We are introduced again to Mike Nelson fresh out of the Navy, his boat, and the gadgets like an underwater TV camera. Mike is working again for Marine Land of the Pacific at the start of the show. When two divers go missing he is hired by a mining company to find them. One of the divers turns up dead with octopus like marks on his leg but Mike is skeptical and turns out he is right. Underwater fights, spear guns, regulator hose cuts, feeding eels, capturing porpoise, trying to catch a manta ray make this a must see episode.


Scuba Shack Radio #13 – 9/1/19



In this episode we discuss Nitrox, whales and ocean noise, and where did the term SCUBA come from (you might be surprised)

Enriched Air Nitrox is one of PADI’s most popular classes. Why – longer no decompression limits, especially on repetitive dives. With a combination of electronic learning, classroom lecture, use of the dive computer and practical application, you are ready to manage the risks associated with Nitrox, mainly oxygen toxicity and have more fun. Nitrox is an essential class for all scuba divers.

The ocean is a noisy place and getting louder all the time. Whether it is from shipping, seismic testing or sonar, the noise is doing great harm to the ocean inhabitants, especially whales and dolphins. You can check out a couple of web sites – https://us.whales.org or http://wildwhales.org. The film titled – Sonic Sea is a powerful documentary on this serious threat. You can order it on Vimeo.

Where did the term SCUBA come from? It wasn’t Jacque Cousteau. It was coined in a paper written by Dr. Christian J Lambertsen and Walter A Hahn in 1952. The report is titled “On Using Self-Contained Underwater Breathing Apparatus”. It was written for the National Academy of Sciences National Resource Council as Publication 274. Dr Lambertsen was also the inventor of the Lambertsen Amphibious Respiratory Unit (LARU) – a very early rebreather.