LE MAGAZINE OFFICIEL DU RÉSEAU DIVERS ALERT

Lire les numéros précédents d'Alert Diver

Filtrer les articles disponibles en sélectionnant une catégorie :

Filtre...

  • Réinitialiser les résultats

Opération "Soleil levant

Par Joe Poe

Q2 2021

L'histoire de la recherche du sous-marin japonais I-52 est celle de deux découvertes séparées par le temps et l'objectif. En 1944, dans la nuit noire de l'océan Atlantique, les navires anti-sous-marins de la marine américaine ont recherché une rencontre clandestine entre des équipages allemands et japonais. S'appuyant sur des renseignements recueillis, ils ont cherché à surprendre et à couler les deux sous-marins. Un demi-siècle plus tard, le I-52 n'a toujours pas été découvert sur le fond marin, mais cette fois-ci, les recherches se sont déroulées dans l'obscurité des profondeurs de l'océan, à la recherche d'une possibilité et non d'une destruction.

Survivre à un triple danger aux Maldives

Par Anthony G. Holland

Q2 2021

A diver didn’t heed the divemaster’s warning and was lost at sea. Deploying his large surface marker buoy helped with his rescue. DAN recommends that divers always listen to the dive briefing and follow all directions and always carry an SMB and reel. If your breathing-gas supply is critically low, get to the surface at a safe ascent rate, and then monitor for signs of decompression illness. It is better to deal with DCI on the surface than to run out of breathing gas at depth.

An Insider’s Guide to Roatán

Par Francesca Diaco

Q2 2021

Located in the Bay Islands of Honduras, Roatán is a tropical gem nestled in the turquoise waters of the Caribbean Sea. The largest of the Bay Islands, Roatán sits about 30 miles off the Honduran coast between Utila and Guanaja. Its fringing reef system makes up the southernmost edge of the Mesoamerica Reef (the world’s second-largest reef system) and is arguably Roatán’s biggest attraction.

Magie dans le Golfe

Par Jesse Cancelmo

Q2 2021

If you like the idea of a liveaboard adventure with remote, open-ocean diving where your dive boat is likely the only one on the reef, you’ll love a trip to Flower Garden Banks. It remains one of the best-kept secrets for wilderness diving in the continental U.S., where you can expect rare encounters such as a longlure frogfish on a sponge, scalloped hammerhead sharks feeding or a whale shark swimming by.

Prise de vue dans un environnement turbide

Par Mike Bartick

Q2 2021

Turbid water can be a challenging environment for underwater photographers, particularly when shooting wide angle. Turbid water may not appear brown or green from the surface — in many cases the water looks entirely different once we drop in and begin the dive. All water is turbid to some degree. Understanding what causes turbidity and knowing how to work around it can make a world of difference when shooting in those conditions. One of the best skills a photographer can develop, particularly for shooting wide angle, is learning how to read water quality.

Le SAD à Cozumel

Par Matthew Brett

Q2 2021

Our checkout dive was easy, with a maximum depth of 75 feet for 50 minutes. The current was slight, and the visibility was spectacular — an ideal first dive. It closed with a nice, slow ascent and a three-minute safety stop. When we returned to the boat, I felt a sudden tingling in my right foot followed by a dull ache in my knee. I assumed the worst, thinking I had decompression sickness (DCS). When I reviewed the dive in my mind, however, that seemed impossible.

Howe Sound

Par Brandon Cole

Q1 2021

With nearly 16,000 miles of rugged coastline and more than 40,000 islands and islets, British Columbia’s Howe Sound features fantastic marine life and spectacular coldwater scuba adventures. Stretching 27 miles from its narrow head under lofty mountain peaks at Squamish to its wide-mouth opening into the Strait of Georgia just northwest of Vancouver, Howe Sound is North America’s southernmost fjord. This sea-to-sky corridor crafted by glaciers and perfected by time seems tailor-made for subsea exploration — reef and wreck, rec and tech.

Lire les numéros précédents d'Alert Diver