High Altitude Diving, the Tampico and More

For many years, we have known some aspects of diving at altitude required changes in the procedures used at sea level. As early as 1966 a Technifacts reader wrote, What factors should we take into account in diving in bodies of water at altitudes above 5,000 feet? More specifically, What is necessary to complete safe…


Pollution

by E.R. Cross Water is a chemical compound of hydrogen and oxygen, having the well known formula of H2O. It is abundant and widely distributed. It is also essential to animal and plant nutrition. Its many uses have led to an equal number of abuses. Ten years ago, only three small rivers, all in the…


Reading the Water

by E.R. Cross The study of the seas, lakes, rivers and other bodies of water is the science of hydrography. It is not necessary for divers to be hydrographers. However, for maximum safety and the greatest enjoyment, a good working knowledge about some aspects of the diving environment is helpful. With a combination of knowledge,…


Return to the Grosvener

by E.R. Cross Oceanic shipwrecks and associated treasures have been a reason for diving for a very long time. Centuries ago early divers relied on their physical condition, ability and experience to dive to considerable depths in treasure recovery. The transoceanic waterway that had the greatest number of lost ships and treasures was the turbulent…


Safe, Successful Commercial Diving

by E.R. Cross Each year hundreds of recreational divers will make the decision to become commercial divers. Most will start their careers by attending a commercial diving school. For this reason, recreational divers should know what diving schools teach. Also, they should be aware of future trends in diving technology. Divers should know both the…


The Grunge Line

by E.R. Cross Recreational diving can be almost anything a diver wants it to be. It can range from the undiluted pleasure of breath-hold (free) diving to the hard work (and it is hard work) of mixed gas diving. Regardless of the diving mode a definite pattern should be followed. For a safe dive certain…


Where Have All The Pearls Gone?

by E.R. Cross Diving today is of international significance. Commercial dives contribute to building most infrastructures needed to promote commerce on a worldwide basis. Recreational divers enjoy the sights and sounds of almost all areas; including many once reserved for the open sea divers (harvest of sea products). Perhaps this is the reason several letters…


Taravana in Pearl Divers

by E.R. Cross There has been an increasing interest in snorkeling and breathhold diving by recreational divers. This has reawakened an interest in some of the greatest breathhold divers in the world, who earn their living by harvesting products of the sea in deep water. Perhaps the greatest of the breathhold divers are the Paumotan…


A Portable Chamber and DCS

by E.R. Cross A Technifacts reader recently wrote asking :What can Technifacts tell me about a German designed, portable, telescopic decompression chamber? The only telescopic chambers I know of were the small, lightweight units made by the German Draegerworks. These were in use at least as early as the 1940s. Their major advantages were their…


Abnormal Shells and Piracy

by E. R. Cross Some of the most rewarding experiences in recreational diving, whether with scuba or free-diving, are the underwater encounters;from sharks to the tiny marine life that may be drifters, swimmers or bottom dwellers. Divers will ultimately find all sizes of marine life equally exciting and certainly different. As they gain knowledge and…