Archive for the ‘Features’ Category

Report on the under-ice diving

Blue Silence is a company dedicated to the provision of subsea services and in the academic area, we are the main training school sport and professional divers, under the standards of the Navy of Chile, where our primary mission to provide synergizement, quality services where they excel and professionalism, and in turn, can deliver enthusiasm and commitment with our expertise, advice and dissemination to commercial diving and sport throughout our country or anywhere where there is the possibility of entering the Read the rest of this entry »

Sign of Panic

Things to remember in the midst of the swimming season.

At the beach Astana sank a 30-year-old citizen of China, reports the press service of the MES RK.

Rescuers recovered the body of water after five hours.

According to the World Health Organization, on the water about 450 die every, year thousands of people around the world. More than half of all drowning – those aged 20-25 years, and most of them – the people who knew how to swim.

How do you know that a person is drowning?
We’ve learned at that people are drowning in movies and noticeably loud – shouting, waving and splashing with his hands. Real life is not so.

In his article in the American Journal of Coast Guard “Coast Guard’s On Scene” PhD Francesco A. Pia described the so-called instinctive reaction of a drowning man. And this reaction is not the way we think, must look like a drowning man behavior.
Drowning man is simply no time to come up so much that he had enough time to breath and cry.

Hands he did not waving: the person instinctively throws his hands in hand to push off from the water and push the body upward. In addition, as the scholar, with an instinctive reaction drowning man can not control the hand movements.

He physiologically unable to stop the instinctive movement and begin to make meaningful – for example, waving his arms, move to the rescuer or cling to life-saving devices.

Certainly, a drowning man might shout and wave my arms – a state of panic, which precedes the instinctive reaction drowning. But the panic may not be buried just quietly go under water.

Sometimes the surest sign that a person is drowning – is that it does not seem to drowning, says U.S. expert on the Coast Guard Mario Vuitton blog gCapitan.

“It may seem that a person simply goes in the water. Do you want to be sure? Ask if everything is in order. If you answer, then, perhaps, the way it is, and if the answer you will only blank look – you have 30 seconds to save the man. ”

Often, people are drowning due to neglect of safety rules. Often would-be swimmers are swimming and diving, where it is prohibited. The saying “do not know the ford, do not go into the water” here is appropriate in the most literal sense: a person can not cope with the flow and to panic – but it is a sure way to the bottom. Or receives a head injury and neck when jumping into the water. Another proverb says that a drunken man in the water – half-drowned.

Drunk man is poorly controlled their movements, poorly focused. In addition, alcohol blocks sosudosuzhayuschy and vasodilator center in the brain.

Even a good swimmer, having too much, may overestimate their own strength, and water is a presumption does not forgive. So that alcohol and swimming are not compatible. Other Pitfalls in the water – this is hypothermia. If a person gets into the water colder than 10 degrees (in a mountain stream, the temperature is quite possible), then begin to act psychological reactions. A person in a state of shock from immersion in cold water slips his breath, he can not control their movements. This shock can be fatal in itself.

Length of stay safe in the water depends on its temperature. But even at 20 degrees more than 2.5 hours in the water people can not survive. The time spent in water increased gradually better with every race.

This popular entertainment today as diving can also be deadly. Many think that the cost to buy a mask and flippers, and they are fully prepared to master the water element. In the meantime, if time does not float and do not refill the oxygen in the body can lose consciousness and die under the water. And with scuba diving and barotrauma can get – from high blood pressure.

Rules of conduct on the water is not so complicated. Because of the seeming insignificance of their often neglected.

Do not swim for the buoys. Behind them can be places with strong currents, there are walking and boat launches. You do not want to please them under the screws? For the same reason you should not swim in the waves coming from the boats, personal watercraft and boats. Swim buoys for more dangerous because you can not calculate their strength. But if this has already happened and you feel fatigue in the distance from the shore, do not get lost and do not try to swim faster to it – so you can only break out of power. At such a moment to relax on the water, turned over on her back and supporting himself on the water with light movements of the hands and feet.

Precautions need to float on air mattresses: the wind can carry them far from shore and the waves – turn.

Swim better in the morning or evening when there is no danger of overheating. The water temperature should be at least 17-19 degrees in the water is recommended not to exceed 20 minutes.

Sharply to enter or jump into the water after prolonged sun exposure is not necessary – with cooling water comes muscle contraction, and this may lead to heart problems.

The rescue of drowning, as is known, the handiwork of drowning. However, our best in this category simply avoid drowning. We must remember that swimming is only safe in well-equipped beaches where all the dangerous places are marked with appropriate signs, and the rest on the water guarding the workers life-saving stations.

The heated glass in cold water sweat.

Ilja V. Dubrovsky of Internet Dive Club (IDC) said a number of shortcomings when wearing a mask on his forehead. Shifted mask on his forehead sweat from his forehead and creates this very forehead not weak greenhouse effect (especially during the wait, sometimes longer), from which the newcomers are not aware of this fast tire … – However, this is true for wearing masks at the back – napekaet brains.
Second, the mask on his forehead sweat from his forehead and evaporative loses its purity, so that then the sweat and the water. – This is also true for the mask, which is heated at the back. The heated glass in cold water sweat. It is treated easily, but for a beginner can provide an additional complication.
The third mask on his forehead back a student into position quickly and easily (this is true, and it is logical) and it is very rare for Read the rest of this entry »

Olympic torch diving …

Today I was reminded of that fantastic scene of a diver with the Olympic torch and wanted to share … remember?

The Olympic flame made ​​you first ever journey underwater STI When It Was Carried underwater marine biologist by Read the rest of this entry »

Diver on the edge of an Olympic diving board or stand.

Diver on diving stand

Diver diving stand
Diver on the brink of Olympic diving board or standing.

competition risk free dive to enjoy spectacular Freedom Jump the light metal night Olympic pool play recreation refresh refreshing relax reflex relaxation of the form Sign sport swim ladder stress swimmer Read the rest of this entry »

The healing water containing nitrogen, silicon, sulfur, sodium, chlorine and other mineral elements.

In the province of Baria Vung Tau, is a health tourism center Bintyau. Hot mineral water makes its way to the surface in many places (more than 70 outputs) with a depth of 3-5 thousand meters. It spreads across a width of about a mile, forming a network of streams. The water temperature in these natural baths do not drop below 37 degrees. And in Read the rest of this entry »

The History of Diving- Dutch

Much of Greek mythology is based on diving. Neptune was the god of water. The Romans and Greeks Had destruction diving groups. The divers were held their breath or snorkeling without fins.

Breathing tube and breathing bags.

The most obvious and most crucial step to increase the capacity of diving underwater to increase was to provide them with an air so it stays under water could be extended. Hollow tubes and came to the surface, but they could do little useful work. A series of designs was Read the rest of this entry »

Varying Permeability Model (VPM) References

Primary Modeling References:

Yount, D.E. and Hoffman, D.C. 1984. Decompression theory: A dynamic critical-volume hypothesis. In: Bachrach A.J. and Matzen, M.M. eds. Underwater physiology VIII: Proceedings of the eighth symposium on underwater physiology. Undersea Medical Society, Bethesda, 131-146.

Yount, D.E. and Hoffman, D.C. 1986. On the use of a bubble formation model to Read the rest of this entry »

Hydrology studies in the EIA

The work we do includes the following phases:
1. Definition of areas of involvement in order to obtain the exact definition of the watershed contributor channel under study, as to the physical characteristics of the same will get the design flow for different return periods: 10,25,50,100 and 500 years.

2. To propagate the flow of hydraulic Avenue conducted a study of the channel cross sections are obtained every 10 meters in general and in more Read the rest of this entry »


Dive Center Caetaria doing their usual practice of diving discovered the illegal funding of a fine-mesh trammel nets in the area of ​​Punta San García. This area is protected as an area of ​​Grand Reserve as part of the Parque Natural del Estrecho, due to the biological richness and faunal diversity.

In this area is prohibited from any type of fishing, especially illegal ones such as Read the rest of this entry »