Tag «wreck»

PHORCYS UNDERWATER ACTIVITIES – EPISODE#50

“VALSALVA MANEUVER” (Part#01) A Valsalva maneuver may be the easiest, but is not always the safest way to achieve ear’s pressure equalization. Excessive force can expose us to barotrauma hazard. In addition, it causes increase of force to the mediastinum (the space between the lungs where the heart and the big vessels are located), influencing …

PHORCYS UNDERWATER ACTIVITIES – EPISODE#56

PHORCYS UNDERWATER ACTIVITIES – EPISODE#56

“COUSTEAU MANEUVER (B.T.V)” Part#01 Cousteau Maneuver or Beance Tubaire Voluntaire ( BTV), is a maneuver which does not imply pinching of the nostrils. It relies upon voluntary constriction of deglutition muscles. Those muscles have attachments to the orifice of the Eustachian tube. Therefore, constriction of the muscles opens the rhinopharyngeal ostium of the tube, producing …

PHORCYS UNDERWATER ACTIVITIES – EPISODE#09

PHORCYS UNDERWATER ACTIVITIES – EPISODE#09

It was outside of the rock and i made a shot! Grab the speargun and hold it. I’ll make a second shot! Come on! Hold tight! i can’t see anything… …listen! The fish was calm with the head facing the hole, and i didn’t turn the flashlight on. I could only see it’s tail. By …

PHORCYS Spearfishing Worldwide Videos #144 – Underwater Activities 2019

PHORCYS Spearfishing Worldwide Videos #144 – Underwater Activities 2019

MARINE ELECTRICAL INSTALLATION Choosing the right electrical installation on board may be the most important of all others. In addition to proper functionality it also offers security, which is a very serious factor. The installer- manufacturer should take into account the following: • have unbalanced insulation with overload resistance • the wires should be tinned …

Eric Rodriguez on his favourite shipwreck

Eric Rodriguez on his favourite shipwreck

Hi! I’m Eric Rodriguez. My favourite wreck is the ‘Bonhomme Richard’, which is a very important wreck both to both American and British histories, specifically for its involvement in the war of 1812, as it was commanded by John Paul Jones. It was sank to the HMS Serapis and it is from this wreck, although …

PHORCYS UNDERWATER ACTIVITIES – EPISODE#98

PHORCYS UNDERWATER ACTIVITIES – EPISODE#98

“ROYDHOUSE” MANEUVER This is another equalization method that does not imply nose pinching. It is a variation of BTV, initially described by Noel Roydhouse, a New Zealand doctor. It is performed by constriction of the soft palate muscles in a way that the uvula moves upward and forward while at the same time, we move …

PHORCYS UNDERWATER ACTIVITIES – EPISODE#35

PHORCYS UNDERWATER ACTIVITIES – EPISODE#35

BLOOD IN THE MASK PART#02 A single episode of blood presence in our mask is definitely not the end of the world. Furthermore, if bleeding has stopped, it is not necessary to stop our diving activity. What is really essential is that we take measures after the dive, for the complete removal of the blood …

PHORCYS UNDERWATER ACTIVITIES – EPISODE#23

PHORCYS UNDERWATER ACTIVITIES – EPISODE#23

Rupture of the tympanic membrane Rupture of the tympanic membrane is not always accompanied by pain, feeling of a blocked ear, vertigo-dizziness or presence of blood in the external canal. The only positive way to establish the diagnosis is to perform a Valsalva Maneuver and hear the whistle of the air escaping the fissure.

PHORCYS UNDERWATER ACTIVITIES – EPISODE#41

PHORCYS UNDERWATER ACTIVITIES – EPISODE#41

BAROTRAUMA Barotrauma is defined as the tissue damage that results from the inability of the body to equalize pressure in a gas filled space (eg. pressure of air contained in the middle ear or a paranasal sinus with the ambient pressure). At sea level, pressure equals to 1 bar and rises 1 bar every 10m …