Tuesday, October 8, 2013

REPOST: Spectacular pictures show daredevils diving in for the ultimate thrill of swimming inches from 40-tonne whales

This article from Daily Mail features stunning photos of divers swimming with huge whales, as well as insights from one of the divers.

Swimming next to 40 tonne whales, dare-devil divers take the plunge with these gentle giants of the sea.
The amazing photographs were captured by an underwater diving company while out exploring the ocean in Tonga.

Deep sea swim: Swimming next to 40 tonne whales, dare-devil divers take the plunge with these gentle giants of the sea. Image Source: www.dailymail.co.uk
Scott Portelli, 41, manager of Swimming with Gentle Giants, said: 'I have been swimming with whales in Tonga for over 12 years.

'It's hard to describe a feeling, but from a visual perspective, we are in a vast blue environment with a 40 tonne, 18 metre long whale.

'Whales are the gentle giants of the sea and humpbacks specifically are the most charismatic, they are curious and will often seek out interactions with humans.
'I never feel in danger even though they have the ability to swipe me like a fly with their enormous tail if they wanted, but they are so thoughtful conscious of your space they will manoeuvre within inches of you.'

Image Source: www.dailymail.co.uk
As well as whales, other underwater life such as dolphins, manta rays, turtles, blue marlin, sharks and seals occasionally pop along to enjoy the experience.
Mr Portelli added: 'People have come out of the water in tears after being in the water with a whale; some cry with joy and amazement, and some just can't speak as they take in the experience.
'It is clear that its life changing for anyone that swims with a whale, their perspective changes, and swimming with whales is addictive, I have so many returning guests each year.
Life of luxury: Scott Portelli, 41, manager of Swimming with Gentle Giants, said: 'I have been swimming with whales in Tonga for over 12 years'. Image Source: www.dailymail.co.uk
'My simple aim is to raise awareness of these beautiful animals.

'The Japanese hunt 1050 whales every summer, but there is no reason for this lethal form of research.

'It is great being around like minded people as well as being able to bring joy to people that experience the whales, I couldn't imagine doing anything else.'

Phil Newsum is an advocate of commercial diving.  He serves as the executive director of the Association of Diving Contractors International, Inc.  Visit this Facebook page for more articles about diving.

Friday, September 27, 2013

REPOST: Underwater Scan Finds Significant Heart Changes in Divers

The Wall Street Journal’s Anne Lukits reports about a test that can be used to identify divers with undetected cardiac abnormalities which can put them at risk during a dive.
Image source: After the dive: The volume of the left ventricle, a lower heart chamber that pumps newly oxygenated blood to the body, increased significantly, while the flow of blood into the ventricles decreased.
An underwater ultrasound scan of scuba divers’ hearts found significant changes in cardiac function during and after a dive, according to a small study in the journal Acta Physiologica. The test could be used to identify novice scuba divers with undetected heart disease or cardiac abnormalities that might prove fatal during a dive, researchers said.
Scuba diving is growing in popularity among older Americans and heart attacks and unknown heart rhythms are the most common cause of diving-related deaths after age 40, according to the Divers Alert Network, a nonprofit research group.
The study, conducted in Italy, involved 18 scuba divers, including 16 men and two women. The participants were about 42 years old and each had made at least 100 dives. None smoked or had hypertension, heart or lung disease.
Cardiac-ultrasound tests were conducted on land before and after diving, and underwater at two depths. The divers wore suits with access for an ultrasound probe and maintained a kneeling position for 10 minutes at a depth of about 33 feet, then five minutes at 16.4 feet.
Among the heart changes recorded during and after the dive: The volume of the left ventricle, a lower heart chamber that pumps newly oxygenated blood to the body, increased significantly, while the flow of blood into the ventricles decreased. These changes may be due to a diving-related shift of blood from the lower extremities to the upper body, exerting a constrictive effect on the chest, the researchers said.
Bradycardia, the term for a slow resting heart rate, a condition that can cause dizziness and weakness if the rate falls below 50 beats per minute, was documented after but not during the scuba diving. The cardiovascular changes that occur during immersion may increase the risk of cardiac problems in divers who are unfit, overweight or have underlying heart disease, researchers said.
Caveat: Heart rate may have been higher underwater because divers were disturbed or stressed by the ultrasound tests, researchers said.
Regular health check is one of the safety protocols in diving that professionals like Phil Newsum advocate. For regular updates on commercial and leisure diving, subscribe to this Facebook page.

Friday, August 23, 2013

Diving deeper: Life in a saturation chamber

Saturation diving requires divers to remain in a pressurized chamber for days on end to allow their bodies a considerable amount of time to become adapted to the high-pressure environments of the deep. This has the advantage of allowing them to decompress at a much shorter span of time than if they were to make repeated dives at great depths.

Image source: Best Diving


Saturation chambers called deep diving systems (DDS) allow divers to remain in an underwater setting for multiple days, even weeks at a time. These serve as a pressurized temporary home for the divers, and contain all the necessary facilities to keep the divers alive and comfortable throughout their stay, including toilets, sleeping quarters, a built-in breathing system, a medical facility, tables, and chairs. Food and water are sent down through the system by vault.

Image source: The Underwater Centre


Divers go in and out of the DDS through a personal transport with a pressure similar both to the outside and inside the DDS. Each of the personnel in the transport take turns accomplishing a task.

Image source: Oceangate

A team of six divers can live continuously in the DDS for a month, with at least one diver in active duty at any given time. This is far more time-saving than conventional diving apparatuses due to the amount of decompression time that has been condensed.


Phil Newsum is with the Association of Diving Contractors International, a regulatory organization committed to upholding safety practices in commercial diving. Get updates on the Twitter.



Monday, July 22, 2013

REPOST: New safety support in place for deepsea divers

The safety of divers, especially those involved in subsea industrial work, is a top priority for diving contractors. The Telegram’s Ashley Fitzpatrick writes about a facility that addresses emergency response and worker safety for offshore divers.

The Hyperbaric Reception Facility (HRF) is the only shore-based HRF in North America.
(Image source: thetelegram.com)
 
Companies using divers for subsea industrial work offshore Newfoundland and Labrador now have access to a rare facility to support emergency response and worker safety.

The new hyperbaric reception facility was built by Submarine Manufacturing and Products Ltd. in the United Kingdom for local company Sea-Force Hyperbaric. It can accommodate up to 20 divers for decompression, in the case of a catastrophic incident offshore.

Offshore divers go deep, typically living in sealed chambers onboard a diving support vessel for up to 28 days at a time. They transfer from the vessel to a pressurized diving bell to head out to work.

The deep diving is called “saturated” diving because, under the pressure, gases are absorbed into body tissues, and the tissues become saturated with the gases. The absorbed gas has to be released slowly after the dive.

Safe decompression typically takes about four to six days.

“Every year now, there’s a diving ship here every single year and when they’re here, they’re here for probably six months and there’s guys in saturation diving 24 hours a day during the six months that it’s here,” said Sea-Force Hyperbaric’s Jim Hynes.

The workers have access to hyperbaric lifeboats, but they are generally cramped spaces with divers having limited ability to move or deal with injuries during decompression.

Enter the “hyperbaric reception facility,” stationed inside the large, blue building at the NewDock yard off Water Street, near the St. John’s waterfront.

Now, in an emergency, divers’ lifeboats can be brought to land and — like a space shuttle docking with the International Space Station — be placed atop the T-shaped facility. It allows workers to escape into a somewhat more spacious, still pressurized, area with potential for more direct medical care.

The safety business

The hyperbaric facility is under private ownership. Sea-Force Hyperbaric has had help in startup from several sources.

According to online records, the federal government, through the Atlantic Canada Opportunities Agency (ACOA), contributed $50,000 to a feasibility study for the hyperbaric business in December 2011. In April 2012, a separate $500,000 loan was approved by ACOA for the business.

The provincial government contributed $500,000 for the purchase.

“The other over $4 million we got ourselves,” said Sea-Force’s Hynes, placing the grand total at more than $5 million.

As a business, he said, Sea-Force Hyperbaric plans to sustain itself by establishing stand-by contracts with diving companies and major offshore operators.

“The investors here went out and saw an opportunity and sort of got ahead of the curve and recognized there was a need from a health and safety point of view,” said Innovation, Business and Rural Development Minister Keith Hutchings after seeing the facility at a reception Wednesday.

The facility is portable, allowing the company to pursue contracts elsewhere in the world as well, whenever there is a lull in dive work offshore Newfoundland and Labrador.

Emergency response

There have been divers killed while working offshore Newfoundland and Labrador.

At least three lives were lost during attempts to move the remains of the Ocean Ranger following the loss of that rig.

At the time of the Hebron public review, The Telegram contacted the Canada-Newfoundland Offshore Petroleum Board, requesting information from the standard forms to be submitted by companies to the offshore regulator in the event of an accident or near miss during dive work offshore.

For the 10 years prior to 2012, there were 23 reports and the incidents ranged from a diver reporting dizziness, to objects dropping onto the seafloor in divers’ work area. In one case, a crane’s headache ball was “lowered to the seafloor within five metres of the divers without divers’ consent.”

Of note, saturation diving work will be required for installation of the Hebron gravity base structure.

Phil Newsum of the Association of Diving Contractors International (ADCI) champions diving safety, whether commercial or recreational. Get timely updates on diving from this Twitter account.

Sunday, June 9, 2013

The thrill of free diving


Image source: gapinternshipsthailand.com

Considered an extreme sport, free diving relies solely on the diver’s ability to hold his or her breath rather than using a breathing apparatus such as a scuba gear. The sport is growing in popularity these days. Unknown to some, free diving has existed for hundreds of years that “Homer and Plato [even] wrote about it,” reports 60 Minutes .

For those who chose to take up the extreme sport, the beauty of free diving lies on conquering “death-defying feats” never thought possible. As Alexander Davies of Discovery News pointed out, “Divers push the limits of human evolution by descending hundreds of meters below the surface, fighting massive levels of water pressure and minutes without oxygen.”


Image source: enzomaiorca.it

The 50-meter mark was first breached in 1962 by Enzo Maiorca. Fourteen years later, Maiorca’s fiercest rival, Jacques Mayol, hit 100 meters. And as the sport developed, divers started incorporating fins, weights, inflatable balloons, and diving sleds, going even deeper. According to the International Association for the Development of Apnea (AIDA), an organization established in 1992 to set global standards and verify free diving records, the deepest dive record set was 273 meters by Goran Colak in 2011.

A lot of people may ask, “Why go down at all knowing how extreme the sport is?” For some enthusiasts though, they do not see free diving as an extreme sport – they see it as a adventure. As champion free diver Tanya Streeter explained to 60 Minutes’ Bob Simon, “It is journey of self-exploration.”


Image source: news.com.au

Phil Newsum believes that safety should always be a priority in diving, whether free, or commercial. Select updates about the diving industry are available at this Facebook page.

Friday, May 3, 2013

Making fish of men: Where are artificial gills?

Image Source: zidbits.com

There’s a certain amount of god-playing when humans deign to stay underwater for days. But to developers of artificial gills, this is a practical solution for both an economy and a scientific world that are pushing submerged explorations into deeper reaches.

USA divers, in particular, welcome this breakthrough as sea-borne job opportunities multiply. The country also prides itself in hosting an extensive network of divers who participate in marine contracting and non-profit services such as search and rescue operations for coastal disasters.

Diving has a strong hold in this country, with non-profits like Phil Newsum’s Association of Diving Contractors, International (ADCI) participating with federal agencies in a gamut of diving-related operations. One of the most compelling arguments for funding the invention of artificial gills may be search and rescue operations, such as that ADCI had to lead in Minnesota, following the collapse of a highway bridge into a river. The agency has a wealth of stories to tell its frequent partners, the U.S. Coast Guard and the Department of Labor, about long-haul diving operations.

Image Source: businessweek.com

Artificial gills broke into the scientific imagination back in 2006, when ”LikeAFish”, an Israeli inventor’s pet project, made headlines. The aptly named invention harvests oxygen from water through a closed-circuit system that pumps breathable gas in an airbag, a more ergonomic departure from the clunky oxygen tank.

This is the first viable model for artificial gills for which the inventor, Alon Bodner, sought patents. The U.S. military took no time to swim in the idea by taking Bodner’s concept for a run of other designs while retaining the battery-powered and airbag-facilitated mechanism of the invention. The device has also been baptized as “Microfabricated Biomimetic Artificial Gill System” or MBAGS, which could subsequently rearrange the SCUBA acronym into “self-contained open-circuit breathing apparatus.”

Image Sourge: spiegel.de

If all goes well, artificial gills are set to conquer commercial markets in this decade. Bodner’s invention had been given around 10 years since its inception to survive the testing channels and be adopted for commercial use. At least, this soaks sci-fi expectations that artificial gills will break out from the sides of the human neck.  


Phil Newsum is one of the most reputable divers in the United States aiding marine operations and providing divers’ training through his leadership of ADCI. More commercial diving information could be found here.

Wednesday, April 10, 2013

Underwater archaeology leads to worlds movies are made of

Underwater archaeology has the makings of a ruse. Archaeological sites demand prolonged surveys and excavations. Gathering fossils and artifacts could be an endless search. These operations will be cut short underwater, within the span of human breath. And while scuba gear stretches possibilities in netherworlds, it also has its limits.

Image source: newswatch.nationalgeographic.com
Still, it’s a promising method that tracks history where it passed. Submarines and remote sensors could be deployed for more explorations, but these could not replace that moment of pure scientific insight that connects clues and artifacts to each other. Human discernment, first of all, points out “submerged cultural resources”. These are sites bearing the imprints and other evidence of humanity’s existence. Shipwrecks, geological formations, and historical remains of monuments are examples.

Image source: guardians.net
Despite its risks and logistical constraints, underwater archaeology is regularly practiced. It has been a great service in bringing to surface prehistoric upheavals, such as early migrations to the New World and bygone maritime cultures in Northern Europe.

Shipwrecks are easy points of interest. The muted splendor that surrounds sunken vessels and battleships is of a cinematic quality that writes its own screenplay. It is not by accident that James Cameron imagined a love story and a billion-dollar remodeled ship after hauling Titanic up for air. The sea’s detritus has a way of preserving secrets of the past and lending an aged kind of romanticism to how historians interpret it.

Image source: unesco.org

Underwater archaeology naturally demands scuba training. Most archeologists who have been involved in land digs contend with this problem when the historical trail leads them underwater. Phil Newsum and the Association of Diving Contractors International can assist in training, particularly in deep sea diving. For more information, visit this Facebook page.