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Posted by on in Wrecks

At 9 foot long, not including the tail, tiger shark (Galeocerdo cuvier) Harry Lindo is not exactly on the small side.  It’s not Harry’s size that is exciting scientists and shark enthusiasts, nor a photograph taken in 2009 by Ian Card showing a shark – suspected to be Harry, trying to eat a 150 lb juvenile tiger shark off the coast of Bermuda.  Between 2009 and 2012 researchers tagged 24 tiger sharks with satellite transmitters in the Challenger Bank, which lies just off Bermuda in the Atlantic Ocean.  In study lead by James Lea (The Guy Harvey Research Institute, Nova Southeastern University Oceanographic Center) and team of international collaborators, those shark movements have been compiled and analysed.  Harry, it turns out, is one heck of an ocean wanderer.  In just over 3 years Harry swam over 44,000 kilometres – that’s more than the circumference of the Earth (just over 40,000 kilometres).  Harry’s track is the longest recorded for a tiger shark, and probably the longest ever published for any shark species.

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Sherwood TA 150722 ‐ 9000 Series 2nd Stage Upgrade KitTECHNICAL ADVISORYDATE: July 27, 2015SUBJECT: 9000 Series 2nd Stage Regulators – Upgrade KitChanges have been made to the 9000 Series 2nd Stage internal valve components to improve the performance of the Poppet, Seat, and Orifice. These changes address the possibility of an improper seal that may develop in the 2nd stage due to either an orifice damaging the seat, or tolerance deviations that may allow for slight misalignments of the poppet to the orifice. The changes to the components are as follows:1.       Orifice: The sealing edge is slightly more rounded so it is less likely to damage the seat;2.       Seat: Now made of a slightly higher durometer to increase toughness and has an improved fit into the Poppet;3.       Poppet: The ribs have been extended all the way to the seat to improve the alignment to the orifice;These new parts are contained in an Upgrade Kit that will be provided by Sherwood Scuba at no cost, but only for the Sherwood Octo (SR9902), Brut, Magnum, Oasis, and Blizzard 2nd Stage Regulators that were produced from June 2013 through December 2014.Eligible units must be within this serial number range: 13020401 – 14124477The serial number is found stamped into the 2nd Stage housing. Please do not confuse this number with the serial number marked on the 1st Stage Regulator. Sherwood TA 150722 ‐ 9000 Series 2nd Stage Upgrade KitIf you have a 2nd Stage unit within the above serial number range that is displaying a small leak you cannot solve through a normal service and is within its normal service period, contact your Sherwood Scuba Distributor for an Upgrade Kit and perform a standard service overhaul.The Upgrade Kit contains a new two‐color Mouthpiece with Tie Strap so that the 2nd Stage can be visually identified as upgraded. The Kit also contains a new Thrust Washer so that any upgraded 2nd Stage will be fully up to date.Only one Upgrade Kit will be supplied for each 2nd Stage regulator. All Parts will retain the same part numbers except for the new two‐color Mouthpiece. All 9000 Series 2nd Stage Regulators built after January 2015 already contain the new upgraded parts and therefore are not included in the eligible serial number ranges.These regulators will have the new two‐color Mouthpiece installed to easily identify them.If you have any questions regarding the Upgrade Kit, please contact your Regional Sherwood Scuba Distributor for assistance.

 

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Simon Ager/Sea Shepherd Australia

Simon Ager/Sea Shepherd Australia

The captain of the MV Thunder didn’t go down with his ship. Instead, he stood cheering and applauding in a life raft as the 62-m fishing trawler sank beneath the glassy surface of the Atlantic, 200 km off the coast of Gabon. Then he and his crew of 40 meekly allowed themselves to be rescued by the boat that had been pursuing them for 110 days.

It was a bizarre finish to the world’s longest maritime pursuit, one that began in the icy waters off Antarctica last Dec. 17, and ended on April 6, practically on the equator, near the tiny islands of São Tomé and Príncipe, some 19,000 km away. Reports suggest that the captain of the Thunder—a notorious pirate fishing vessel that had changed its name and flag at least three times in recent years—deliberately scuttled his vessel, although he claims he was hit by a passing cargo ship. It makes little difference. The activists from the Sea Shepherd Society had made their point: that they were willing to go to the very ends of the Earth to protect the Patagonian toothfish.

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Since I’ve scuba dived as many times as I’ve bungee jumped in a leotard (not very many, if you’re wondering), I took a deep breath and tapped three regional experts for tips on where to go in Canada – starting with Russell Clark from the Dive Industry Association of British Columbia.

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Posted by on in Wrecks

A little more than 238 years ago, our forefathers used the best technology available to inspire colonial proto-Americans to revolt against the King of England. At that time, the “best” technology available was the printing press and the “best” social network required the use of “word of mouth” in Public Houses. Grog (small beer) was the lubricant that facilitated this communication and the rest, as they say, is history.

But while all this was going on, there were a bunch of entrepreneurs and a few startups that changed the world. In the 1770s, America was a relatively low tech, agrarian society, but as you can see from the list below, all that was about to change. So here, for your Independence Day reading pleasure, are the seven hottest tech trends circa 1776.

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U/W Bike Race

eventsiconJoin us on July 4th for this annual event benefitting the Children's Mile of Hope.

Lionfish Roundup

eventsiconAn exciting partnership between Discovery Diving, NOAA, and Carteret Community College.

Treasure Hunt

eventsiconFood, prizes, diving, and fun! Proceeds benefit the Mile Hope Children's Cancer Fund and DAN's research in diving safety.

ECARA Event

2013Join us March 7, 2015 at the Bryant Student Center, Carteret Community College, Morehead City in support of the East Carolina Artificial Reef Association.  Click here for more info on this great event and how you can help to bring more Wrecks to the Graveyard of the Atlantic.