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This is a collection of my blog entries and experiences with diving.
You can find all the pictures I've taken here, and read below for recountings of my more recent trips:

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2015/07/20 Submarine Rides in Cocos with DeepSee Sub
π 2015-07-20 00:00 in Diving



As part of our trip on the Argos in Cocos Island, we signed up for 2 dives on the onboard sub from DeepSee submarine that is part of the boat (although sub dives do cost extra :) ).
The sub is a 3 person sub (pilot and 2 passengers), has 3 different battery systems, and the equivalent of a rebreather system for the cabin to give occupants breathable air for 3 days in case of emergency. While it has full freedom of movement, it's not very fast for horizontal trust, so it gets towed by the surface boat which also keeps constant comms (both voice and telemetry). The cool thing is that they can send location to the sub underneath by locating it compared to the boat's GPS location using sonar.

After arriving Cocos on the Argos and doing some dives on the first day, the second morning we went for our first dive to 100 meters. The whole thing was almost 2H.
A few pictures below:

Diana, our pilot
Diana, our pilot

the surface boat crew supervised the sub going down and back up
the surface boat crew supervised the sub going down and back up



it was bullying us, even though we were bigger :)
it was bullying us, even though we were bigger :)

distortion made it looks like it jumped inside (not photoshopped)
distortion made it looks like it jumped inside (not photoshopped)

some hammerhead sharks buzzing us
some hammerhead sharks buzzing us


back from the first dive
back from the first dive

A few short clips from my camera:

And a 6mn summary of the whole thing taken from my gopro (feel free to skip forward inside it, it's not action packed :) ):

The next afternoon, we went back for a longer 3H+ dive to 300 meters. We got lucky to see Rays swimming around us during the dive, and had a peek at the ocean bottom and the critters that live there in virtually no light:




200 meters deep
200 meters deep

300 meters deep
300 meters deep

rays were checking us out during a good part of the dive
rays were checking us out during a good part of the dive

deep sea crab working in mostly dark seas
deep sea crab working in mostly dark seas

Here are some videos of the rays going around us during the dive:

And 7mn summary of the 3h dive:

So, my impressions?

  • It's obviously an experience in a lifetime, not many people have gone to 300 meters under water
  • As a geek, of course, I could not but be impressed with the sub. It's super cool see it work, especially if you think about the geolocation technology, marine com technology, and how it can even know how it's moving compared to the ground thanks to 4 sonar pings going down and using the doppler effect on the returning signal.
  • Taking pictures was difficult because the dome acts as a big prism that splits light colors and makes all pictures somewhat blurry, especially if you try to zoom. The one exception are pictures you're taking without external lighting (mostly pictures above you) which since they're mostly blue, don't have the light splitting problem and look nicer.
  • And the crew was fantastic
  • Definitely glad we got to do this:



    And again, you can read about our diving trip on Argos in Cocos Island.


    More pages: April 2016 January 2016 July 2015 May 2015 January 2015 October 2014 June 2014 May 2014 January 2014 November 2013 February 2013 September 2012 June 2012 January 2011 September 2010 August 2010 May 2010 August 2009 January 2009 August 2008 February 2008 January 2007 November 2006 October 2006 January 2006 September 2005 August 2005 June 2004 January 2004 July 2003 January 2003

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