Random Jottings
Bubble shunting without a PFO
When my PFO was being diagnosed Dr Turner discussed another mechanism which was effectively 'unfixable', IPAVA (Intrapulmonary Arterio-Venus Anastomoses) are much more widespread than you may think and may be the cause of more 'undeserved hits' than you think!
Without much more ado here is the link to the article:
http://www.trero.org/single-post/2016/12/28/Why-You-Want-to-Stay-on-Your-Loop-AFTER-the-Dive
It makes interesting reading, more so for guys and gals who rack up deco on longer technical dives.
Dive safe
RichW
Latest Photographs


Bits of MV Yewglen wedged and jammed into the Little Rock
Maybe not totally original but having bullied the crab I pushed my torch inside the barrel of this gun..............
A very large, well the largest that I have ever seen Common Octopus (Octopus vulgaris), I knew that there was a big occie about as there is a noticeable 'lair' with loads of smashed edible crab parts, the trouble is that inside their hidey holes there is nothing to see.
and closer.....
A shot of the sea-bed in about twenty five meters off the Harcarrs, its all flat rock, small gravel beds and short drop offs.
Is it a Lesser Spotted Dogfigh.......or a Small-spotted Cat-shark? At least the scientists agree that it is Scyliorhinus canicula
The horizontal boiler, again quite good condition, I assume that its relative depth saves it from most of the pounding damage
I wonder if it was silver plated like 'Bonny Bobby Shaftos'?
This waterlogged piece of wood, which I think had been a fence post was covered in hard pink coraline and very 'pretty', once underwater it doesn't take long for detritus and junk to be absorbed into the eco-system
More identifiable bits, the steam powered windlass that was mounted near the bow, the main steel mast in lying to the left (North) up and onto a reef and there are bits of bollard and the like adjacent.
A view of conditions with the sea smashing onto the end of Seahouses golf course, this storm really changed wreck topography on North facing sites with Yewglen hugely bashed about and changed
And the business end of the same gun, in this case a crab has set-up shop but most of the time they are home to conger eels!
And in colour, not as much 'Scream' like but you get the idea!
The ships were built for speed, with plates rivetted together, the rivets will have been made from a softer material with less cobalt/manganese so have rotted away leaving rows of holes and allowing the paltes to start slipping.
The 'hump' of anchor chain
Looking from the 'end' of the first reef out to sea. There is a band of sand then another line of rocks and reef
Skylights rather than portholes but it would be nice.....wouldn't it!?!