UK technical diving instructor-trainer Will Goodman has claimed a new CCR depth record with a dive to 290m using an unmodified JJ closed-circuit rebreather.
Goodman reported that his computers stopped registering at 290m, but estimates that his actual depth exceeded 300m.
Goodman, who runs Black Water Tek, was previously recognised as Guinness World Record-holder for the longest scuba dive, carried out the JJ-CCR dive at Lombok in late March, following a years training and preparation.
The diver surfaced on 26th march 2014 after nine hours and 57 minutes, showing no signs of decompression illness or dehydration.
It was the toughest and most challenging environment I have ever been in, he said. I reached the bottom after a nine-minute freefall in absolute darkness. Water temperature at depth was 10° and a strong current was running.
I had high narcosis due to the nitrogen levels in my breathing mix, and HPNS (whole body tremors) from the amount of helium in the mix contributed to by the rapid descent rate.
My hands started shaking and, on ascent, I wondered if Id make it back, as I began to lose my motor function.
I cant thank the team enough for this amazing opportunity and all their hard work, Goodman added.
Although not recognised as an official Guinness World Record, because Guinness has no CCR depth-record category, Goodman can claim to have bettered a previous depth record of 283m set by Krzysztof Starnawski.
Blue Marlin Dive Gili Trawangan provided support for the dive, while OThree supplied exposure protection and Liquivision the computers.
FAQs
Who is Will Goodman, the UK diver claiming the CCR depth record?
Will Goodman is a UK technical diving instructor-trainer who runs Goodwilldiving in Lombok, Indonesia and is a former Guinness World Record-holder.
What depth did Will Goodman reach on his JJ-CCR dive?
He reported a depth of 290m on his dive computer but estimates he exceeded 300m, setting a new unofficial CCR depth record.
Why isn’t this CCR depth record recognised by Guinness World Records?
Guinness currently has no category for closed-circuit rebreather (CCR) depth records, so the dive cannot be officially certified by them.
What challenges did Will Goodman face during the 290m CCR dive?
He endured darkness, cold temperatures, high narcosis, helium tremors (HPNS), strong currents, and nearly lost motor function on ascent.
Who supported Will Goodman’s CCR depth record attempt?
Blue Marlin Dive Gili Trawangan provided logistics, OThree supplied exposure protection, and Liquivision provided the dive computers.
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