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Beyond the surface
66 members • Free
4 contributions to Beyond the surface
4h •
Underwater Plasma Cutting
Hi, I wonder if underwater plasma cutting is sometimes used in your country?
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Dec '25 •
INCIDENT CASE STUDY: When Production Pressure Kills Safety Culture
Date: 10 December 2018 Location: Las Palmas, Gran Canaria, Spain Company: Otech Marine Services Client: Diamond Offshore Project: Ocean Great White - Thruster Anode Welding Incident Type: Type 2 Decompression Sickness (Vestibular Bends) Outcome: Diver airlifted to Tenerife for hyperbaric treatment THE INCIDENT A commercial diver suffered Type 2 DCS with vestibular symptoms (severe dizziness, balance loss, ear pain) after a 56-minute bottom time at 60ft. Within 10 minutes of surfacing, the diver reported symptoms. What followed was a textbook example of how NOT to manage a diving emergency. THE SETUP: Recipe for Disaster Aggressive Schedule Dive Tables Used: USN Rev. 7 at 60ft/63min What Should Have Been Used: Norwegian tables (more conservative) Reality: Diver had completed 5 consecutive days of hard repetitive diving Red Flag: No formal deviation request submitted for using non-Norwegian tablesThe Dive Profile (Last Day) Date Bottom Time Surface Interval Max Depth Table Used 05.12.18 38 mins N/A 16.6m 18.3/63 60/63 06.12.18 38 mins 38 hrs 18 mins 13.5m 15.2/92 50/92 08.12.18 57 mins 26 hrs 56 mins 17.4m 18.3/63 60/63 09.12.18 24-45 mins 24 hrs 45 mins 17.6m 18.3/63 60/63 09.12.18 56 mins 19 hrs 34 mins 17.6m 18.3/63 60/63 Bottom line: This diver was being pushed to the absolute limit, repeatedly. THE CRITICAL FAILURES 1. REFUSAL TO RECOMPRESS IMMEDIATELY What Happened: Diving Supervisor decided AGAINST using the onsite DDC Reason given: "Faulty O2 analyzer - can't control O2% in chamber" Diver left breathing surface O2 instead Why This Was Wrong: Treatment Table 6 requires recompression to 60ft IMMEDIATELY O2 analyzer failure does NOT prevent chamber use Could have vented chamber and topped up with fresh gasEvery minute delayed = increased risk of permanent injury The Expert Opinion: "We should have used the Otech DDC immediately (treatment table 6) with direct communication with the hyperbaric doctor and not wait for the ambulance and the Hyperbaric facilities of the island because Lewis had obvious neurological signs and
1 like • 6d
Derek, many thanks for providing the Deep X document, which contains more information than the OTECH report. Thanks to it, I was also able to draw this new and more accurate dive profile, where we can now clearly see the series of yo‑yo movements up to the top of the thruster, as well as the brief incursion to 18.80 m that Lewis made to help diver 2 avoid going deeper. Indeed it is therefore clear that in this case the supervisor should have used the 70‑ft table, even though this descent to 18.8 m lasted less than one minute.
10d •
Nuke Diving
Hi, a French woman was recently certified as a nuclear diver. I know that there is (or was) Kyra.R in the United States as well, but I’m wondering how many other women around the world are doing this type of diving. Do you have any idea? (photo F.H)
2 likes • 9d
To the works that are mentioned in that document, I can also add the next: Research of micro-leaks – Patch welding – Spool pieces replacement – structures dismantling – accurate metrology – etc. But before being admitted to work in a nuke plant, the diver will have (at least over here) to follow a few weeks’ courses (5 if I remember well) to learn everything about nuclear in order to work safely.
Dec '25 •
📌 GENERAL DISCUSSION - "START HERE"
Title: 👋 Welcome to Beyond the Surface - Start Here! Welcome to the community! I'm Stu, and I've spent 20+ years working offshore across commercial diving, ROV ops, rope access, and NDT. I built this space to give aspiring divers the honest truth about the industry - no diving school marketing BS. Quick Navigation: 📊 Free Tools (Classroom tab): Salary Calculator - See what you'll ACTUALLY earn Training Budget Calculator - Real costs, not school brochures Offshore Packing Checklist - Don't forget anything Physics Calculators - Dalton's, Boyle's, Buoyancy, Gas Management 💼 Jobs Board - Active diving positions posted weekly 🎓 Training & Courses - School recommendations, what to avoid 🛠 Equipment & Gear - Kit discussions from people who actually use it 📈 Career Advice - Salary negotiations, CVs, interviews 🆕 New Divers - Start here if you're brand new to the industry Community Rules: 1. Be respectful - we're all here to help each other 2. No diving school spam or affiliate links 3. Share honest experiences - the good and the bad 4. Search before posting - someone might have already asked 5. Use the right category for your posts Drop a comment below introducing yourself: Where you're based Where you are in your diving journey What you're hoping to get from this community Welcome aboard 🌊 💼
2 likes • 11d
Hi Stu, I’m happy to join this new community and I wish it to have the same interesting discussions that we had for more than 2 decades on the longstreath forum.
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Active 4h ago
Joined Jan 28, 2026