Team 7/70: Diving Deep on TRIMIX

Team 7/70 is a technical diving team based out Italy that is diving deep on Trimix. They recently dived on the Focke Wulf 58 in the lake, Lac du Bourget France, to depths of over 330 ft/100 meters. Not only is the wreckage of this place of historical significance but the training, equipment and preparation required to dive to these depths is paramount. Watch the video below from Team 7/70 on their expedition to the FW 58, a WWII Nazi training aircraft that crashed after an accident. Then check out the interview TXD had with Team 7/70 on their recent exploits. – Brian J

I understand you dive as a team and your name is Team 7/70? Can you explain a bit about how you came up with the name, what it’s like diving deep on trimix and introduce the team members.

FW 58 Lac Du Bourget - WWII Airplane Wreck in FranceWe come from different experiences and started diving together two years ago. The more we were diving together, the more we found ourselves being part of  a team. The name 7/70 comes from the diluent mix (we are all diving closed circuit rebreathers) we use for dives around 100 to 110 meters.

The aim of Team 7/70 is first to have fun together (we all like good food and amazing places) and dive on wrecks; that is our main diving passion. As a team we are always planning new dives and like to make exploration dives on deep wrecks.

The members of Team 7/70 are:

Denise Brusoni “Puma”
Emanuele Loglisci “Wolf”
Giuseppe D’ Urso “Beppe”
Enrico Bortolotti “The Mechanic”
Andrea Fattore “Faktor”
Roberto Strgar “Hammer”
Ivano Predari “Cave Spirit”

Do any of your team members have specific roles or responsibilities within the team; in other words, does on person charge the bottles and one person plan the dive and one person research new sites?

FW 58 Lac Du Bourget - WWII Airplane Wreck in France

Actually not. As a team we share the projects and work together on planning and preparation. Each members is giving the best support in function to their specific skills. Denise and Beppe are the official photographers, Enrico has a special DPV armed with powerful lights helping to take better pictures and videos and is also able to help repair broken equipment. Wolf is the “DIR side” of our team studying and proposing procedures to endorse safety. Hammer is the key person in regards to organization. Faktor is critical in keeping our spirits high and is able to make us laugh thanks to his jokes and moods. 

Out of the water Tiziana (Giuseppe’s wife) is our ground support and taking pictures when we all are concentrated in preparation. She has also a special hint for good restaurants!

What does the chain of command look like during the planning, preparation and execution phases of your dives?

FW 58 Lac Du Bourget - WWII Airplane Wreck in FranceEach member is responsible for preparing their own rebreather and bailout bottles according the shared diving plan. We use the same gasses in order to be able to share in case of an emergency. Then, we run an approved checklist before each dive. Hammer, with his powerful voice is calling off the checklist, but we are growing together and everyone is welcome to suggest improvements to ensure higher safety.

We have ambitious projects for the next year. We have already planned two days together out of water, just to discuss emergency procedures and how to manage at best communication underwater. For us, it is essential to not only be and act as a team underwater, but as well endorsing our mutual knowledge and friendship. We are driven by passion.

How did your team form, and how long have you been diving together?

The team came up by coincidence. Diving together, knowing each other and starting with a dive on U455, of course with 7/70FW 58 Lac Du Bourget - WWII Airplane Wreck in France as diluent. The good feelings together and will to do important dives together helped us to overpass the different vision on diving system and find a common way to do it without conflicts. This is the way of diving we love!

With regards to training, what agencies have you trained with and what are your levels of certifications to be diving deep on Trimix?

We are coming from different diving cultures and agencies. UTD, TDI, FIAS mostly. We all started training from deep air, normoxic trimix, then hypoxic trimix in open circuit and moved then to rebreathers. Rebreather diving made us meet.

Currently we are all Advanced Mixed Gas Rebreather divers, meaning we have achieved the maximum level. Enrico is also a Liberty instructor [on the Divesoft CCR Liberty; the same CCR Brian J of TXD uses] and Wolf is sharing some development project with FIAS on the technical side.

Where do you consider your home base for diving?

FW 58 Lac Du Bourget - WWII Airplane Wreck in FranceHaven wreck (close Arenzano in Liguria) is our home base! The biggest wreck in Mediterranean sea (250 meters in length, 80 meters max depth) is the wreck where we dive especially during winter and helps us to test and share the different solutions. Lights, pictures, procedures or wreck penetration and exploration! 

We always meet at Techdive, very well prepared and efficient diving center where we can fill our bottle with highest precision and meet Andrea Bada (owner) that is a passionate diver working hard to discover new wrecks.

How does team based diving change where and how you can dive? In other words, does team based diving allow you to reach greater depths and explore previously unreached dive sites?

We are all diving since many years and the “scuba world” is actually a small world. So we know more or less all the main diving centers and they have learned to know us and be confident when we organize deep dives. 

How about gear? I understand you dive Liberty CCRs, what made you select the Liberty over other models?

Actually in the team, we have three Liberty divers, three Megalodon divers, and one JJ rebreather diver. There is no restriction for anyone. Everyone is free to choose the equipment he prefers. We are passionate divers and have no sponsor; neither will to be linked to anybody. Free at all! That’s our spirit.

When it comes to drysuits we use different models but for long and deep dives we just moved to the new neoprene drysuits with thinner layer but better level of protection from cold.

On DPVs; two of our team are using Suex, another one is using Teseo. They become necessary when diving deep in rebreathers with 3 or 4 bailouts.

Your mix, 7/70; do you dive with that mix most often? What made you select that mix?

7/70 as mentioned is ideal mix for dives at 100/110 meters, giving a PPo2 0.7 on the bottom. In the team, at beginning some member were “younger” from CCR certification point of view. Being able to use this hypoxic mix was a dream and point of arrival, allowing us all to join together on deep dives like the wrecks UJ2208 or Nina.

Can you explain a bit on the preparation work that went into diving the FW58? How did you hear about this particular site? What special gear (travel mix, stage bottles, DPV, etc) did you need to employ to reach this wreck?

We decided approximately one year ago to dive on FW58. All of us have heard about and wanted to do it. We have studied the wreck, the site and taken contact with the diving center Plongee Com’Aix to support us. It has taken a long time to organize the logistics and planning but again a common work made it possible.

For this dive we have used our best mix 7/70 of course! And min 3 bailouts each (12/70, 21/40, 50/20) and oxygen. Furthermore on the line we had safety bottles and agreed with Lionel (owner of diving center) the procedures to be adopted in case of need for assistance. However, we know we have first to solve any possible issue underwater, and that is why we are constantly training.

The FW58 is probably the most well preserved wreck of WWII and we strongly wanted to dive there and take good pictures and videos for our memories and why not, give possibility to join this beautiful privilege with all non-divers interested.

As for your team; what other notable expeditions have you done in the past? What’s the plan for the future?

We already made a lot of dives together. Like U455 in Genova (120 meters depth), UJ2208 (107 meters) Nina (115 meters), or deep dives in Northern Italian lakes (that is why we were well prepared for the freezing temperatures of Lac Bourget), and many others. Pictures and videos are available on our Facebook or Youtube. Three members of the Team (Hammer, Puma and Enrico) also were part of the Expedition on Britannic wreck in Greece of last October. Actually, Denise is the third woman ever that dived on Britannic.

We have three main projects for next year, but we prefer to keep the secret and give you news once done! 

To learn more about Team 7/70, you can visit Roberto Strgar’s YouTube Channel, Roberto’s FaceBook, Denise Brusoni’s FaceBook, Enrico Bortolotti’s FaceBook, Andrea Fattore’s FaceBook, Emanuele Loglisci’s FaceBook, or Lionel Canonage’s FaceBook.

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