Rebreather Information Onboard the Odyssey Adventures by Marcelina


The Odyssey Adventures often caters for guests with rebreathers so if this is the adventure you are seeking for give us a call and we will get it organised for you!


We have successfully accommodated many rebreather divers onboard the Odyssey Adventures. The success in accommodating these divers is the result of careful advance coordination as to what the liveaboard operation can provide for the diver versus what the CCR (Closed Circuit Rebreather) diver needs to take with them. Although we have made efforts to make life easier for CCR divers, the Odyssey Adventures does not claim to be a rebreather friendly operation and they are also not familiar with any specific brands or models of CCR units.


Onboard the Odyssey Adventures you have access to sofnolime in 8-12 mesh 797 grade and 4-08 mesh CD grade. Sofnolime is ordered several months’ in advance so notice on requests for sofnolime is required to ensure availability on arrival. O2 is available onboard providing high pressure fills up to 99%. Some CCR systems are able to use the tanks provided onboard. Many systems are not able to use these tanks. For rebreather tanks the Odyssey Adventures have 2 liter (2 sets) with in-line valve and 3 liter (2 sets) with in-line valve. They also have 30 cft. tanks with standard K valves that can accommodate both DIN and yoke style fittings.


The current cost for a 44 lb (20 k) tub of 812 sofnolime is $220. The cost for a 44 lb (20 k) tub of 408 sofnolime is $180. The cost for O2 is $2 per cubic foot used to provide a fill. Please note this is an indication of price only.


The diving in Truk Lagoon can accommodate a wide range of skill levels. Different divers on the same site, at the same time, can each dive according to their individual abilities. Most of the wrecks are within the recreational diving depth limit of 130 feet. A few will have some portions of the wreck that are deeper but most of the wreck profile is shallower than 130 feet. It is not uncommon for a wreck to have its deepest depth at 130 feet and it shallowest depth at 30 feet. Most of the dive time in Truk Lagoon occurs in depths ranging from 50 to 100 feet. The technical part of diving in Truk comes more from wreck penetration than from depth. This is what allows the mix of skill levels on the dive sites. The novice diver can easily spend their time diving the outside of the wrecks with some light penetration of cargo holds and pilot houses. The technical diver can spend their time doing more extensive penetrations into engine rooms and other interior areas of the wrecks. A technical diver doing extensive penetration may find themselves incurring decompression requirements. On the other hand, recreational divers can enjoy long, shallower dives without incurring a need for decompression stops. Once during the week we try to schedule a side trip to the San Francisco Maru which is one of the few deeper wrecks in the lagoon ( 155 – 200 ft.). This dive is optional for those who are interested and qualified. During this dive the main boat will be at a different site to accommodate the recreational divers onboard.



For technical divers on the Odyssey Adventures double tanks can be provided (aluminum 80 cu. ft.) with dual isolation valve manifold and bands. Doubles accommodate DIN or yoke style regulator first stages. They also have single 112 cu. ft. steel tanks, DIN or yoke and 30 cu. ft. pony bottles with DIN or yoke valves that can be used for high O2 deco mixes. O2 for deco mixes at up to 100%, is available for a fee.




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