Limitations
The McCann bell suffers severe limitations in strong currents and when dealing with a pressurized submarine or one lying at extreme angles. It is also incapable of functioning below 850 ft (260 m). The USN Submarine Rescue Chamber (YRC) is air transportable to a Vessel Of Opportunity (VOO) Mother Ship (MOSHIP) which requires little modification to use the system. Transfer Under Pressure (TUP) to and from pressurized environments such as submarines or hyperbaric chambers is not possible with this system, even though TUP is essential where being subjected to ambient pressure may be life threatening. Since the creation of the Deep Submergence Rescue Vehicles Mystic and Avalon, the McCann Rescue Chamber is rarely used, but is part of the Submarine Rescue Chamber Flyaway System (SRCFS) which is capable of worldwide submarine rescue missions. Once launched, the SRCFS is able to operate around the clock.
Read more about this topic: Mc Cann Rescue Chamber
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