Full Face Mask for Use with MK 16 UBA

摘要

This study served to evaluate full face masks (FFM) for use with MK 16 UBA. The five masks evaluated were separated into two groups based on capabilities of the masks. The first group included the British FFM, AGA Closed Circuit FFM and the Cressi-Sub FFM, all of which are non-developmental masks currently in use by various units world-wide. These masks simply provide facial protection (thermal and environmental) to the diver. The exception being the AGA FFM which can be modified to allow a divers communication system. The second group consisted of the AGA OC1 open/closed circuit switchover mask and the AGA FFM frame and rubber skirt incorporating an open/closed switchover mechanism developed by NCSC, Panama City, Florida. Both of these masks afford not only the inherent protection of a FFM, but also the capability of diver-to-diver, diver-to-surface communications and a safer more reliable method of providing emergency breathing gas to the divers. The Cressi-Sub FFM is recommended for immediate use as an alternative to the standard mouthpiece configuration with the MK 16 UBA where thermal or environmental protection is a requirement. Keywords: Underwater breathing apparatus; Diving equipment. (kt)