PHYSIOLOGICAL EVALUATION OF THE BRITISH MARK VII SUBMARINE ESCAPE IMMERSION SUIT DURING IMMERSION
NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT
Pagination or Media Count:
This study determines the general performance and survival time afforded by the British Mark VII Submarine Escape Immersion Suit SEIS, in 29 degrees F. water, 10 degrees F. air, and 20 MPH wind speed. It was found that the British suit did not provide the 24-hour estimated survival time at the severe conditions listed above, and the four subjects were taken from the water after an average time of 2.8 hours of exposure. Damage to the hands and feet would probably occur between 5.1 and 9.1 hours. Death would probably occur after 5.6 to 24 hours of exposure. Tests were also conducted in 90 degrees F. water and 85 degrees F., in still air. These tests indicated that no major problem will be encountered under these conditions. The environmental conditions were then changed in a step-wise fashion from 29 degrees F. water, 10 degrees F. air, and 20 MPH wind, until 24-hour estimated survival time was obtained. At 44 degrees F. water, 32 degrees F. air, and 20 MPH wind, 24-hour survival may be predicted for most men, based on results in the limited number of subjects used in this investigation.
- Protective Equipment
- Escape, Rescue and Survival