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| Title: | THE EFFECT OF SPHERICAL FRONT WINDOW ON DIVER PERFORMANCE. |
| Authors: | Strannemalm, K
Hagglin, A
Ornhagen, H |
| Keywords: | DIVING
DIVER EQUIPMENT
head movement
PERFORMANCE(HUMAN)
vision
spherical acrylic helmet
full face mask
questionnaire
visor |
| Issue Date: | 1990 |
| Publisher: | Undersea and Hyperbaric Medical Society, Inc. |
| Citation: | Undersea Biomedical Research, Vol. 16, No. 1 Supplement, March 1990 |
| Abstract: | Today's requirements for bail-out, gas reclaim, and gas heating have more or less eliminated head movements in divers, giving them a severely restricted field of vision without body movement. A solution to this problem is a spherical acrylic helmet, but rumors among divers have caused doubts regarding diver performance using this type of helmet, and only comparatively few helmets of this type are in use. For the development of a new concept of deep diving equipment, including a spherical visor, a test of diver performance was deemed necessary. Thirty-seven professional and sports divers were thus exposed to a series of five manual performance tests, in a well lighted indoor water tanle. The Interspiro Mark II full face mask served as control. The tests were designed to elucidate possible problems in distance and angular determination. In addition, a questionnaire on subjective opinions was given to the test subjects. No difference in mean performance was seen between flat and spherical visors. In general, distances were underestimated both in flat and spherical visors. However, it seemed that professional divers performed less well when using spherical visor, probably due to their previous experience with flat front windows. Only a few negative comments were made on the spherical helmet, most of them related to the high boyancy of the prototype, test helmet. We conclude, everything else being equal, that there is no obvious performance limitation to spherieal helmets. |
| Description: | Abstract of the Undersea and Hyperbaric Medical Society, Inc. Joint Annual Scientific Meeting with the International Congress for Hyperbaric Medicine and the European Undersea Biomedical Society held 11-18 August 1990. Okura Hotel, Amsterdam, The Netherlands (http://www.uhms.org) |
| URI: | http://archive.rubicon-foundation.org/7292 |
| Appears in Collections: | UHMS Meeting Abstracts
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