Hours of work and sleep were recorded in daily activity logs by 46 enlisted men on two Fleet Ballistic Missile submarines during routine patrols. Total working time (watch standing, non-watch work, and study) averaged 12.0 hours a day. Daily sleep time averaged 8 hours a day on the ship and 7.5 on the other. Sleep was mildly fragmented in that the men averaged 1.3 sleep episodes, of somewhat less than 6 hours duration, in 24 hours. Thirty of the men were standing watch on a 6-hours-on-12-hours-off rotation which effectively imposed an 18-hour cycle on their activities. Questions in the logs were used to assess subjective sleep quality and sleepiness. Sleep quality on patrol was not as good as in a post-patrol period, but the difference between on- and off-patrol sleep quality was small. The 6-on-12-off watch schedule appeared to result in less sleep fragmentation than the traditional 4-on-8-off schedule. (Author)


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    Titel :

    Work and Rest on Nuclear Submarines


    Beteiligte:
    A. N. Beare (Autor:in) / R. J. Biersner (Autor:in) / K. R. Bondi (Autor:in) / P. Naitoh (Autor:in)

    Erscheinungsdatum :

    1981


    Format / Umfang :

    28 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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