Comparison of the 3/9 and 6/6 Watchstanding Schedules for Crewmembers of a U.S. Navy destroyer
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Authors
Shattuck, Nita Lewis
Matsangas, Panagiotis
Subjects
Advisors
Date of Issue
2016
Date
Publisher
SAGE
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Abstract
This naturalistic study of 52 sailors on the USS Jason Dunham (DDG-109) compared actigraphic sleep and psychomotor vigilance performance of crewmembers working a 3hours-on/9hours-off (“3/9”) with the performance of their counterparts who worked a 6hours-on/6hours-off (“6/6”) watchstanding schedule. Crewmembers on the 3/9 slept more (6.46±0.77 hours) and reported less daytime sleepiness (Epworth Sleepiness Scale (ESS) score = 10.7±3.70) than their peers on the 6/6 schedule (sleep 5.89±0.87 hours; ESS = 13.1±3.45). The length of the workday for participants on the 6/6 schedule was 15 hours compared to 12.2 hours for crewmembers on the 3/9. Based on 11 of 13 Psychomotor Vigilance Task metrics, performance of crewmembers on the 6/6 schedule had significantly greater variability than the 3/9 sailors (p<0.05). Overall, participants evaluated the 6/6 as being worse and the 3/9 as the better schedule. Results showed that the 3/9 outperformed the 6/6 in terms of daily sleep duration, fatigue levels, psychomotor vigilance performance, and acceptance from the participants.
Type
Article
Description
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Department
Operations Research (OR)
Organization
Naval Postgraduate School (U.S.)
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Format
5 p.
Citation
Shattuck, Nita Lewis, and Panagiotis Matsangas. "Comparison of the 3/9 and 6/6 Watchstanding Schedules for Crewmembers of a US Navy destroyer." Proceedings of the Human Factors and Ergonomics Society Annual Meeting. Vol. 60. No. 1. Sage CA: Los Angeles, CA: SAGE Publications, 2016.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.