open access

Vol 62, No 2 (2011)
ORIGINAL ARTICLES
Published online: 2011-09-09
Submitted: 2013-02-18
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Sleep disturbances among offshore fleet workers. A questionnaire-based survey

Jakob Hønborg Hansen, Ingunn Marie Holmen
International Maritime Health 2011;62(2):123-130.

open access

Vol 62, No 2 (2011)
ORIGINAL ARTICLES
Published online: 2011-09-09
Submitted: 2013-02-18

Abstract

Background. Shift work is related to fatigue and desynchronization with the external environment. This study investigates how 6-h shifts and 12-h shifts affects sleep and safety in workers onboard offshore supply vessels, and if any differences exist between the two working schedules.
Material and methods. A questionnaire study was carried out in the North Sea, Australia, Africa, South America, and the Far East, with 577 participants. The offshore fleet workers gave information on parameters related to sleep disturbances, causes of sleep disturbances, and safety. Regional differences in these parameters were also investigated.
Results. Workers on 6-hour shifts reported significantly more sleep problems than 12-hour shift workers did (p < 0.01). The 6-hour workers were more affected by noise (p < 0.01) and shift-work itself (p < 0.01).
Conclusions. Those working 6-hour shifts suffer more from sleep disturbances than those on 12-hour shifts, but this is not reflected in the perception of safety within the individual. Noise and shift-work itself is more of a problem in the 12-hour workers. Differences in safety culture and work morale are likely to cause the differences between regions.
(Int Marit Health 2011; 62, 2: 123–130)

Abstract

Background. Shift work is related to fatigue and desynchronization with the external environment. This study investigates how 6-h shifts and 12-h shifts affects sleep and safety in workers onboard offshore supply vessels, and if any differences exist between the two working schedules.
Material and methods. A questionnaire study was carried out in the North Sea, Australia, Africa, South America, and the Far East, with 577 participants. The offshore fleet workers gave information on parameters related to sleep disturbances, causes of sleep disturbances, and safety. Regional differences in these parameters were also investigated.
Results. Workers on 6-hour shifts reported significantly more sleep problems than 12-hour shift workers did (p < 0.01). The 6-hour workers were more affected by noise (p < 0.01) and shift-work itself (p < 0.01).
Conclusions. Those working 6-hour shifts suffer more from sleep disturbances than those on 12-hour shifts, but this is not reflected in the perception of safety within the individual. Noise and shift-work itself is more of a problem in the 12-hour workers. Differences in safety culture and work morale are likely to cause the differences between regions.
(Int Marit Health 2011; 62, 2: 123–130)
Get Citation

Keywords

shift work; offshore fleet; sleep disturbances; fatigue

About this article
Title

Sleep disturbances among offshore fleet workers. A questionnaire-based survey

Journal

International Maritime Health

Issue

Vol 62, No 2 (2011)

Pages

123-130

Published online

2011-09-09

Bibliographic record

International Maritime Health 2011;62(2):123-130.

Keywords

shift work
offshore fleet
sleep disturbances
fatigue

Authors

Jakob Hønborg Hansen
Ingunn Marie Holmen

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