Fatigue at sea in Swedish shipping-a field study
2010 (English)In: American Journal of Industrial Medicine, ISSN 0271-3586, E-ISSN 1097-0274, Vol. 53, no 7, 733-740 p.Article in journal (Refereed) Published
BACKGROUND: Today many merchant ships sail with only two nautical officers, working a shift schedule of 6 hr on and 6 hr off. There are concerns that such a shift schedule is related to fatigue. However, little data exist from onboard studies of seafarers.
METHODS: Data were collected on board 13 ships. Fifteen participants worked on a 6-on, 6-off watch system and another 15 on a 4-on, 8-off watch system. Electrooculography, actigraphy, diaries, and reaction time tests were used to measure the effects of shift system on fatigue and sleep.
RESULTS AND CONCLUSIONS: Sleepiness was higher during the night shift in the 6-on, 6-off system. Moreover, sleepiness increased more during the watch in the 6-on, 6-off system compared to the 4-on, 8-off system. There was a trend toward shorter sleep episodes in the 6-on, 6-off system and sleep was more often split into two episodes.
Place, publisher, year, edition, pages
2010. Vol. 53, no 7, 733-740 p.
fatigue, sleep, seafarers, shift work
Environmental Health and Occupational Health
IdentifiersURN: urn:nbn:se:kth:diva-86901DOI: 10.1002/ajim.20814ISI: 000278975100009PubMedID: 20187001OAI: oai:DiVA.org:kth-86901DiVA: diva2:501141
QC 201202192012-02-132012-02-132012-02-19Bibliographically approved