A Survey Exploring How Watch Officers Manage Effects of Sleep Restrictions During Maritime Navigation

Overview

Journal Int J Environ Res Public Health

Publisher MDPI

Specialties Environmental Health
Public Health

Date 2023 Jan 21

PMID 36673739

Authors

Claire Giot

Laure Lejeune

Nicolas Bessot

Damien Davenne

Affiliations

Soon will be listed here.

Abstract

Merchant marine officers work shifted hours with a sometimes very tiring work/rest rhythm that can lead to sleep restrictions and increased sleepiness during navigation. The aim of this study is to assess the risk of sleep deprivation-related sleepiness during navigation and the factors contributing to this risk. A second objective is to evaluate the use and effectiveness of sleepiness countermeasures. An online quantitative survey of 43 questions was conducted on 183 French maritime officers. A total of 39.9% of the participants experienced at least occasionally severe sleepiness and 29% had fallen asleep during navigation. A total of 42.6% reported not being able to experience enough sleep on board. Sleep requirements were affected by time spent on board, area of activity, and watch system. Sleepiness was more common during monotonous than demanding sailing. Officers frequently use caffeine, as well as vigilance-enhancing activities that they consider effective, which are not yet validated, (i.e., social interactions). However, they are not inclined to seek replacements in case of severe sleepiness. Sleep deprivation is common among maritime officers and leads to the risk of severe sleepiness while operating the vessel, with few effective countermeasures available. Strategies used for sleep management and sleepiness prevention should focus more on sleep duration, safety culture, and improving countermeasures to sleepiness.

References

van Leeuwen W, Kircher A, Dahlgren A, Lutzhoft M, Barnett M, Kecklund G . Sleep, sleepiness, and neurobehavioral performance while on watch in a simulated 4 hours on/8 hours off maritime watch system. Chronobiol Int. 2013; 30(9):1108-15. DOI: 10.3109/07420528.2013.800874. View

Lutzhoft M, Dahlgren A, Kircher A, Thorslund B, Gillberg M . Fatigue at sea in Swedish shipping-a field study. Am J Ind Med. 2010; 53(7):733-40. DOI: 10.1002/ajim.20814. View

Horne J, Reyner L . Counteracting driver sleepiness: effects of napping, caffeine, and placebo. Psychophysiology. 1996; 33(3):306-9. DOI: 10.1111/j.1469-8986.1996.tb00428.x. View

Howard M, Jackson M, Berlowitz D, ODonoghue F, Swann P, Westlake J . Specific sleepiness symptoms are indicators of performance impairment during sleep deprivation. Accid Anal Prev. 2013; 62:1-8. DOI: 10.1016/j.aap.2013.09.003. View

Oldenburg M, Jensen H . Stress and Strain among Seafarers Related to the Occupational Groups. Int J Environ Res Public Health. 2019; 16(7). PMC: 6480598. DOI: 10.3390/ijerph16071153. View

Oron-Gilad T, Ronen A, Shinar D . Alertness maintaining tasks (AMTs) while driving. Accid Anal Prev. 2008; 40(3):851-60. DOI: 10.1016/j.aap.2007.09.026. View

Akerstedt T . Psychological and psychophysiological effects of shift work. Scand J Work Environ Health. 1990; 16 Suppl 1:67-73. DOI: 10.5271/sjweh.1819. View

Leger D, Ement P . [Sleepiness and accidental risk]. Presse Med. 2015; 44(10):1022-8. DOI: 10.1016/j.lpm.2015.04.002. View

Sagaspe P, Taillard J, Chaumet G, Moore N, Bioulac B, Philip P . Aging and nocturnal driving: better with coffee or a nap? A randomized study. Sleep. 2008; 30(12):1808-13. PMC: 2276135. DOI: 10.1093/sleep/30.12.1808. View

10.

Cluydts R, De Valck E, Verstraeten E, Theys P . Daytime sleepiness and its evaluation. Sleep Med Rev. 2003; 6(2):83-96. DOI: 10.1053/smrv.2002.0191. View

11.

Harma M, Sallinen M, Ranta R, Mutanen P, Muller K . The effect of an irregular shift system on sleepiness at work in train drivers and railway traffic controllers. J Sleep Res. 2002; 11(2):141-51. DOI: 10.1046/j.1365-2869.2002.00294.x. View

12.

Dembe A, Erickson J, Delbos R, Banks S . Nonstandard shift schedules and the risk of job-related injuries. Scand J Work Environ Health. 2006; 32(3):232-40. DOI: 10.5271/sjweh.1004. View

13.

Ferguson S, Lamond N, Kandelaars K, Jay S, Dawson D . The impact of short, irregular sleep opportunities at sea on the alertness of marine pilots working extended hours. Chronobiol Int. 2008; 25(2):399-411. DOI: 10.1080/07420520802106819. View

14.

Harma M, Partinen M, Repo R, Sorsa M, Siivonen P . Effects of 6/6 and 4/8 watch systems on sleepiness among bridge officers. Chronobiol Int. 2008; 25(2):413-23. DOI: 10.1080/07420520802106769. View

15.

Horne J, Anderson C, Platten C . Sleep extension versus nap or coffee, within the context of 'sleep debt'. J Sleep Res. 2008; 17(4):432-6. DOI: 10.1111/j.1365-2869.2008.00680.x. View

16.

Folkard S, Lombardi D, Tucker P . Shiftwork: safety, sleepiness and sleep. Ind Health. 2005; 43(1):20-3. DOI: 10.2486/indhealth.43.20. View

17.

Anund A, Kecklund G, Peters B, Akerstedt T . Driver sleepiness and individual differences in preferences for countermeasures. J Sleep Res. 2008; 17(1):16-22. DOI: 10.1111/j.1365-2869.2008.00633.x. View

18.

Dohrmann S, Leppin A . Determinants of seafarers' fatigue: a systematic review and quality assessment. Int Arch Occup Environ Health. 2016; 90(1):13-37. DOI: 10.1007/s00420-016-1174-y. View

19.

Williamson A, Lombardi D, Folkard S, Stutts J, Courtney T, Connor J . The link between fatigue and safety. Accid Anal Prev. 2010; 43(2):498-515. DOI: 10.1016/j.aap.2009.11.011. View

20.

Pylkkonen M, Sihvola M, Hyvarinen H, Puttonen S, Hublin C, Sallinen M . Sleepiness, sleep, and use of sleepiness countermeasures in shift-working long-haul truck drivers. Accid Anal Prev. 2015; 80:201-10. DOI: 10.1016/j.aap.2015.03.031. View