'Manila amendments' to the STCW Convention – as an IMO policy introduced during last decade, which has created controversy among the international maritime community.
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Fatigue is still considered as a significant contributory factor to many incidents in the shipping industry despite of legislation concerning seafarers' hours of work and rest that has been in force for many years; overall enforcement measures have generally been ineffective. (OCIMF, 2012). IMO describes fatigue as a “State of feeling tired, weary, or sleepy that results from prolonged mental or physical work, exposure to harsh environment, or loss of sleep which can lead to the impairment of performance and to the reduction of alertness” (IMO, 2001).
To provide a legal framework and address the problem of fatigue on the high level number of conventions have been adopted during last 30 years by IMO and ILO. In 1984 requirements…show more content… Moreover, in a real life it creates problems with proper understanding of approach for calculation of rest and work hours, analysis of the workload and real fatigue caused by the job. And last but not least, existing form of record keeping of hours of work and rest creates a lot of paper work for the crew and Ship managers and take of their times that could be spend for more important issues.
In the meantime, the fatigue prevention policy cannot be ideal since measurement of fatigue is extremely difficult due to the large variability of causes. In accordance with Guidance on Fatigue Mitigation and Management there are many ways to categorize the causes of fatigue. To ensure thoroughness and to provide good coverage of most causes, they have been categorized into 4 general factors:
• Crew-specific Factors;
• Management Factors (ashore and aboard ship);
• Ship-specific Factors;
• Environmental Factors.
Even if all of these factors can be considered with the same weighting coefficient in determination of level of fatigue, the most important factors will be still related to the crew specific factors such as Sleep and Rest, Quality, Quantity and Duration of Sleep, Sleep Disorders/Disturbances, Rest Breaks, Biological Clock/Circadian Rhythms, Psychological