Knowledge

Keyword: health and safety

paper

Occupational accidents in the Danish merchant fleet and the nationality of seafarers

Ádám, Balázs; Rasmussen, Hanna Barbara; Pedersen, Randi Nørgaard Fløe; Jepsen, Jørgen Riis

Background
The aim of the study was to examine occupational accidents reported from non-passenger merchant ships registered in the Danish International Ship Register in 2010-2012, with a focus on analysing nationality differences in the risk of getting injured in an accident.

Methods
Data about notified occupational accidents were collected from notifications sent to the Danish Maritime Authority and from records of contact with Danish Radio Medical. Events were matched by personal identification and accident data to create a unified database. Stratified cumulative time spent on board by seafarers was used to calculate accident rates. Incidence rates of different nationalities were compared by Poisson regression.

Results
Western European seafarers had an overall accident rate of 17.5 per 100000 person-days, which proved to be significantly higher than that of Eastern European, South East Asian and Indian seaman (adjusted incidence rate ratio 0.53, 0.51 and 0.74, respectively), although differences decreased over the investigated period. Smaller but in most cases still significant discrepancies were observed for serious injuries. The back injury rate of Western European employees was found especially high, while eye injuries seem to be more frequent among South East Asian workers.

Conclusions
The study identified substantial differences between nationalities in the rate of various accidents reported from merchant ships sailing under the Danish flag. The differences may be attributed to various factors such as safety behaviour. Investigation of special injury types and characterisation of effective elements of safety culture can contribute to the improvement of workplace safety in the maritime sector

Journal of Occupational Medicine and Toxicology, volume 9 / 2014
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paper

Medical evacuations from offshore oil and gas installations – an exploratory scoping review

Andrew Fenn

Background: Medical evacuations (MEDEVACs) from offshore installations are both costly and disruptive. Enhancing worker well-being may help reduce evacuations due to illness or injury, thereby maintaining the smooth operation of offshore activities and lowering financial burdens.

Objectives: This scoping review aims to identify whether illness or injury is the predominant cause of MEDEVACs from offshore oil and gas installations and to determine the most common types of illnesses or injuries involved. Additionally, the review outlines a future research agenda focusing on offshore worker health and well-being.

Materials and methods: A comprehensive structured search was conducted across the Scopus, PubMed, and Web of Science databases, as well as through reference lists and grey

literature. Studies were included if they addressed MEDEVACs from offshore oil and gas installations. Eleven articles met the inclusion criteria.
Results: Articles indicate that non-occupational illnesses are more frequent causes of MEDEVACs than injuries. Among these, chest pain, cardiovascular issues, and dental problems were disproportionately represented. Contractor personnel were more likely to require evacuation than company employees. Additionally, younger workers were more likely to be evacuated due to injuries. Chronic health conditions were more common reasons for MEDEVACs among older workers. The review highlights the significant role of non-communicable diseases in contributing to MEDEVACs, as opposed to occupational exposures.

Conclusions: Investing in preventive health management, targeted research, and workforce education may substantially reduce the prevalence of non-communicable diseases in the offshore environment, lowering MEDEVAC rates, associated costs, and operational disruptions. Further investigation into the underlying causes of ill health among offshore workers is needed to enhance overall workforce well-being.

International Maritime Health / 2025
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paper

Cardiovascular mortality among seafarers: a Danish nationwide cohort study

Anna Uhd Bøge, Sören Möller, Rune Lindahl-Jacobsen, Lisa Loloma Froholdt, Kimmo Herttua & Linda Juel Ahrenfeldt

OBJECTIVES: Cardiovascular disease (CVD) is the leading cause of death globally and the second most frequent cause of death in Denmark. Due to their unique occupational environment, seafarers are exposed to numerous risk factors for CVD including lifestyle and work-related factors. This study aims to investigate CVD mortality among Danish seafarers by comparing them to the economically active reference population.

METHODS: This register-based cohort study included data on all Danish seafarers from 1993 to 2016 and compared them with the economically active Danish population not working as seafarers. The seafarers' mortality was calculated using piecewise stratified Cox regression adjusting for potential confounders. Mortality was further analyzed by diagnosis groups, vessel type and employment duration.

RESULTS: Among 52 861 seafarers, 4226 deaths were observed, with 866 (20.5%) of these attributed to CVD. Male seafarers had higher all-cause mortality in age groups 18-44 years (HR 1.46, 95% CI 1.33 to 1.62), 45-64 years (HR 1.43, 95% CI 1.37 to 1.50) and 65+ years (HR 1.32, 95% CI 1.26 to 1.39) compared with the reference population. CVD mortality was increased for male seafarers aged 45-64 years (HR 1.27, 95% CI 1.13 to 1.42) and 65+ years (HR 1.34, 95% CI 1.21 to 1.48). The mortality was higher for male seafarers for ischemic heart diseases, other forms of heart diseases, cerebrovascular diseases and diseases of arteries, arterioles and capillaries. CVD mortality was also observed based on vessel type.

CONCLUSIONS: The study provides evidence of elevated CVD mortality among Danish seafarers. Future research should focus on identifying effective strategies to improve the cardiovascular health of seafarers.

Occupational and Environmental Medicine / 2025
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paper

Fault tolerant position-mooring control for offshore vessels

Blanke, Mogens; Nguyen, Dong Trong

Fault-tolerance is crucial to maintain safety in offshore operations. The objective of this paper is to show how systematic analysis and design of fault-tolerance is conducted for a complex automation system, exemplified by thruster assisted Position-mooring. Using redundancy as required by classification societies' class notations for offshore position controlled vessels, the paper shows how violations of normal behaviour of main components can be detected and isolated. Using a functional service philosophy, diagnosis procedures are auto-generated based on provable correct graph analysis methods. Functional faults that are only detectable, are rendered isolable through an active isolation approach. Once functional faults are isolated, they are handled by fault accommodation techniques to meet overall control objectives specified by class requirements. The paper illustrates the generic methodology by a system to handle faults in mooring lines, sensors or thrusters. Simulations and model basin experiments are carried out to validate the concept for scenarios with single or multiple faults. The results demonstrate that enhanced availability and safety are obtainable with this design approach. While methods are introduced at a tutorial level, the paper is original by providing a total Position-mooring system design that ensures resilience to any single fault and to selected multiple faults.

Ocean Engineering, Volume 148 / 2018
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paper

Maritime doctors’ skills and competencies: A review for policy analysis

Bygvraa, Despena Andrioti; Adhikari, Tara Ballav; Charalambous, George; Jensen, Olaf Chresten

Maritime medicine deals with the health of seafarers, fishermen, and offshore employees and, more specifically, with their employment, working and living conditions, and their health and safety at sea. Maritime doctors should have the appropriate training and competencies to provide the equivalent service as would be found on land. This review discusses a) the required skills and competencies of maritime doctors and b) explores the associated ongoing discussions for the establishment of a global accredited Masters programme in maritime health. A literature review was conducted using 2 databases: PubMed and Google scholar. Search terms included: maritime doctors, maritime medicine, occupational health, and skills and competencies. Literature published between 1990 and 2018 was prioritised. Thirty-five articles that discussed the skills, competencies, and education of maritime doctors and health professionals were retrieved, reviewed, and discussed, plus 8 reports and documents from relevant International Organisations webpages. We explored policies in relation to training using i) the health triangle and ii) the Kingdon model. Doctors who serve in the sector should have extensive knowledge about medical practice, but also about the environment of seafaring. The complexity of their roles, coupled with the provision of a high quality of services in global shipping, call for high quality accredited training and harmonisation of maritime health practices. The analysis of policy, using 2 policy models, showed that a window of opportunity appears to be in favour of a policy regarding the recognition of maritime medicine as a medical specialisation. International stakeholders, together with the International Maritime Health Association, should actively advocate such a perspective which will be in favour of seafarers, who will enjoy better health and wellbeing, with higher income while avoiding ill-health, as well as the shipping industry, which will employ satisfied and loyal employees, and will enjoy a higher reputation.

Maritime Technology and Research, 2(1) / 2019
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paper

Do Danish Maritime Doctors Value Continuous Education Initiatives?

Bygvraa, Despena Andrioti; Faurby, Mads D.; Le, Jette Videbæk; Jensen, Olaf C.

Aims and objectives: Seagoing employees must undergo medical examinations every second year. Even though International Organisations issued guidelines for these pre-employment medical examinations there is a lack of an internationally accepted continuous training programme for the maritime doctors who perform these examinations. The aim of this survey was to examine the Danish maritime doctors perceived training needs as part of a planned comprehensive maritime occupational health prevention programme.

Methods: A questionnaire based on international standards was distributed to all the maritime doctors (110) electronically in May 2017. The completed questionnaires were 46.4%. STATA was used for the statistical analysis of the data and correlations among the self-rated needs as dependent variables and the doctors characteristics were performed with Fisher exact test, with significance level at α=0.05%.

Results: The maritime doctors considered very important to receive training in “Fitness evaluation and medical examinations guidelines” (76.47%) followed by “Rules and regulations within maritime medicine” (68.63%) and “Working conditions and health risks on board” (62.75%). The number of examinations influenced their preference with those with more than 20 patients to express a more pressing need for training. Age, gender and years of practice did not have any influence in their self-rated needs. Furthermore, they pointed out flexible ways of training including distance learning and
the establishment of a webpage by the respective Authorities as one stop-shop.

Conclusion: Maritime doctors are in favour of continuous education and training. The survey may help the respective Authorities to organise such short courses on targeted topics in the country.

Health Econ Outcome Res Open Access 2017, 3:3 / 2017
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report

Arbejdsmiljøkonsekvenser af elektronisk overvågning af bundtrawlfiskeriet i Kattegat – danske jomfruhummerfiskere

Eva Roth, Despoina Andrioti Bygvraa, Brooks Kaiser, Signe Dolberg McKinney

I december 2019 kommer fiskeriminister Mogens Jensen hjem fra Rådsmøde - de årlige kvoteforhandlinger
for 2020 i Bruxelles - med den besked, at jomfruhummerfiskeriet i Kattegat i fremtiden vil blive underlagt
kameraovervågning for forventeligt at nedbringe bifangst af torsk i dette fiskeri. Torskebestanden i Kattegat
er yderst presset og den generelle kvote er sat til nul. En mindre bifangstkvote på torsk blev således betinget
af denne overvågning, så man kan monitere torskefangsterne og sikre mod et udsmid af mindre torsk i fiskeriet,
en praksis, som myndighederne forudsatte yderligere ville forværre tilstanden i torskebestanden. Denne sidste
kausalsammenhæng er dog tvivlsom.
Torsk er således blevet en ”stop-art” for jomfruhummerfiskeriet og myndighedernes argumentation er, at
alternativet til kameraovervågning er et stop for jomfruhummerfiskeriet i Kattegat, da det ikke kan opretholdes
uden en bifangstkvote af torsk (Bilag 5). Udkommet af forhandlingerne kender vi, men det har ikke været
muligt at få yderligere indblik i selve forhandlingsprocessen; Havde de danske forhandlere alternative
positioner at falde tilbage på? Havde den danske delegation en forventning til reaktionerne i den danske
fiskerisektor? Var forhandlerne indstillet på at lukke jomfruhummerfiskeriet i Kattegat (proportionalitet)? Det
får vi muligvis aldrig indsigt i.

Syddansk Universitet / 2023
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paper

The costs of repatriating an ill seafarer: a micro-costing approach

Faurby, Mads D.; Jensen, Olaf C.; Hjarnoe, Lulu; Bygvraa, Despena Andrioti

Seafarers sail the high seas around the globe. In case of illness, they are protected by international regulations stating that the employers must pay all expenses in relation to repatriation, but very little is known about the cost of these repatriations. The objective of this study was to estimate the financial burden of repatriations in case of illness. We applied a local approach, a micro-costing method, with an employer perspective using four case vignettes: I) Acute myocardial infarction (AMI), II) Malignant hypertension, III) Appendicitis and IV) Malaria. Direct cost data were derived from the Danish Maritime Authority while for indirect costs estimations were applied using the friction cost approach. The average total costs of repatriation varied for the four case vignettes; AMI (98,823 EUR), Malignant hypertension (47,597 EUR), Appendicitis (58,639 EUR) and Malaria (23,792 EUR) mainly due to large variations in the average direct costs which ranged between 9560 euro in the malaria case and 77,255 in the AMI case. Repatriating an ill seafarer is a costly operation and employers have a financial interest in promoting the health of seafarers by introducing or further strengthen cost-effective prevention programs and hereby reducing the number of repatriations.

Health Economics Review, volume 7 / 2017
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paper

The impact of the Maritime Labor Convention on seafarers’ working and living conditions: an analysis of port state control statistics

Fotteler, Marina Liselotte; Bygvraa, Despena Andrioti; Jensen, Olaf Chresten

Background
The Maritime Labour Convention, 2006 (MLC2006) entered into force in August 2013 and is a milestone for better working and living conditions (WLC) for seafarers. As of March 2020, 96 countries have ratified the MLC2006, covering more than 90% of the world’s shipping fleet. A system of port state control (PSC) allows ratifying countries to inspect any foreign ship arriving in their ports for compliance with the convention. It is intended as a second safety measure for the identification of substandard ships that sail all over the world. Nine regional agreements, so-called Memoranda of Understanding (MoU), have been signed to coordinate and standardize PSC inspections and to increase efficiency by sharing inspections and information. This paper uses public PSC statistics to evaluate the impact of the MLC2006.

Methods
A preliminary analysis using registered tonnage and MLC2006 ratification was conducted and seven MoU were selected for the analysis. The annual reports of these MoU have been viewed in September 2019. Numbers on annual inspections, deficiencies and detentions and in particular data for deficiencies related to living and working conditions and certificates and documents, have been extracted and analyzed for the years 2010 to 2017.

Results
Across the eight-year period analyzed, inspection numbers remained stable among all MoU authorities. Deficiencies overall and deficiencies related to WLC declined, indicating an improvement in conditions overall and an increased focus on seafarers’ conditions on board. After the MLC2006 entered into force, three MoU reported WLC-ratios above 14%, while the numbers didn’t rise above 10% in the other four authorities. Deficiencies related to certificates and documents did not rise significantly between 2010 and 2017. Two European MoU showed the highest ratios for deficiencies in both categories analyzed.

Conclusion
The analysis confirmed that an increasing attention is being paid to the inspection of working and living conditions, especially in European countries. However, a clear positive impact of the MLC2006 could not be determined from the PSC statistics in this analysis. A large variation still exists among the MoU, a fact that demands increased efforts for harmonization of PSC procedures.

BMC Public Health, volume 20 / 2020
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