Background. Work-related stress, mental and physical fatigue, disturbed sleep and mood are factors worsening functional status of seafarers. It might be crucial for decreasing operational readiness and situational awareness of seafarers and increasing the risk of accidents and injuries at work during sea missions.

The aim was to develop a web-based system for seafarers’ functional state assessment during sea missions.

Methods. The system includes administrative data and following questionnaires: Multidimensional fatigue inventory, Sleep diary, Hospital anxiety and depression scale, Pittsburgh Sleep Quality questionnaire, and SF-36. ECG monitoring for 72-hour period with further analysis of heart rate variability for assessment of functional status modifications under work-related stress conditions is foreseen.

Results. The developed web system is based on client-server architecture and international open source technologies including Apache web server, PHP scripts and MySQL database.

The pilot study on 25 seafarers was performed. The study results demonstrated physical and mental fatigue as the strongest factor, which was influenced by gender, age, activity limitation due to physical ailments, pain, emotional factors and activity limitation due to emotional problems and emotional state.

Conclusions. Technically, the computerized system provides a remote access to data base and enhances information management and information processing capabilities. Practically, the developed system provides an opportunity to assess the functional status of seafarers and detect the changes in physical and mental evoked by work load during sea mission.

The research was carried out in Klaipeda University and funded by a European Social Fund Agency grant for national project “Lithuanian Maritime Sectors' Technologies and Environmental Research Development” (VP1-3.1-SMM-08-K-01-019) and LEONARDO-LMP Project S.O.S. – Stress On Ships.