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10 Advantages and disadvantages of crew jobs at sea (NL)https://www.heldermaritiem.com/2021/02/10-advantages-and-disadvantages-of-crew-jobs-at-sea/?lang=nlCrew jobs at sea: tips & tricks (NL)https://www.heldermaritiem.com/2020/12/crew-jobs-at-sea-tips-tricks/?lang=nl