I've said for years that I've learned so much about the world from working in
Fort McMurray in the Oilsands, and in construction in general. (Sounds like you've had similar experiences ship-side)
I've worked with and learned from people from many African, European, and South American nations and loved the opportunity.
First example comes to mind is a wonderful gentleman from Cameroon named Gordon Ndamukong (probably spelled that really wrong). He was a school teacher who spoke 9 languages and had never even changed a tire before, who found himself on the other side of the planet with a 5 foot long torque wrench in his hands, 150 feet up the side of a tower.
He was a skinny man, not strong, but he gave his all. I outweighed him by 50 pounds and had 30 years experience, but he did his best to keep up and did himself proud.
During breaks he stayed out in the coverall shack, studying so he could upgrade his teaching qualifications to be recognized in Canada.
He was a kind and gentle man. The only time I ever heard anger and hatred in his voice was when he told of his best friend being murdered by
Boko Harum less than a month before we met.
I learned more about his region of Africa in a month than I had gleaned from a lifetime of reading the news and will always treasure those experiences.