 You see all these pipelines that run across the top. Whenever you see a ship like that, it's called a tanker. Tankers filled with petroleum products. Sometimes, foreign workers on these massive tankers wave to the tour boat. Penton says he'll look to see what country they're from and wonder. What their lives are, where they've come from, how they got into the maritime business. They'll work six months straight on that ship without ever getting off that ship.