This song is called "Dead Man's Boots," which is an expression which describes how difficult it is to get a job; in other words, you'd only get a job in the shipyard if somebody else died.
この曲は『死人のブーツ』といいます この言葉は仕事に就くのが どれだけ大変な事かを表しています つまり 造船所で仕事に就く時は 誰かが死んだ時です