Though this game claims to be unique, this is in fact another instantiation of the "time management game," (Papa's Wingeria, Jacksmith et. all). I was never a fan of the genre, personally, but as a developer, you should at least be honest and admit that it is a continuation of a genre rather than something intent on forging a new path.
In terms of the gameplay itself, the game has severe issues. True to its word, Docks Crane Turbo is FAST. In fact, it's so fast that it's reminiscent of the 2000-era flash games that are currently unplayable due to the drastically faster processing speeds modern computers now use. The background is highly distracting, and for a moment, I had no clue what I was supposed to do. Even once you understand the nature of the game, there's no indication that you can hover your mouse over the impatient customers to get a glimpse at their order! Many new players would give up hope before completing the first stage. To compound matters, one cannot simply drop bad crates over the disposal to start from scratch. No, you have to physically drag your mouse over the tiny disposal machine itself.
The most fundamental flaw, here, though, is that there is no feeling of legitimate accomplishment as you progress through the game. You are simply determining which rectangular titles adorn the cargo holds. Compared to other games within the genre, this sort of labor feels insultingly menial. With the minimal between-level transitions (the music track doesn't even change during the transition...) and the fairly blank scoreboard, I don't really have anything to pull me on and play the game any further than the first few stages.