Cool game. Looks and feels very polished. Bit difficult to get the hang of the controls right. Probably because operating a crane does require a bit of effort and learning :D.
Unfortunately, I had to wait for long time before the trucks appeared. I personally would have made it such that there always were trucks waiting there to be unloaded. (This is probably what the timer bug is about :D)
Also the boat drifted away after a while, making it impossible to load it further. This felt a bit unfair.
Overall good submission though and I had fun playing it.