I like this, the mysteriousness induced by the fog is great. I like how the two men in the front are looking ahead into 'the unknown', while the man in the rear is turned more towards the back, as if he had doubts and considered the thought of turning back.
Compositionally, having the boat in the top left quadrant, and headed out of the picture, enhances the effect that they are about to be lost from sight, lost into the fog.