The boat is severely lacking in details. It is difficult to tell it is a boat at all. The logo could do with better texturing.
Also, logos are normally simple block reliefs. By making it have 3d elements you are creating something with elements that are too simple (the boat) or too complex (the water)
A vector art representation might be better, or maybe some over source logos so we can see what you are trying to achieve. Hell, a brief discription of what you are trying to achieve would help.
We can’t crit if we don’t know what you are going for.