Before moving back to the ship, I blocked in the basic foreground water.
Next, I began defining ver basic structures of the foreground water.
In addition to the foreground, I move to the background water, defining its structures as well,the waves, reducing in size the further they are from the viewer.
Next, I start darkening the foreground to indicate depth and to draw the viewer back to the ship. I also start applying a darker glaze to the foreground water.
I also took time to complete the sky. And then to reestablish the structures of the ship, working back and forth between ship, sea and sky.