Nice game with multiple modes within, great job. Good choice for music as well, match the style.
Minor points.
Could do with a note to use the spacebar when fishing (had to go back to your page to find the controls for that).
Maybe a compass? :) something to help with navigation back to port (I got a little lost in the storm, but I'm sure that's part of the fun :P).
And as others have said, maybe a bit of balance with money, Repairing the boat cost to much (perhaps I could spend what I have to repair it as much as I could, rather then the whole thing?)
Great job though on the whole game in a week! Well done!