This is where I live and the main areas I paddle.
The sea chart at 1:20,000 for the bay area has too much information on it to make a clear trip map but here it is anyway.
The pink squares are the shellfish and seaweed beds that are such a hazard in bigger boats.
What will be my trip map is taken from yahoo maps where you can see Matsushima at various scales
Matsushima – my town’s website