***/a/woman I believe is the correct pronunciation.
http://en.wikipedia.org/wiki/Assawoman_Bay
http://www.beach-net.com/assawoman/assawomantour.html
http://www.vims.edu/bio/sav/sav98/quads/as166.html
Be careful, all the backwaters of OC, maryland and up through De.
are tricky and change often.
There are charts available, but they seam to be hard to find.
I lucked out and someone lost one that I found on the side of the road.