Re: boat shoes - women's wide, lace up??
I think if you are after a athletic look deck shoe in wide you are going to be out of luck or extremely lucky. A few years back Sperry had a mutual deal with New Balance and they made shoes in wide for men and I believe women. When they discontinued them I bought three pair and I have not seen them offered in mens, let alone womens, since.
You may want to bite the bullet and get a pair of Sperry Billfish or similar as they are available in wides.