[NYCAP123]

I haven't had the time to read up totally on this. On the face i'd say yes, and also quite impossible, but I don't know what support they have (equipement, support vessels, etc.). Of course a sailor with complete faculties can easily get killed on a voyage like this but he signs on for it.
Even if they find themselves in the jackpot what they are doing to change the perception of "disabed" is probably more than worth it for them. After all, how many foolhearty things have we done just for the prize of saying we did it and nothing more. I remember when the Gentry Eagle tried for the Atlantic record and their electronics went down. No windows, but they kept going. At least these folks aren't doing 75.
In addition, being blind some of their other senses are heightened so they probably "see" better than a lot of "able-bodied" boaters we've all run across.. So dangerous? Yes, but I doubt they'll pose any more of a risk to others than our regular Sunday sailors. It sounds like they've taken precautions for crowded areas. They've got guts and the spirit of adventure. I say more power to them.