According to every news network, the Marathon Bombing suspect is in a boat is cornered in a boat iin the back of Franklin Street.
Via Blake Hounshell and Bing Maps, this is almost certainly it.
For full coverage of the reported standoff, see here >
And here's a street view.
RT @billy_baker: Photo of boat where suspect is hiding, taken from street view Bing map, via WBZ's @peteswire. twitter.com/PetesWire/stat…
— Matt Soleyn (@MattSoleyn) April 20, 2013