A ferry is stranded atop a building in Otsuchi in Iwate prefecture on Sunday. The Japanese government doubled the number of troops pressed into rescue operations to about 100,000, following the worst-ever earthquake to hit Japan. (Yomiuri Shimbun via Associated Press)

A ferry is stranded atop a building in Otsuchi in Iwate prefecture on Sunday. The Japanese government doubled the number of troops pressed into rescue operations to about 100,000, following the worst-ever earthquake to hit Japan. (Yomiuri Shimbun via Associated Press)