Map of Japan initial earthquake epicenter and nuclear power plants
Industry sources have said that, based on information gathered so far, there has been serious damage to the ports of Hachinohe, Hitachi, Hitachinaka, Ishinomaki, Kamaishi, Kashima, Ofunato, Onahama, Sendai-Shiogama and Soma.
It seems Sendai Port is closed for the time being with phone lines and other communication down and some rumours say that it has been almost completely destroyed.
However, as to be expected there are some slightly conflicting reports.