A number of ship owners are considering avoiding high risk areas in Japan and could re-route their vessels due to fears over the potential spread of radiation, shipping sources said on Wednesday. Japan's nuclear crisis appeared to be spinning out of control after workers withdrew briefly from a stricken power plant because of surging radiation levels.

Shipping sources said dry bulk vessels, carrying commodities such as grains and coal, as well as oil tankers, could move to avoid affected areas of Japan.

"Some owners are definitely considering routing differently to avoid any potential radiation cloud, and passing that on to charterers (those looking to hire ships)," a shipping source said. (Reuters)