Meantime, ports in China are starting to require strict radiation checks on ships arriving from Japan. And in California on Friday, the first ship to reach the Port of Long Beach since Japan’s earthquake was boarded and scanned for radiation by Coast Guard and federal customs officials before being allowed to dock.
Big Japanese ports much farther south of Tokyo, like Osaka and Kobe, are still loading and unloading cargo. But the Tokyo Bay ports of Tokyo and Yokohama are normally Japan’s two busiest, representing as much as 40 percent of the nation’s foreign container cargo. If other shipping companies join those already avoiding the Tokyo area, as radiation contamination spreads from Fukushima Daiichi 140 miles north, the delays in getting goods in and out of Japan would only grow worse.
The shipping industry’s fears have escalated since port officials in Xiamen, China, earlier this week detected radiation on a large container ship belonging to Mitsui O.S.K. Lines and quarantined the ship. The vessel had sailed down Japan’s northeast coast and reportedly came no closer than 80 miles to the damaged nuclear power plant; the official Xinhua news agency said on Saturday afternoon that the vessel had left a berth at the port on Wednesday afternoon and then anchored briefly at sea.
Hapag-Lloyd, a German container shipping line that is one of the world’s largest, halted service to Tokyo and Yokohama after the tsunami swamped Fukushima Daiichi. The shipper has not resumed service to those ports. “We put safety ahead of everything else,” said Eva Gjersvik, the company’s senior director for corporate communications, adding that the company was reviewing daily whether to resume sailings to Tokyo. euters reported that another German shipper, Claus-Peter Offen, has also stopped calling at Tokyo and Yokohama.
OOCL, a shipping line based in Hong Kong, said late Friday that the company had decided to halt all traffic to Tokyo and Yokohama. OOCL will take Tokyo-bound containers to Osaka instead and send them overland from there, said Stanley Shen, the head of investor relations. The company has also drafted contingency plans to prevent its containers from traveling even overland to Tokyo if radiation levels increase in the Japanese capital, Mr. Shen added.
Merchant vessels may have to be scrapped if quarantined even temporarily for radioactivity, because they would face extra coast guard checks for years at subsequent destinations, said Basil M. Karatzas, the managing director for projects and finance at Compass Maritime Services, a ship brokerage in Teaneck, N.J.
The extra inspections make it hard to keep a schedule. “The charterers in the future will try to avoid the vessel because of the likelihood it will be delayed again,” Mr. Karatzas said.
It is not only commercial ships that are giving the radiation region a wide berth.
A senior nuclear executive said on Friday evening that the United States Navy had moved nuclear-powered vessels like the Ronald Reagan aircraft carrier far from the Fukushima Daiichi nuclear power plant after officers became concerned that radiation from the plant could enter the ships’ air ducts.
The worry is not that the radiation would pose a threat to the vessels’ crews, but that even trace contamination of the ducts could create problems in the extremely sensitive equipment aboard nuclear-powered vessels that is intended to detect any hint of a radioactive leak from onboard systems, said the executive, who insisted on anonymity to protect business connections.
Shippers, even if they can avoid radiation exposure, know that cargo coming from Japan is now subject to new delays.