From the LA Times

It takes about 7,000 tons of bunker-fuel to fill the tanks of a 5,000-container cargo ship for a trip from Shanghai to Los Angeles. Over the last year and half, the cost of that fuel has jumped 87% to $552 a ton, according to the World Shipping Council, boosting the cost of a fill-up to more than $3.8 million.

"To put things in perspective, today's extra shipping cost from East Asia is the equivalent of imposing a 9% tariff on East Asian goods entering North America," said Rubin of CIBC World Markets. "At $200 per barrel, the tariff equivalent rate will rise to 15%."