According to reports, Hyundai Heavy Industries Co., led declines among shipyard stocks on concern of fewer orders for vessels this year after bulk rates fell the most since June 1989. Hyundai Heavy dropped 6.6 percent, the biggest decline in almost five months, to close at 382,500 won. Unit Hyundai Mipo Dockyard Co. declined 6.5 percent, the largest loss in two months, to 244,000 won. Bulk rates plunged last week on concern economic slowdowns in China, the world's biggest buyer of iron ore used to make steel, and the U.S. may reduce trade demand for commodities and consumer goods. Demand from China, Asia's second-largest economy, last year helped lift fees to a record, prompting vessel orders. Shipping lines including STX Pan Ocean Co. and Pacific Basin Shipping Ltd.