UPDATE 2-COSCO Shipping shares climb after bid to become third-biggest container line

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* COSCO offers 31.1 pct premium over OOIL Friday close

* COSCO shares rise 6 pct on Monday, OOIL up 20 pct

* Offer underlines China's desire to up control over supply chains (Adds analyst comments, context)

SHANGHAI/HONG KONG, July 10 (Reuters) - COSCO Shipping Holdings Co Ltd saw its stock climb on Monday after bidding $6.3 billion for a Hong Kong peer, a deal that would see it become the world's third-biggest container shipper and underline China's supply-chain ambitions.

State-backed COSCO Shipping on Sunday offered to buy Orient Overseas International Ltd (OOIL) at a 31.1 percent premium to its Friday close, a price analysts said was high given the industry was just emerging from a prolonged slump.

The offer comes as China's government is outspoken over its desire to raise its profile in global shipping, which dovetails with its Belt and Road initiative aimed at increasing its influence over supply chains from Asia to Europe.

It formed COSCO Shipping last year by merging sixth- and seventh-ranked container fleets China Ocean Shipping (Group) Co and China Shipping Group. The latest deal would raise COSCO from fourth rank and place it behind only Denmark's Maersk Line and Switzerland's Mediterranean Shipping Co (MSC).

"For Maersk, MSC, I think its a matter of time that COSCO will probably want to stake a claim to be the world's biggest carrier," said an analyst, who was not authorized to speak with media about the deal and so declined to be identified.

A suitor's shares often fall after making a bid, but COSCO Shipping's Hong Kong-listed stock rose as much as 6 percent on Monday to its highest in almost two years. OOIL stock rose as per usual for a target but at 20 percent, it was short of the offer price.

BOCOM International analyst Geoffrey Cheng said COSCO Shipping's offer represented a premium to comparable firms such as Maersk as well as similar transactions like France's CMA CGM SA's purchase of Singapore's Neptune Orient Lines in 2015.

"We think accepting the offer is the best option for (OOIL) investors," he said.


From Hong Kong's perspective, the deal comes as the city's transport hub status dims. Its once world-leading port is handling less cargo than in past years whereas cargo at mainland ports is on the rise. In the skies, flag carrier Cathay Pacific Airways Ltd recently posted its first loss since 2008.

OOIL commands less than 3 percent of the global container shipping market but could help COSCO gain exposure to the United States, industry insiders said.

OOIL's main container unit, Orient Overseas Container Ltd (OOCL), was founded in 1969 by Tung Chao-yung, father of former Hong Kong leader Tung Chee-hwa. The magnate's second son, Tung Chee-chen is now chairman, president and chief executive.

"The merger would be complementary as OOIL is strong in Transpacific and Intra-Asia trade, and COSCO has strong China domestic trade," said Samson Lo, head of Asia mergers-and-acquisitions at UBS, which is advising COSCO Shipping.

"The terminals and logistics businesses of OOIL can bring further synergies to COSCO as well."

COSCO is making its offer with Shanghai International Port Group Co Ltd. The shipping line, which in January secured $26 billion in financing from China Development Bank to support business development, said it would finance the deal with a bridge loan from Bank of China. (Reporting by Brenda Goh in SHANGHAI and Kane Wu in HONG KONG; Writing by Adam Jourdan; Editing by Christopher Cushing)