The sale of South Korea's No. 1 container shipper HMM, which is anticipated to be one of Korea's largest mergers and acquisitions transactions for the second half of 2023, is expected to hit a snag amid a slowdown in the shipping industry, according to industry sources on Sunday.

In July, Seoul-based investment bank Samsung Securities, which is supervising the sale of HMM, formerly known as Hyundai Merchant Marine, initiated the sale of Korea Development Bank and Korea Ocean Business Corp.'s stake in HMM.

Both parties, who are the largest shareholders of HMM with 20.69 percent and 19.96 percent stake in HMM, respectively, are selling a total of 199 million shares via the process. Also, 200 million shares of HMM are scheduled to be additionally converted from perpetual bonds to be sold during the process.

Earlier this month, acquisition candidates for HMM were narrowed down to a three-way race between Korean fisheries firm Dongwon Industries, food giant Harim and LX Group. In November, KDB is reportedly scheduled to select its preferred bidder for the acquisition.

Regarding the sale, industry watchers say tumbling demand for maritime transport is expected to function as a burden for potential acquirers.

"Amid the global recession in the maritime transport industry, HMM's performance has been dwindling. With the acquisition of all of KDB's shares and Korea Maritime Development Corp.'s share in HMM expected to cost at least 5 trillion won ($3.6 billion), acquiring the company could work as a winner's curse at this timing," said a shipping industry official on the condition of anonymity.

As of Sept. 29, the Shanghai Containerized Freight Index, which calculates the fares of 15 of the most frequently used sea routes around the world and functions as a metric for demand in the maritime transport, shrank to 886.85, logging a 53 percent on-year decrease.

"The three highs -- high exchange rates, high interest rates and high prices -- are freezing consumer sentiment and decreasing maritime transport volumes overall," said another shipping industry official also on condition of anonymity.

Amid a global slowdown in the shipping industry, HMM's second-quarter numbers tumbled, with its quarterly sales logging 2.1 trillion won, posting a 57.7 percent on-year decrease. The company's operating profits logged 160 billion won, a 94.5 percent decrease from the same period last year.

"If HMM continues to post poor financial results, it could result in a decline in corporate value, and make it difficult to find a buyer. It is true that a low-cost acquisition may speedily end the M&A process, but sellers such as KDB and HMM's shareholders will not desire to sell the company at a low cost," she said.