HD Hyundai Heavy Industries NAVAL & SPECIAL SHIP

HD Hyundai Heavy Industries Delivers Overhauled 214-Class Diesel Submarine ‘Yun Bong-Gil’ Ahead of Schedule

HD Hyundai Heavy Industries (HD HHI) announced on the 20th that it has recently completed the overhaul of the 214-class diesel-electric submarine Yun Bong-Gil and delivered it early to the Republic of Korea Navy.

The overhaul began on January 30, 2023. Despite the complexity of the work, the project was completed 35 days ahead of the contractual schedule, demonstrating HD HHI’s exceptional technical capabilities. The company successfully carried out over 1,620 maintenance tasks—including approximately 1,260 planned tasks and 360 unplanned additional repairs—marking the largest-scale overhaul project for a submarine in South Korea to date.

Built by HD Hyundai Heavy Industries, Yun Bong-Gil is the fifth 214-class submarine of the ROK Navy. Since its delivery in June 2016, it has played a vital role in strategic missions, including joint exercises with the U.S. Navy. The submarine is 65.3 meters long, 6.3 meters wide, and has a submerged displacement of 1,800 tons. It is equipped with an Air-Independent Propulsion (AIP) system, enabling up to two weeks of submerged operation, and it carries indigenously developed cruise missiles capable of striking enemy key facilities with precision.

Joo Won-ho, Head of the Special Ship Business Unit at HD HHI, stated,

“The early delivery of the overhauled Yun Bong-Gil following the on-time delivery of Shin Chae-Ho demonstrates our strong capabilities in both submarine construction and maintenance. We will continue to contribute to national security as a key partner in safeguarding the seas of the Republic of Korea.”

Meanwhile, HD Hyundai Heavy Industries is actively expanding its presence in the global submarine market by developing various export-oriented models, including a 1,500-ton submarine for Peru, as well as 2,300-ton and 800-ton class platforms.