Hanwha Ocean Localizes 'Jejinjae' to Reduce Ship Vibration and Noise

Reducing Suspicious Vibration Noise to Enhance Operational Performance
Lloyd's Register Approval, Applicable to Various Warships and Vessels

Hanwha Ocean announced on the 15th that it has succeeded in domesticating vibration damping materials (制振材) that reduce ship vibration and noise.

Noise and vibration generated from naval vessels such as surface ships and submarines act as weaknesses by quickly exposing their location to the enemy. Vibration damping materials are coatings that drastically reduce such noise and vibration, enabling covert operations of naval vessels.

For the past 30 years, these materials have been imported from countries like the United States and Germany. To meet the minimum order quantity (MOQ) requirements set by suppliers, more coating than necessary had to be ordered. If work schedules changed and the shelf life was exceeded, some quantities had to be discarded, and procurement faced difficulties due to long lead times caused by customs procedures.

A model of Hanwha Ocean's Ulsan-class frigate exhibited at the International Maritime Defense Industry Exhibition (MADEX) held at BEXCO, Busan on the 7th.
[Photo by Hanwha Ocean]

The vibration damping material developed by Hanwha Ocean this time is cheaper compared to imported products and, due to domestication, can be used without issues related to minimum order quantities or customs procedures, thus improving production efficiency. It has also obtained Lloyd’s Register certification, allowing it to be widely applied not only to domestic and foreign naval vessels but also for special purposes. Since newly developed products must meet or exceed the performance of existing products and receive classification approval to be used on domestic and overseas vessels, this domestication holds even greater significance.

Hanwha Ocean is the only company that has successfully built and delivered the entire KDX-I, Korea’s first destroyer, and has experience constructing all subsequently ordered KDX-II/III series. Hanwha Ocean has built the most destroyers currently operated by the Republic of Korea Navy. Hanwha Ocean designed the concept for the development project of Korea’s first smart naval vessel, the Korean Destroyer (KDDX), and in November last year, an employee of a competitor was convicted after the design data was found inside the competitor’s company.

Like the development of this vibration damping material, Hanwha Ocean is making every effort to win the contract for the construction of the Ulsan Batch-III shipbuilding project to build next-generation frigates superior to the lead ship (1st ship), maximizing synergies among defense affiliates within the Hanwha Group through various technology developments. A Hanwha Ocean official said, “We have strengthened material competitiveness through the domestication of vibration damping materials,” and added, “We will do our best in shipbuilding in accordance with the philosophy of serving the nation through business.”

This content was produced with the assistance of AI translation services.