Japan's Defense Innovation: Landing Support Vessel YOKO Takes to Water.

According to information published by the Japanese MoD on November 28, 2024, he Japan Maritime Self-Defense Force (JMSDF) celebrated the naming and launching ceremony of the Landing Support Vessel “YOKO” at the Naikai Shipbuilding Corporation’s Setoda Shipyard. This significant milestone marks the progress toward establishing a new joint operational unit of the Self-Defense Forces (SDF), bringing together capabilities from the Ground, Maritime, and Air Self-Defense Forces. The Maritime Transport Group, which will operate the "YOKO," is expected to officially commence operations by the end of the fiscal year.
Follow Army Recognition on Google News at this link

YOKO debuts: Japan's newest Landing Support Vessel prepares for SDF joint operations. (Picture source: Japanese MoD)

Designed to support a range of missions, the “YOKO” features cutting-edge technology and a versatile structure capable of transporting cargo, vehicles, and personnel. The vessel’s design emphasizes operational flexibility and environmental sustainability, aligning with Japan’s commitment to green initiatives in its defense sector. Advanced navigation and communication systems ensure that the vessel can operate effectively in challenging maritime environments.

The introduction of the “YOKO” also signifies Japan’s strategic pivot towards greater interoperability among its defense branches. By unifying resources and improving coordination, the Maritime Transport Group aims to strengthen Japan’s readiness to respond to diverse challenges, from natural disasters to regional security threats.

Officials underscored the vessel’s role in advancing Japan’s operational efficiency and regional engagement. The new ship embodies the nation’s resolve to maintain stability in the Indo-Pacific while upholding its responsibilities as a maritime power.

Prior to the introduction of the new Landing Support Vessel "YOKO," the JMSDF utilized several classes of tank landing ships (LSTs), each serving distinct roles in Japan's maritime operations.

Ōsumi-Class Tank Landing Ships (1961):

In the early 1960s, the JMSDF operated the Ōsumi-class LSTs, which were former U.S. Navy LST-542-class ships transferred to Japan under the MSA agreement. These vessels were instrumental in maritime transport and operational deployments, forming the backbone of Japan's early post-war amphibious capabilities.

Atsumi-Class Tank Landing Ships:

To replace the aging Ōsumi-class, the JMSDF introduced the Atsumi-class LSTs in the early 1970s. These domestically built ships had a standard displacement of 1,500 tons and were primarily used for logistic support, including transporting heavy construction equipment. The class consisted of three ships: Atsumi, Motobu, and Nemuro, commissioned between 1972 and 1977.

Miura-Class Tank Landing Ships:

Following the Atsumi-class, the Miura-class LSTs entered service in the mid-1970s. These vessels featured a standard displacement of 2,000 tons and enhanced capabilities for logistic support and amphibious operations. The Miura-class included three ships: Miura, Ojika, and Satsuma, commissioned between 1975 and 1977. Notably, JS Satsuma was used to trial new weaponry, such as the OTO Melara 76 mm Compact gun.