Japanese cruiser Nachi

Japanese cruiser Nachi
Presumed official USN or IJN photographer · Public domain · source
Ship name	Japanese cruiser Nachi
Ship image	frameless|upright=1.2
Ship caption	*Nachi* in 1932
Ship country	Empire of Japan
Ship class	Myōkō-class cruiser
Ship builder	Kure Naval Arsenal
Ship laid down	26 November 1924
Ship launched	15 June 1927
Ship commissioned	26 November 1928
Ship fate	Sunk 5 November 1944

Japanese cruiser Nachi. The Japanese cruiser Nachi was a Myōkō-class cruiser of the Imperial Japanese Navy that played a significant role in the early stages of the Pacific War. Its operational history is deeply intertwined with the collapse of Dutch colonial rule in Southeast Asia, as it was a key component of the naval forces that overwhelmed Allied fleets defending the region. The cruiser's actions directly contributed to securing the strategic resources of the Dutch East Indies for Japan, marking a decisive end to centuries of Dutch colonization in Southeast Asia.

Design and Construction

The Nachi was the second vessel of the Myōkō-class cruiser, a class of four heavy cruisers designed under the constraints of the Washington Naval Treaty. Built at the Kure Naval Arsenal, it was laid down on 26 November 1924, launched on 15 June 1927, and commissioned on 26 November 1928. The design emphasized powerful armament and high speed, featuring ten 20 cm/50 3rd Year Type naval gun guns in five twin turrets and a suite of sixteen Type 93 "Long Lance" torpedo tubes. Its construction reflected the Imperial Japanese Navy's strategic shift towards a qualitative edge in naval power, a doctrine that would be pivotal in its campaign against Western colonial holdings. The ship was named after Mount Nachi, a sacred mountain in Wakayama Prefecture.

Service in the Dutch East Indies

Following the outbreak of the Pacific War in December 1941, Nachi was assigned to the Southern Expeditionary Fleet under Vice Admiral Ibo Takahashi. Its primary mission was to support the Japanese invasion of the Dutch East Indies, aimed at seizing the colony's vital oil and rubber resources. Operating from forward bases like Cam Ranh Bay in French Indochina, Nachi provided crucial cover for numerous Japanese invasion convoys landing troops on islands including Tarakan, Balikpapan, and Ambon. The presence of such a powerful warship, often in concert with its sister ship ''Haguro'', effectively neutralized the limited surface threat posed by the Royal Netherlands Navy and other Allied forces, demonstrating the overwhelming force that ended Dutch colonization in Southeast Asia.

Role in the Invasion of the Philippines

While the main thrust of its service was in the Dutch East Indies, Nachi also played a supporting role in the concurrent Philippines campaign (1941–1942). In January 1942, it was part of the covering force for landings at Davao on Mindanao, which served as a staging point for further operations into the Netherlands Indies. This operation severed lines of communication and potential reinforcement between the Philippines and the Dutch colonies, ensuring both campaigns could proceed with minimal interference. The cruiser's operations exemplified the coordinated, multi-pronged Japanese strategy that rapidly dismantled the disparate Allied defenses across Southeast Asia.

Operations in the Java Sea Campaign

Nachi achieved its most notable combat success during the Battle of the Java Sea on 27 February 1942. Serving as the flagship of Rear Admiral Takeo Takagi, commander of the 5th Cruiser Division, it led the Japanese covering force that decisively engaged the ABDACOM strike force under Rear Admiral Karel Doorman. In the ensuing battle, Nachi and other Japanese cruisers, utilizing superior Long Lance torpedoes and night-fighting doctrine, sank the Dutch cruisers HNLMS ''De Ruyter'' and HNLMS ''Java'', and severely damaged other Allied ships. This victory effectively destroyed the last organized Allied naval resistance in the region, leading directly to the surrender of Java and the complete occupation of the Dutch East Indies.

Final Engagements and Sinking

After securing the Dutch East Indies, Nachi was redeployed to northern Pacific waters, participating in the Aleutian Islands campaign and the Battle of the Komandorski Islands. It returned to Southeast Asian waters in 1944 as Allied forces began to counter-attack. On 5 November 1944, while at anchor in Manila Bay undergoing repairs, Nachi was attacked by multiple waves of aircraft from the United States Navy Task Force 38. Hit by at least nine aerial torpedoes and twenty bombs, the cruiser capsized and sank with heavy loss of life. Its sinking in the former American colony symbolized the turning tide of the war and the eventual liberation of Southeast Asia, though the colonial structures it had helped dismantle, particularly Dutch colonization in Southeast Asia, would not be restored in the postwar era.