Memorial Ship Mikasa

Memorial Ship Mikasa (記念艦三笠) is a pre-dreadnought battleship permanently preserved in Mikasa Park (三笠公園) in Yokosuka, Kanagawa Prefecture. She is the only surviving pre-dreadnought battleship and the last extant example of a non-American battleship anywhere in the world, making her an irreplaceable artifact of early 20th-century naval history.

CONSTRUCTION AND SPECIFICATIONS

Mikasa was ordered by the Imperial Japanese Navy from Vickers, Sons and Maxim at Barrow-in-Furness, England. She was laid down on 24 January 1899, launched on 8 November 1900, and commissioned on 1 March 1902. With a standard displacement of 15,140 tons, she measured 131.7 meters in length, 23.2 meters in beam, and 8.3 meters in draft. Her main armament comprised four 12-inch (305 mm) guns in two twin turrets fore and aft, supplemented by fourteen 6-inch (152 mm) quick-firing Elswick guns, twenty 3-inch (76 mm) guns, eight 47 mm guns, and four 18-inch (457 mm) torpedo tubes. She was protected by the latest Krupp cemented steel armor.

RUSSO-JAPANESE WAR AND THE BATTLE OF TSUSHIMA

Mikasa served as the flagship of Vice Admiral Togo Heihachiro, Commander-in-Chief of the Combined Fleet, throughout the Russo-Japanese War of 1904–1905. She led the 1st Fleet in the opening attack on the Russian Pacific Squadron at Port Arthur on 9 February 1904, fought in the Battle of the Yellow Sea on 10 August 1904, and most decisively at the Battle of Tsushima on 27–28 May 1905. At Tsushima, Togo executed his famous crossing of the T maneuver from Mikasa's bridge, destroying or capturing virtually the entire Russian Second and Third Pacific Squadrons. Of 38 Russian warships, 34 were sunk, captured, or interned. Russian casualties exceeded 5,000 dead and 6,000 captured, while Japan lost no major warships and suffered only 117 dead. It was one of the most decisive naval engagements in history and established Japan as a major world power.

On 11 September 1905, shortly after the Treaty of Portsmouth was signed, Mikasa's aft magazine accidentally exploded while she was anchored at Sasebo, killing 339 crew members and sinking her. She was raised, repaired, and returned to service before being decommissioned on 20 September 1923 following the Washington Naval Treaty.

ENSHRINEMENT AS A MEMORIAL (1926)

At the request of the Japanese government, all signatory nations to the Washington Naval Treaty agreed that Mikasa could be preserved as a memorial rather than scrapped, on the condition that her hull be permanently encased in concrete below the waterline to prevent any future military use. On 12 November 1926, Mikasa was formally opened as a memorial ship in Yokosuka in the presence of Crown Prince Hirohito (the future Emperor Showa) and the aged Admiral Togo himself.

WARTIME ROLE AS IMPERIAL NAVY SYMBOL (1930s–1945)

Although Mikasa was a relic of the Russo-Japanese War, she assumed profound symbolic significance during the militarist era of the 1930s and throughout World War II. The ship became the spiritual centerpiece of Navy Day (海軍記念日, Kaigun Kinenbi), observed annually on 27 May — the anniversary of the Battle of Tsushima. These commemorations, held at Mikasa Park with ceremonies aboard the ship, were used by the Imperial Japanese Navy and the government to inspire patriotic fervor, glorify the Navy's traditions, and rally public support for the war effort. Admiral Togo, who died in 1934 and was posthumously elevated to near-mythical status, was held up as the ideal of naval leadership, and Mikasa — his flagship — served as the physical embodiment of that legend. The ship was a mandatory pilgrimage site for naval cadets and officers, reinforcing the spiritual connection between the Russo-Japanese War victory and Japan's wartime ambitions. Mikasa remained in place at Yokosuka throughout World War II; in 1945 she was taken over by the Allied forces and the Mikasa Preservation Society was dissolved.

POSTWAR DEGRADATION UNDER OCCUPATION

After Japan's surrender in August 1945, American occupation authorities viewed Mikasa as a symbol of Japanese militarism. Under orders, the ship's masts, bridge, funnels, guns, and upper works were removed with cutting torches. The Soviet Union pressed for Mikasa's complete destruction. The stripped hull was converted into an entertainment venue: a Quonset hut was erected on her deck, and the ship housed an entertainment facility for American servicemen ("Cabaret Togo") and later an aquarium. By the early 1950s, the once-proud flagship had become a rusting, barely recognizable hulk.

RESTORATION (1959–1961)

The campaign to restore Mikasa gained momentum in the mid-1950s, driven by Japanese public sentiment and crucially supported by Fleet Admiral Chester W. Nimitz of the United States Navy. Nimitz, an admirer of Admiral Togo, lent his personal prestige to the restoration effort and helped counter Soviet objections. A nationwide fundraising campaign raised the necessary funds, supplemented by donations of materials and technical assistance from the U.S. Navy. Restoration work began in 1959 and was completed in 1961. The rebuilt Mikasa was reopened to the public on 27 May 1961, the 56th anniversary of the Battle of Tsushima. Her bow points north, toward the Imperial Palace in Tokyo — a deliberate symbolic orientation.

TODAY

Memorial Ship Mikasa is recognized as one of the "World's Three Great Memorial Warships" alongside HMS Victory (1765, Portsmouth, UK) and USS Constitution (1797, Boston, USA). The museum aboard features exhibits on the Russo-Japanese War, the Battle of Tsushima, Admiral Togo's leadership, naval technology of the era, and virtual reality experiences recreating the battle. A bronze statue of Admiral Togo stands in Mikasa Park facing the ship. The park itself, selected among Japan's Top 100 City Parks, features fountains, peace arches, and a waterfront promenade overlooking Tokyo Bay and the Yokosuka Naval Base.