HOME

TheInfoList



OR:

''Akagi Maru'' was one of three of the
Imperial Japanese Navy The Imperial Japanese Navy (IJN; Kyūjitai: Shinjitai: ' 'Navy of the Greater Japanese Empire', or ''Nippon Kaigun'', 'Japanese Navy') was the navy of the Empire of Japan from 1868 to 1945, Potsdam Declaration, when it was dissolved followin ...
, and was launched in 1936. ''Akagi Maru'' was used initially used as a refrigerated cargo/passenger ship between ports in Japan, Europe and South America. The ship took part in
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
in the Pacific Ocean and was sunk with great loss of life by air attack on 17 February 1944 in
Chuuk Lagoon Chuuk Lagoon, previously Truk Atoll, is an atoll in the central Pacific Ocean. It lies about 1,800 kilometres (970 nautical miles) northeast of New Guinea and is part of Chuuk State within the Federated States of Micronesia (FSM). A protective ...
as a part of the
Allied An alliance is a relationship among people, groups, or states that have joined together for mutual benefit or to achieve some common purpose, whether or not an explicit agreement has been worked out among them. Members of an alliance are calle ...
Operation Hailstone Operation Hailstone was a large-scale United States Navy air and surface attack on Truk Lagoon on 17–18 February 1944, conducted as part of the American offensive drive against the Imperial Japanese Navy in the Pacific Ocean theatre of Worl ...
.


Description

''Akagi Maru'' was initially a refrigerated cargo/
passenger ship A passenger ship is a merchant ship whose primary function is to carry passengers on the sea. The category does not include cargo vessels which have accommodations for limited numbers of passengers, such as the ubiquitous twelve-passenger freig ...
that was
long between perpendiculars Length between perpendiculars (often abbreviated as p/p, p.p., pp, LPP, LBP or Length BPP) is the length of a ship along the summer load line from the forward surface of the stem, or main bow perpendicular member, to the after surface of the stern ...
with a
beam Beam may refer to: Streams of particles or energy *Light beam, or beam of light, a directional projection of light energy **Laser beam *Radio beam *Particle beam, a stream of charged or neutral particles **Charged particle beam, a spatially lo ...
of and a draught of . The ship was powered by an 8-cylinder, 2-stroke
Mitsubishi The is a group of autonomous Japanese multinational companies in a variety of industries. Founded by Yatarō Iwasaki in 1870, the Mitsubishi Group traces its origins to the Mitsubishi zaibatsu, a unified company that existed from 1870 to 194 ...
Sulzer
diesel engine The diesel engine, named after the German engineer Rudolf Diesel, is an internal combustion engine in which Combustion, ignition of diesel fuel is caused by the elevated temperature of the air in the cylinder due to Mechanics, mechanical Compr ...
rated at driving one
shaft Shaft may refer to: Rotating machine elements * Shaft (mechanical engineering), a rotating machine element used to transmit power * Line shaft, a power transmission system * Drive shaft, a shaft for transferring torque * Axle, a shaft around whi ...
. This gave the ship a maximum speed of . The ship's gross register tonnage while a passenger ship was 7,387 tons. After conversion to an
armed merchantman An armed merchantman is a merchant ship equipped with guns, usually for defensive purposes, either by design or after the fact. In the days of sail, piracy and privateers, many merchantmen would be routinely armed, especially those engaging in ...
, ''Akagi Maru'' was fitted with four /50
calibre In guns, particularly firearms, but not artillery, where a different definition may apply, caliber (or calibre; sometimes abbreviated as "cal") is the specified nominal internal diameter of the gun barrel bore – regardless of how or wher ...
low-angle guns and light anti-aircraft guns.


Construction and early service

''Akagi Maru'' was built in 1936 at
Mitsubishi The is a group of autonomous Japanese multinational companies in a variety of industries. Founded by Yatarō Iwasaki in 1870, the Mitsubishi Group traces its origins to the Mitsubishi zaibatsu, a unified company that existed from 1870 to 194 ...
's shipyard in
Nagasaki , officially , is the capital and the largest Cities of Japan, city of Nagasaki Prefecture on the island of Kyushu in Japan. Founded by the Portuguese, the port of Portuguese_Nagasaki, Nagasaki became the sole Nanban trade, port used for tr ...
with the
yard number The yard (symbol: yd) is an English unit of length in both the British imperial and US customary systems of measurement equalling 3 feet or 36 inches. Since 1959 it has been by international agreement standardized as exactly 0.9 ...
627 for the
Nippon Yusen Kaisha The , also known as NYK Line, is a Japanese shipping company. The company headquarters are located in Chiyoda, Tokyo, Japan. It operates a fleet of over 820 ships, which includes container ships, tankers, bulk and woodchip carriers, roll-on/ro ...
(NYK). The ship's
keel The keel is the bottom-most longitudinal structural element of a watercraft, important for stability. On some sailboats, it may have a fluid dynamics, hydrodynamic and counterbalancing purpose as well. The keel laying, laying of the keel is often ...
was
laid down Laying the keel or laying down is the formal recognition of the start of a ship's construction. It is often marked with a ceremony attended by dignitaries from the shipbuilding company and the ultimate owners of the ship. Keel laying is one ...
on 2 December 1935 and was launched and named on 6 June 1936. The ship was
registered Registered may refer to: * Registered mail, letters, packets or other postal documents considered valuable and in need of a chain of custody * Registered trademark symbol, symbol ® that provides notice that the preceding is a trademark or service ...
in
Tokyo Tokyo, officially the Tokyo Metropolis, is the capital of Japan, capital and List of cities in Japan, most populous city in Japan. With a population of over 14 million in the city proper in 2023, it is List of largest cities, one of the most ...
. After completion on 10 September, ''Akagi Maru'' sailed for NYK between Japan, Europe and South America until it was requisitioned by the
Imperial Japanese Navy The Imperial Japanese Navy (IJN; Kyūjitai: Shinjitai: ' 'Navy of the Greater Japanese Empire', or ''Nippon Kaigun'', 'Japanese Navy') was the navy of the Empire of Japan from 1868 to 1945, Potsdam Declaration, when it was dissolved followin ...
in November 1941 and converted to an
auxiliary cruiser An armed merchantman is a merchant ship equipped with guns, usually for defensive purposes, either by design or after the fact. In the days of sail, piracy and privateers, many merchantmen would be routinely armed, especially those engaging in lo ...
.


Naval history

The armed merchant cruiser returned to service in December 1941 following her conversion. ''Akagi Maru'' then performed patrol missions in northern waters for most of 1942, operating mainly from
Kushiro is a city in Kushiro Subprefecture on the island of Hokkaido, Japan. Located along the coast of the North Pacific Ocean, it serves as the subprefecture's capital and it is the most populated city in the eastern part of the island. History An ...
and
Yokosuka is a city in Kanagawa Prefecture, Japan. , the city has a population of 373,797, and a population density of . The total area is . Yokosuka is the 11th-most populous city in the Greater Tokyo Area, and the 12th in the Kantō region. The city i ...
. During this period, ''Akagi Maru'' took part in the searches for the lost
picket boat A picket boat is a type of small naval craft. These are used for harbor patrol and other close inshore work, and have often been carried by larger warships as a ship's boat. They are usually 30 to 55 feet long. Patrol boats, or any craft engaged ...
s ''Eikichi Maru'' and ''Ebisu Maru No. 5''. Both were found and returned to port, with the latter having been shelled by the
United States Navy The United States Navy (USN) is the naval warfare, maritime military branch, service branch of the United States Department of Defense. It is the world's most powerful navy with the largest Displacement (ship), displacement, at 4.5 millio ...
submarine A submarine (often shortened to sub) is a watercraft capable of independent operation underwater. (It differs from a submersible, which has more limited underwater capability.) The term "submarine" is also sometimes used historically or infor ...
. Beginning on 10 March 1943, ''Akagi Maru'' began a
troop transport Troop transport may be: * Troopship * Military Railway Service (United States) * Military transport aircraft A military transport aircraft, military cargo aircraft or airlifter is a military aircraft, military-owned transport aircraft used ...
mission, carrying the Fifth Independent Mixed Regiment. Following the transport mission, the armed merchantman returned to patrol duty operating out of Yokosuka. In December, ''Akagi Maru'' performed its second trooping mission, carrying units to
Wake Island Wake Island (), also known as Wake Atoll, is a coral atoll in the Micronesia subregion of the Pacific Ocean. The atoll is composed of three islets – Wake, Wilkes, and Peale Islands – surrounding a lagoon encircled by a coral reef. The neare ...
. The following month on 15 January 1944, ''Akagi Maru'' sailed for Wake Island again, but the
convoy A convoy is a group of vehicles, typically motor vehicles or ships, traveling together for mutual support and protection. Often, a convoy is organized with armed defensive support and can help maintain cohesion within a unit. It may also be used ...
was intercepted by the submarine . The submarine fired four
torpedo A modern torpedo is an underwater ranged weapon launched above or below the water surface, self-propelled towards a target, with an explosive warhead designed to detonate either on contact with or in proximity to the target. Historically, such ...
es at the convoy, with two of them striking the escorting
destroyer In naval terminology, a destroyer is a fast, maneuverable, long-endurance warship intended to escort larger vessels in a fleet, convoy, or carrier battle group and defend them against a wide range of general threats. They were conceived i ...
. Following the attack, ''Akagi Maru'' was directed to return to Japan.


Sinking

On 25 January 1944 she departed Tateyama for Truk as a troop transport, which arrived there on 1 February 1944. In the morning of 18 February 1944, ''Akagi Maru'' departed Truk for Yokosuka, with 617 passengers in convoy 4215. She was escorted by the
light cruiser A light cruiser is a type of small or medium-sized warship. The term is a shortening of the phrase "light armored cruiser", describing a small ship that carried armor in the same way as an armored cruiser: a protective belt and deck. Prior to thi ...
, destroyers and , and minesweeping trawler ''Shonan Maru No. 15''. Half an hour later, the convoy came under a massive attack from
Grumman F6F Hellcat The Grumman F6F Hellcat is an American Carrier-based aircraft, carrier-based fighter aircraft of World War II. Designed to replace the earlier Grumman F4F Wildcat, F4F Wildcat and to counter the Japanese Mitsubishi A6M Zero, it was the United St ...
fighters and
Grumman TBF Avenger The Grumman TBF Avenger (designated TBM for aircraft manufactured by General Motors) is an American World War II-era torpedo bomber developed initially for the United States Navy and Marine Corps, and eventually used by several air and naval a ...
torpedo bombers from the United States
aircraft carrier An aircraft carrier is a warship that serves as a seagoing airbase, equipped with a full-length flight deck and hangar facilities for supporting, arming, deploying and recovering carrier-based aircraft, shipborne aircraft. Typically it is the ...
s , , , and . At 0730, a bomb hit her forward hold No. 2 and caused heavy damage. At 0910, she took a direct hit by another 500 lb bomb in her starboard hold No. 5. The bomb ignited fuel in nearby tanks and a large fire broke out. At 0955, ''Akagi Maru'' took a third hit by a bomb in her port No. 5 hold, which made the ship stop and caused several large explosions. At 1030, Abandon Ship was ordered, and survivors were taken aboard ''Katori'' but perished later in the morning with her. ''Akagi Maru'' sank at 1047 at position 07-50N, 151-25E in the vicinity of the North Pass. A total of 512 passengers and 788 sailors were lost.


References

{{Coord, 07, 50, N, 151, 25, E, type:waterbody, display=title Ships built by Mitsubishi Heavy Industries 1936 ships Maritime incidents in February 1944 Auxiliary ships of the Imperial Japanese Navy Shipwrecks of Truk Lagoon Ships sunk by US aircraft