(also ''Ryō Un Maru'') was a Japanese

fishing boat A fishing vessel is a boat or ship used to catch fish in the sea, or on a lake or river. Many different kinds of vessels are used in commercial, artisanal and recreational fishing. The total number of fishing vessels in the world in 2016 was es ...

that was washed away from its mooring in

Aomori Prefecture is a prefecture of Japan in the Tōhoku region. The prefecture's capital, largest city, and namesake is the city of Aomori. Aomori is the northernmost prefecture on Japan's main island, Honshu, and is bordered by the Pacific Ocean to the east, ...

by the March

2011 Tōhoku earthquake and tsunami The occurred at 14:46 JST (05:46 UTC) on 11 March. The magnitude 9.0–9.1 (M) undersea megathrust earthquake had an epicenter in the Pacific Ocean, east of the Oshika Peninsula of the Tōhoku region, and lasted approximately six minutes ...

and drifted across the

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...

. It was spotted a year later by a routine

Royal Canadian Air Force The Royal Canadian Air Force (RCAF; french: Aviation royale canadienne, ARC) is the air and space force of Canada. Its role is to "provide the Canadian Forces with relevant, responsive and effective airpower". The RCAF is one of three environm ...

air patrol about off the coast of

Haida Gwaii Haida Gwaii (; hai, X̱aaydag̱a Gwaay.yaay / , literally "Islands of the Haida people") is an archipelago located between off the northern Pacific coast of Canada. The islands are separated from the mainland to the east by the shallow Hecat ...

British Columbia British Columbia (commonly abbreviated as BC) is the westernmost province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include rocky coastlines, sandy beaches, ...

. The unmanned hulk entered U.S. waters on 1 April 2012, and, after salvage attempts failed, was sunk by the U.S. Coast Guard on 5 April 2012 to prevent the hulk from becoming a hazard to navigation.

History

120405-G-RS249-005-USCG responds to Japanese vessel in Gulf of Alaska

The ''Ryou-Un Maru'', a

fishing vessel A fishing vessel is a boat or ship used to catch fish in the sea, or on a lake or river. Many different kinds of vessels are used in commercial, artisanal and recreational fishing. The total number of fishing vessels in the world in 2016 was es ...

in the Japanese merchant fleet, was originally built around 1982. It was owned by a

Hokkaido is Japan's second largest island and comprises the largest and northernmost prefecture, making up its own region. The Tsugaru Strait separates Hokkaidō from Honshu; the two islands are connected by the undersea railway Seikan Tunnel. The la ...

-based fishing company and was used for

shrimping The shrimp fishery is a major global industry, with more than 3.4 million tons caught per year, chiefly in Asia. Rates of bycatch are unusually high for shrimp fishing, with the capture of sea turtles being especially contentious. A shrimper is a ...

squid True squid are molluscs with an elongated soft body, large eyes, eight arms, and two tentacles in the superorder Decapodiformes, though many other molluscs within the broader Neocoleoidea are also called squid despite not strictly fitting t ...

ding. After a long service career the ship's owner decided it was too old for continued use and moored it in

Honshu , historically called , is the largest and most populous island of Japan. It is located south of Hokkaidō across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyūshū across the Kanmon Straits. The island separ ...

pending sale. When the Tōhoku earthquake and tsunami struck in March 2011, ''Ryou-Un Maru'' broke free and was set adrift. Like most countries, Japanese law requires a ship be disposed of or dismantled properly before allowing its registration to be canceled. However, all parties assumed the vessel sank in the disaster, so the

Japan Coast Guard The is the coast guard of Japan. The Japan Coast Guard consists of about 13,700 personnel and is responsible for the protection of the coastline of Japan under the oversight of the Ministry of Land, Infrastructure, Transport and Tourism. Th ...

granted the owner an exception. For over a year the ''Ryou-Un Maru'' drifted across the Pacific as a

ghost ship A ghost ship, also known as a phantom ship, is a vessel with no living crew aboard; it may be a fictional ghostly vessel, such as the ''Flying Dutchman'', or a physical derelict found adrift with its crew missing or dead, like the ''Mary Celest ...

and was carried eastward by the

Kuroshio Current The , also known as the Black or or the is a north-flowing, warm ocean current on the west side of the North Pacific Ocean basin. It was named for the deep blue appearance of its waters. Similar to the Gulf Stream in the North Atlantic, the Ku ...

. On 20 March 2012, it was spotted in Canadian waters by

CP-140 Aurora The Lockheed CP-140 Aurora is a patrol aircraft, maritime patrol aircraft operated by the Royal Canadian Air Force. The aircraft is based on the Lockheed P-3 Orion airframe, but mounts the electronics suite of the Lockheed S-3 Viking. Aurora ( ...

aircraft. As its registration had been canceled, the ship no longer had a legal owner responsible for it. On 4 April 2012, the

U.S. Coast Guard The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. The service is a maritime, military, mul ...

dropped a tracking

buoy A buoy () is a floating device that can have many purposes. It can be anchored (stationary) or allowed to drift with ocean currents. Types Navigational buoys * Race course marker buoys are used for buoy racing, the most prevalent form of yac ...

aboard as the vessel drifted approximately southwest of

Sitka, Alaska russian: Ситка , native_name_lang = tli , settlement_type = Consolidated city-borough , image_skyline = File:Sitka 84 Elev 135.jpg , image_caption = Downtown Sitka in 1984 , image_size ...

. The next day, the crew of the U.S. Coast Guard Cutter assessed the ship's condition. On 5 April 2012, the Canadian fishing vessel ''Bernice C'' attempted to salvage the stricken vessel, but a ruptured fuel tank proved impossible to pump out and a tow failed. The U.S. Coast Guard then determined that sinking the abandoned vessel was necessary to prevent it running aground or becoming a hazard to navigation. USCGC ''Anacapa'' fired upon it with a Mk 38 25mm autocannon, holing and sinking the ''Ryou-Un Maru'' in approximately of water in the

Gulf of Alaska The Gulf of Alaska (Tlingit: ''Yéil T'ooch’'') is an arm of the Pacific Ocean defined by the curve of the southern coast of Alaska, stretching from the Alaska Peninsula and Kodiak Island in the west to the Alexander Archipelago in the east, ...

off the coast of the Alaskan Panhandle.

References

External links

U.S. Coast Guard photos of shellingU.S. Coast Guard video of the ship being fired uponMFV Ryou-Un Maru (+2012)
Wrecksite.eu {{DEFAULTSORT:Ryo Un Maru 2011 Tōhoku earthquake and tsunami Fishing vessels of Japan Shipwrecks in the Pacific Ocean Maritime incidents in 2012 1982 ships Maritime incidents in 2011 Ghost ships