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58-554: RV Petrel , or R/V Petrel (IMO: 9268629, MMSI: 235102789), is a 76.45 m (250.8 ft) research vessel sailing under the UK flag and owned by the United States Navy and once owned by Microsoft co-founder Paul Allen . The ship is named after the petrel , a sea bird. The ship was completed by Brattvaag Skipsverft, Norway in 2003 as the deepwater offshore inspection vessel Seaway Petrel for service with Stolt Offshore . She

116-509: A kamikaze , had been discovered on 25 May. She lies at a depth of 15,538 feet (4,736 m) on the edge of the Philippine Trench off the coast of Samar . She sits upright relatively intact, with notable battle damage. She is the first escort carrier to have been found. On 18 October 2019, Petrel announced they had discovered the wreck of the Japanese aircraft carrier  Kaga , off

174-433: A towed structure , for example, air cannons used to generate shock waves that sound strata beneath the seabed , or mounted on the keel , for example, a depth sounder . In practice, hydrographic survey vessels are often equipped to perform multiple roles. Some function also as oceanographic research ships. Naval hydrographic survey vessels often do naval research, for example, on submarine detection. An example of

232-632: A Japanese destroyer with a loss of 168 of her crew. The Royal Australian Navy 's submarine HMAS  AE1 , which was lost at sea with all hands on 14 September 1914, and only discovered in December 2017 on the seafloor off the Duke of York Islands in Papua New Guinea (PNG), was visited by Petrel ' s ROV. Petrel ' s crew devised a close-up camera to view details inside the torpedo tube and engine telegraph. This exploration published on 23 April 2018,

290-610: A US Navy team aboard, located and mapped the wreckage of a Grumman C-2 Greyhound aircraft that crashed into the Philippine Sea en route to USS  Ronald Reagan on 22 November 2017. On 4 March 2018, Petrel explored the Coral Sea and discovered the wreck of the aircraft carrier USS  Lexington , which sank during the Battle of the Coral Sea . On 17 March 2018, Petrel located

348-555: A depth of 22,621 ft (6,895 m). On 19 December 2019, it was announced that Petrel had located and surveyed the wrecks of the Philippine ferry, MV  Doña Paz and the oil tanker MT  Vector . Both wrecks were found 2,200 metres (7,200 ft) apart at a depth of 500 metres (1,600 ft) in the Sibuyan Sea . Both wrecks sit right side up and are in good condition. On 24 December 2019, news came out that Petrel and

406-434: A hydrographic survey vessel is CCGS Frederick G. Creed . For an example of the employment of a survey ship see HMS  Hydra . Oceanographic research vessels carry out research on the physical , chemical , and biological characteristics of water , the atmosphere , and climate , and to these ends carry equipment for collecting water samples from a range of depths, including the deep seas, as well as equipment for

464-523: A major incident shortly thereafter. Several specialist medical and rescue teams mobilised during the operation including HM Coastguard , NHS Lothian medical personnel and two Scottish Air Ambulances . Winds gusting between 38 and 44 miles per hour (61 and 71 km/h) were recorded around the time of the incident. A few weeks later, Petrel was successfully righted and refloated. [REDACTED] Media related to IMO 9268629 at Wikimedia Commons Research vessel The research ship had origins in

522-604: A number of standard Navis floats (2000-m profiles), and deep SOLO floats (6000-m profiles). As part of the Deep Argo project, a multiyear partnership between the NOAA Pacific Marine Environmental Laboratory (NOAA PMEL) and the Paul G. Allen Family Foundation, the project aimed for a final deployment of Deep Argo floats aboard Petrel . Thousands of these floats are freely drifting around the globe to measure

580-437: A number of these explorations to try to find sunken warships. We try to do these both as really exciting examples of underwater archaeology and as tributes to the brave men [who] went down on these ships". Petrel ' s other mission profile included hosting scientific projects under Allen's mother company, Vulcan Inc. Petrel explorations were coordinated with organizations around the world. For United States Navy wrecks,

638-399: A team from University of Hawaii School of Ocean and Earth Sciences and Technology (UH-SOEST) located and successfully recovered the latter's lost ROV named Luu'kai north of Oahu at a depth of 4,720 m (15,490 ft). The drone had broken its tether and was lost on the ocean floor on 20 July 2019. To retrieve Luu'kai , the team lowered a lift elevator and Petrel ' s ROV worked on

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696-462: Is a vessel designed to conduct hydrographic research and survey . Nautical charts are produced from this information to ensure safe navigation by military and civilian shipping . Hydrographic survey vessels also conduct seismic surveys of the seabed and the underlying geology . Apart from producing the charts, this information is useful for detecting geological features likely to bear oil or gas . These vessels usually mount equipment on

754-576: Is about a 120 square kilometers and that took us the course of a couple of months. It was about 26 days of searching". The Indianapolis wreck is upright with her hull and armaments intact and well preserved in the depth. Her bow number 35 was seen by the ROV. Rusticles or oxidized wrought iron were found by the crew emerging from one of the main guns of the ship. After discovering USS Indianapolis , Petrel sailed to Surigao City in October 2017 to participate in

812-514: Is common with contemporary research vessels, Endeavour also carried out more than one kind of research, including comprehensive hydrographic survey work. Some other notable early research vessels were HMS Beagle , RV Calypso , HMS Challenger , USFC Albatross , and the Endurance and Terra Nova . The names of early research vessels have been used to name later research vessels, as well as Space Shuttles . A hydrographic survey ship

870-505: Is pending confirmation by ROV exploration. The remaining 12 wreck locations were not identified during the expedition and require further study. After several years of searching, the same team discovered the Japanese battleship  Musashi in March 2015. In August 2015, the team recovered the bell of HMS  Hood after obtaining license from the UK Ministry of Defence . The recovery of

928-506: The Antarctic , where they function also as polar replenishment and supply vessels to the Antarctic research bases. Examples of polar research vessels include USCGC Polar Star , RSV Aurora Australis and RSV Nuyina . Oil exploration is performed in a number of ways, one of the most common being mobile drilling platforms or ships that are moved from area to area as needed to drill into

986-489: The Bath Iron Works Corporation at Bath, Maine on 27 September 1941 and launched on 28 June 1942 by Miss H. N. De Haven, granddaughter of Lieutenant De Haven. The ship was commissioned on 21 September 1942, Commander Charles E. Tolman in command. De Haven sailed from Norfolk, Va. and reached Tongatapu , Tonga Islands , 28 November 1942 to escort a convoy of troopships to Guadalcanal to relieve

1044-644: The Japanese cruiser  Jintsū 's wreckage was discovered by Petrel near the mouth of Kula Gulf in the Solomon Islands. The broken cruiser rests in 900 m (3,000 ft) of water. Her bow section is lying on its port side and the stern section is upright. On 6 February 2019, the discovery of the Japanese battleship  Hiei was announced, the first Japanese battleship sunk in World War II. According to Petrel , Hiei now lies upside down in 900 m (3,000 ft) of water northwest of Savo Island in

1102-571: The Marines who had been there since the invasion landings in August. De Haven screened the transports off Guadalcanal from 7 to 14 December, then sailed out of Espiritu Santo and Nouméa in the continuing Solomon Islands operations . She patrolled in the waters of the Southern Solomons to stop the " Tokyo Express ", the nightly effort to supply the beleaguered Japanese troops still fighting on

1160-600: The NOAAS Ronald H. Brown and the Chilean Navy Cabo de Hornos . A fisheries research vessel requires platforms capable of towing different types of fishing nets , collecting plankton or water samples from a range of depths, and carrying acoustic fish-finding equipment. Fisheries research vessels are often designed and built along the same lines as a large fishing vessel , but with space given over to laboratories and equipment storage, as opposed to storage of

1218-663: The Yamato Museum . The project crew was aboard Allen's Octopus operating the megayacht 's crewed-submersible Pagoo , Argus 3000 remotely operated vehicle (ROV) and Bluefin 12D autonomous underwater vehicle (AUV). The 20 civilian marine crew and 10 project crew worked on 12-hour shifts aboard Petrel . The project crew consisted of Kraft the expedition leader, Mayer as lead researcher, four ROV pilots and technicians, one AUV specialist, one multibeam surveyor, one videographer, and one systems support engineer. For each expedition, local historians, scientists, and observers complemented

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1276-580: The Yūgumo -class destroyers found in 2017. Based on the 127 mm (5 in) guns and armament configuration, she was identified to be Hamanami . The identification also validated the final resting places of the other ships of the lost Japanese convoy TA-4: the destroyers Shimakaze , Wakatsuki and Naganami . The convoy was attacked by aircraft from Task Force 38 in the Battle of Ormoc Bay . Petrel and Octopus also dove their crewed submersible Pagoo on USS Cooper. In February 2018, Petrel , with

1334-471: The hydrographic sounding of the seabed, along with numerous other environmental sensors. These vessels often also carry scientific divers and unmanned underwater vehicles . Since the requirements of both oceanographic and hydrographic research are very different from those of fisheries research, these boats often fulfill dual roles. Recent oceanographic research campaigns include GEOTRACES and NAAMES . Examples of an oceanographic research vessel include

1392-506: The 73rd commemoration of the Battle of Surigao Strait . In November 2017, after gaining approval from the Philippines' National Museum, Petrel surveyed Surigao Strait and discovered the wrecks of the Japanese battleships Yamashiro , Fusō , and the destroyers Michishio , Yamagumo , and Asagumo . Each one was investigated by the ship's ROV and an onboard local historian confirmed

1450-572: The Atlantic Ocean, giving detailed bathymetry readings from 400 to 4,800 m (1,300 to 15,700 ft) depths. On 11 June 2020, the Petrel ' s Facebook page announced that the vessel was going to be moored indefinitely. The announcement read: The impact of the COVID-19 crisis has changed the world for the long term in ways that we never could have imagined. As a result of operational challenges from

1508-550: The Italian Regia Marina World War II destroyer Artigliere in March 2017. Petrel found USS  Indianapolis in August 2017. Indianapolis was located on 19 August 2017 at a depth of 5,500 m (18,000 ft) in the Philippine Sea. The discovery introduced Petrel as Paul Allen's newest addition to his expedition fleet. Kraft said of the elusive Indianapolis , "We did 18 search grids, each one

1566-596: The Solomon Islands. Hiei is the fourth Japanese battleship found by Petrel ' s crew. The Japanese battleship  Musashi was found in March 2015, and the Fusō -class battleships Fusō and Yamashiro were found in November 2017. Petrel was also able to survey another Kongō -class battlecruiser , Kirishima , in a separate mission. Lead researcher Paul Mayer said that Hiei lies 4 nautical miles (7.4 km; 4.6 mi) away from Kirishima . On 12 February 2019,

1624-589: The bell was performed upon the request of the HMS Hood Association. Only three of HMS Hood ' s crew survived and it was the wish of one of them to recover ship's bell as a memorial to shipmates. The bell from HMS Hood was unveiled by the Princess Royal on 24 May 2016 to mark the 75th anniversary of the Royal Navy 's largest loss of life (1,415 sailors) from a single vessel. While on board Octopus ,

1682-569: The catch. An example of a fisheries research vessel is FRV Scotia . Naval research vessels investigate naval concerns, such as submarine and mine detection or sonar and weapons trials. An example of a naval research vessel is the Planet of the German Navy . Polar research vessels are constructed around an icebreaker hull, allowing them to engage in ice navigation and operate in polar waters. These vessels usually have dual roles, particularly in

1740-520: The coast of Midway Atoll . She lies right side up, but with heavy battle damage, 5,400 metres (17,700 ft) below the surface. She is the first Japanese aircraft carrier to have been found. On 20 October 2019, the director of undersea operations Rob Kraft and Naval History and Heritage Command historian Frank Thompson aboard Petrel identified the wreck of the Japanese aircraft carrier  Akagi using high-frequency sonar. Located 1,300 miles (2,100 km) north west of Pearl Harbor , Hawaii, Akagi

1798-541: The collection of ocean data and science". After a drydocking in Florida , Petrel sailed for Leith , Scotland, on 16 August 2020 and arrived on 3 September to be laid up. In October 2022, Petrel was purchased by the United States Navy for its Naval Facilities Engineering and Expeditionary Warfare Center (NAVFAC EXWC), to be operated by the American company Oceaneering International . The ship, plus associated spare parts,

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1856-403: The crew announced they had located the wreck of the aircraft carrier USS  Hornet at a depth of more than 17,700 ft (5,400 m) off the Solomon Islands. She is in remarkably good condition. She sits right-side up with her island still in place. A portion of her flight deck has collapsed due to the fire that raged on her decks during the battle. A portion of her stern is torn away, but

1914-426: The detonation of her depth charges and lies in a compact debris field that includes the ship's boilers, propellers, and wheelhouse. On 13 March 2019, the crew announced they had located the wreck of the aircraft carrier, USS  Wasp resting at a depth of 13,800 feet (4,200 m). The ship sits upright, though appears to have broken in two places, just forward and just aft of the island, apparently on impact with

1972-628: The early voyages of exploration. By the time of James Cook 's Endeavour , the essentials of what today we would call a research ship are clearly apparent. In 1766, the Royal Society hired Cook to travel to the Pacific Ocean to observe and record the transit of Venus across the Sun . The Endeavour was a sturdy vessel, well designed and equipped for the ordeals she would face, and fitted out with facilities for her "research personnel", Joseph Banks . As

2030-400: The hull remains mostly intact. Several aircraft are scattered among the wreck. On 26 February 2019, the crew announced they had located the wreck of the destroyer USS  Strong , resting at a depth of 1,000 ft (300 m). She rests in pieces, the largest of which is the heavily damaged forward section of the ship lying on its port side. The rest of the ship was largely fragmented by

2088-528: The identity of the wreck. In December 2017, Petrel explored Ormoc Bay and discovered the wrecks of the American destroyers USS  Ward , USS  Cooper , the Japanese destroyer  Shimakaze , and what is believed to be two Yūgumo -class destroyers. The discovery of the wreck of USS Ward was a central theme for the 76th commemoration of the Attack on Pearl Harbor on 7 December. In early January 2018, Petrel returned to Ormoc Bay and dived one of

2146-588: The invaded islands, and took part in two bombardments of Kolombangara island during January 1943. On 1 February 1943, De Haven screened six LCTs and a seaplane tender establishing a beachhead at Maravovo on Guadalcanal. While escorting two of the landing craft back to their base in the afternoon, De Haven was warned of an impending air attack by Japanese aircraft supporting Operation Ke . She sighted nine unidentified planes and opened fire as six swung sharply toward her. She shot down three of these planes, but not before all six had dropped their bombs. De Haven

2204-440: The light cruiser Atlanta . Eleven wrecks were "tentatively" identified to be the Japanese destroyers Ayanami , Yūdachi and Fubuki , and the American destroyers USS  Walke , USS  De Haven , USS  Laffey , USS  Monssen , USS  Barton , USS  Cushing , USS  Little , and USS  Preston . The identification using the sonar imagery with vessel measurements and historical records

2262-510: The main part of the wreck, which is upright and the bridge is about 2,000 ft (610 m) away. On 1 July 2019, it was announced that the wreck of the Japanese cruiser  Maya had been found off the coast of the Philippine island of Palawan . She is mostly intact, with the exception of her forward bow, which broke off and is lying upside down just astern of the rest of the ship. Her bridge and guns are also intact. She lies in 1,850 m (6,070 ft) of water. On 9 September 2019, it

2320-512: The pandemic, R/V Petrel will be placed into long-term moorage and she will not be deployed for the foreseeable future. We were tasked with a monumental mission — discover, educate, and honor — and we're hopeful we will eventually be back in service". Robert Kraft, subsea director, said, "I am proud of the successful Petrel missions that have brought information and closure to so many families and friends of WWII heroes. I am hopeful that Petrel will eventually be back in service, supporting

2378-508: The primary mission of the ship, which was fully funded by Allen's estate, was to explore historically significant wrecks at challenging depths and conditions. A precondition set by Allen was for discovered wrecks to be respected as war graves and their locations kept secret, known to only national governments and museums. In the PBS documentary USS Indianapolis Live from the Deep , Allen said, "We've done

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2436-612: The project crew deployed a Bluefin 12D AUV and mapped 630 km (243 sq mi) of seabed around Malta in September 2015. Sonar images of shipwrecks, several aircraft, torpedoes , and debris field were captured by the AUV. Following the Musashi discovery and the Hood expedition in 2015, Allen bought Petrel in 2016, refitting her as a dedicated research and exploration platform. Petrel found

2494-475: The project crew. The team, while on board Octopus , mapped 380 sq mi (980 km) of Ironbottom Sound in January 2015, identified 29 wreck locations, seven wreck debris fields, and several possible plane locations. Of the 29 wrecks located, six were positively identified and confirmed to be the heavy cruisers USS  Astoria , Quincy , Vincennes , Northampton , and HMAS  Canberra , and

2552-579: The recovery procedure. Luu'kai was recovered by the joint team on 29 August 2019. After finding Kaga and Akagi , Petrel crossed the Pacific in the fourth quarter of 2019 and stationed in the Atlantic Ocean to launch Deep Argo floats beginning January 2020. Through several weeks in January 2020, in the Brazil Basin of the Atlantic, Petrel and National Oceanic and Atmospheric Administration (NOAA) deployed

2610-456: The seabed to find out what deposits lie beneath it. USS De Haven (DD-469) USS De Haven (DD-469) was a Fletcher -class destroyer of the United States Navy , the first Navy ship named for Lieutenant Edwin J. De Haven USN (1819–1865). De Haven was the first Fletcher -class ship lost in World War II , having been in commission only 133 days. De Haven was laid down by

2668-403: The seabed. The island itself is still in place, though the funnel structure was ripped off during the sinking. Several aircraft were also found in the debris field, including Dauntlesses and Avengers. On 4 May 2019, the crew announced they had located the wreck of the Japanese heavy cruiser Furutaka at a depth of 4,600 ft (1,400 m). She lies in two sections, with the bow sitting near

2726-626: The team collaborated with the Naval History and Heritage Command . In the Philippines, the crew worked with the National Museum and the Battle of Surigao Strait Memorial Council. In 2018, Petrel worked with Australian National Maritime Museum to explore HMAS  AE1 . Robert Kraft, who served as subsea director for Allen, and Paul Mayer, Petrel ' s lead researcher, traveled to Japan to hand over ROV video of Imperial Japanese Navy wrecks to

2784-473: The temperature, salinity, and turbidity of the upper ocean, at depths down to 2,000 m (6,600 ft) and deeper to 6,000 m (20,000 ft). The Foundation committed $ 4 million to NOAA to help implement the Deep Argo effort. In June 2020, Petrel had a Kongsberg EM124 1°x2° full ocean MBES installed. A sub-bottom profiler, a Kongsberg SBP 29 6° system, was also installed on the ship. Both were tested in

2842-440: The wreck of the antiaircraft light cruiser USS  Juneau . Juneau was sunk by the Japanese submarine  I-26 in the aftermath of the first Naval Battle of Guadalcanal , sinking with the loss of 687 men, which included the five Sullivan brothers . On 11 April 2018, Petrel located the wreck of the light cruiser USS  Helena . Helena was sunk during the Battle of Kula Gulf in 1943 by three torpedoes fired from

2900-488: The wreck was heavily damaged, her mast is still attached and complete. The find of Niizuki was noteworthy because she was credited for sinking USS  Strong with the longest torpedo shot ever, with estimates ranging from 7 to 11 nautical miles (13 to 20 km; 8.1 to 12.7 mi). Niizuki ' s discovery is also noteworthy as the photos of the wreck are the first photos of the ship to exist; no photos of her in service are known to have been taken. In February 2019,

2958-490: The year, the wreck of the Japanese cruiser  Chōkai on the edge of the Philippine Deep . She lies upright with her bow section torn off, 5,173 metres (16,972 ft) deep. On 30 October 2019, it was announced that the wreckage of a destroyer believed to be USS  Johnston had been located. She was believed to have been the deepest ever located shipwreck, estimated at 20,406 feet (6,220 m) deep. Her identity

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3016-467: Was announced that the wreck of the Japanese cruiser  Mogami had been found in the Bohol Sea . She lies mostly intact, with the exception of her forward bow, which has been blown off, but lying nearby. She sits straight side up at a depth of 1,450 m (4,760 ft). On 10 October 2019, it was announced that the wreck of the escort carrier , USS  St. Lo , the first ship to have been sunk by

3074-415: Was confirmed on 31 March 2021, when the submersible DSV Limiting Factor of Caladan Oceanic surveyed and photographed the deeper main wreck. The visible hull number, 557, confirmed the identity of the ship as Johnston . She sits upright and well-preserved at a depth of 21,180 ft (6,460 m). The record was broken when the wreck of USS Samuel B. Roberts (DE-413) was found the following year, lying at

3132-402: Was found at a depth of 18,011 feet (5,490 m). It is reported that the wreck is upright, on her keel, and is largely intact. Due to damage sustained by the ROV during recovery from the preceding survey of Kaga , and a number of other factors, Petrel was unable to conduct a photographic survey of Akagi . On 26 October 2019, the search team announced they had discovered, on 5 May earlier in

3190-534: Was hit by three bombs and further damaged by a near miss. One bomb hit the superstructure squarely, killing the commanding officer instantly. All was lost after the first hit and the ship began to settle rapidly, sinking in Ironbottom Sound about 2 nautical miles (3.7 km; 2.3 mi) east of Savo Island . One of the LCTs she had escorted rescued the survivors. De Haven lost 167 killed and 38 wounded. Her wreck

3248-544: Was later renamed Acergy Petrel , then Seven Petrel with Subsea 7 . In 2016, the ship was purchased by Allen, renamed Petrel and converted for deep-submergence research and archeology. Over two dozen wrecks were explored and recorded between 2017 and 2020, when the ship was laid up. In October 2022, she was purchased by the United States Navy's Naval Facilities Engineering Systems Command , for operation under Oceaneering International management. Prior to 2020,

3306-467: Was purchased for $ 12,400,000. On 22 March 2023, whilst dry-docked at Imperial Dock in Leith, Edinburgh, the vessel became dislodged from her holdings in strong winds and toppled over to an angle of 45 degrees. This resulted in 33 people being injured, with 21 taken to hospital and 12 treated at the scene. Police Scotland were alerted to the incident at 8:35am local time, with Scottish emergency services declaring

3364-773: Was supervised by Find AE1 Ltd in partnership with the Australian National Maritime Museum, the Royal Australian Navy, Curtin University , the Western Australian Museum , and the Submarine Institute of Australia. The approval for the survey was granted by Papua New Guinea National Museum and Art Gallery . Petrel found the wreck of the Japanese destroyer  Niizuki upright in 745 m (2,444 ft) of water in January 2019. While

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