Stellar Daisy

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History
Name:
  • Sunrise III (1993–2006)
  • Sunrise (2006–2008)
  • Stellar Daisy (2008–2017)
Owner: VP-14 Shipping Inc, Majuro
Operator: Polaris Shipping Co Ltd, Seoul
Port of registry:
Route: Brazil—China
Ordered: 1990
Builder: Mitsubishi Heavy Industries Nagasaki Shipyard & Machinery Works, Nagasaki, Japan
Yard number: 2072
Laid down: July 23, 1992
Launched: February 25, 1993
Completed: July 2, 1993
Identification:
Fate: Sank off the coast of Uruguay on March 31, 2017
General characteristics [2]
Type: Ore carrier
Tonnage:
  • 148,431 GT
  • 44,530 NT
  • 266,141 DWT
Length: 321.95 m (1,056 ft 3 in)
Beam: 58 m (190 ft 3 in)
Draught: 20.326 m (66 ft 8 in)
Depth: 29.5 m (96 ft 9 in)
Installed power: 9-cylinder diesel engine, 21,928 kW
Propulsion: Single shaft; fixed pitch propeller
Speed: 15.5 knots (28.7 km/h; 17.8 mph)
Crew: 24

MV Stellar Daisy was a South Korean-owned very large ore carrier (VLOC)[1] that sank on March 31, 2017 in the South Atlantic off the coast of Uruguay whilst on a voyage from Brazil to China.

Career

Stellar Daisy was originally built as a very large crude carrier (VLCC) Sunrise III at Mitsubishi Heavy Industries Nagasaki Shipyard & Machinery Works in Nagasaki, Japan. She was laid down on July 23, 1992, launched on February 25, 1993 and delivered to the owners on July 2, 1993.[2]

In 1992, the International Convention for the Prevention of Pollution from Ships (MARPOL) was amended so that all oil tankers of 5,000 DWT or above ordered after July 6, 1993 were required to have a double hull in way of cargo tanks to reduce the possibility of oil spill in the event of hull damage. However, following several high-profile shipwrecks leading to significant environmental damage, the International Maritime Organization (IMO) decided to phase out single-hull oil tankers such as Sunrise III with an accelerated schedule.

In 2006, Polaris Shipping Co Ltd, Seoul, purchased four single-hulled oil tankers, including Sunrise III, for conversion to very large ore carriers (VLOC) at Cosco (Zhoushan) Shipyard in China.[1][3][4] At the time, this was a typical strategy to increase the lifetime of an otherwise obsolete vessel by another 10 to 14 years and, thanks to the high charter rates of large bulk carriers used to transport iron ore to China, the conversion would pay itself back in just one to two years. Typically, the center tanks of the oil tanker would be split into dry cargo holds while the side tanks would be used for ballast or remain empty. Holes cut on the main deck for cargo hatches and coamings would require additional structural strengthening to retain sufficient longitudinal strength after conversion. A tank top strengthened for high loading rate and grab unloading would be fitted above the bottom frames and girders.[5] The vessel returned to service in 2008 as Stellar Daisy.[4]

Loss

On the 31st of March, 2017, while she was carrying sinter fines (iron ore) across the South Atlantic Ocean from the Vale Ilha Guaiba terminal (23°00′50″S 44°02′02″W / 23.014°S 44.034°W / -23.014; -44.034 (Ilha Guaíba Terminal)), near Rio de Janeiro, Brazil,[6][7] to China, a loud bang was heard and the ship suddenly began listing.[8] An officer radioed that the ship was taking on water and listing heavily.[9] Very soon the ship sank.[8] Radio contact with the ship, last reported to be 1,300 nautical miles (2,500 km) from shore, was lost.[9][10][11][12]

Search

Two Filipino crew members were rescued from a liferaft on April 1 by the cargo ship Elpida. The crew members reported that they had seen their ship sink. The other 22 crew members, 14 Filipinos and 8 South Koreans, remain missing.[13][14]

A search for survivors and wreckage was made by Uruguayan, Argentine and Brazilian ships, supported by Brazilian and US aircraft, in a search area of 70 by 100 nautical miles (130 by 190 km; 80 by 120 mi), 2,000 nautical miles (3,700 km) off the coast of Uruguay. On April 21, the Uruguayan Navy ship General Artigas (es) returned to port after a 17-day search during which floating debris from the wreckage was found. The search continued with six merchant ships.[13][14]

Possible causes

While the shipping journal Lloyd's List reported that cargo liquefaction caused by excessive moisture in the iron ore cargo could be a possible cause of the loss,[3] another shipping journal ShipInsight argued that while a number of vessels have been lost for this reason, any liquefaction should not have been calamitous for Stellar Daisy because, being a converted oil tanker, her cargo holds were originally the centre tanks designed to carry liquid cargo. ShipInsight speculated that the most likely loss for the vessel was linked to her conversion from a tanker to an ore carrier.[4][15]

In February 2017, China Port State Control (PSC) authorities identified six deficiencies, two of which were related to watertight and weathertight doors, during an inspection in Tianjin, China.[1]

Aftermath

Following the sinking of Stellar Daisy, the International Association of Dry Cargo Shipowners (INTERCARGO) has called for an investigation of the causes leading to the casualty.[16] The safety of ore carriers converted from oil tankers in the 2000s has also been questioned. More than half of the bulk carriers in Polaris Shipping's fleet are such conversions.[17]

Only a few days after the loss of Stellar Daisy, another VLOC owned by Polaris Shipping reported structural damage in one of its ballast tanks below waterline, resulting in a small leak. The 280,000-ton vessel, Stellar Unicorn, was built in 1993 as a single-hull oil tanker and converted to an ore carrier in China in 2008. Like Stellar Daisy, she was fully laden with Brazilian iron ore bound for China when the hull damage was discovered off South Africa.[18][19] Stellar Unicorn was also found to have structural and water/weathertight deficiencies in a Port State Control inspection in Qingdao, China, in July 2016 but these were cleared in a follow-up inspection.[15] In June 2017, Stellar Unicorn was sent to cold lay-up together with a number of other Polaris VLOCs[20] and finally sold for scrap in September 2017.[21]

On April 13, a Polaris-owned converted VLOC that was leading the search for the missing Stellar Daisy crew members, Stellar Cosmo, was reportedly forced to head to Cape Town for repairs due to structural damage.[22] However, this claim has been refuted by Polaris Shipping which stated that the vessel headed to Singapore for bunkering before continuing to China.[23] Stellar Cosmo was sold for scrap in September 2017.[24]

In May 2017, two cracks appeared on the main deck of Stellar Queen, another converted VLOC owned by Polaris Shipping, during a ballast water exchange operation while the vessel was underway from China to Brazil with empty holds. Published photographs showed sea water pouring from the ballast water tanks through cracks of about 1.5 metres (5 ft) and 2.5 metres (8 ft) in length.[25]

General characteristics

Stellar Daisy was a single-deck capesize very large ore carrier (VLOC) with an overall length of 321.95 metres (1,056 ft 3 in) and a beam of 58 metres (190 ft 3 in). Fully laden, the vessel drew 20.326 metres (66 ft 8 in) of water and had a deadweight tonnage of 266,141 tons. Her ten cargo holds had a combined bale capacity of 141,332 cubic metres (4,991,100 cu ft). The gross tonnage of the vessel was 148,431 and net tonnage 44,530.[2] On her last voyage, she had a crew of 24.

Like most bulk carriers, Stellar Daisy was propelled by a single low-speed diesel engine driving a large fixed pitch propeller. Her 9-cylinder main engine had an output of 21,982 kW (29,478 hp) at 76 rpm. This gave the vessel a service speed of 15.5 knots (28.7 km/h; 17.8 mph).[2]

References

  1. ^ a b c d "Stellar Daisy (9038725)". Equasis. French Ministry for Transport. Retrieved April 2, 2017. 
  2. ^ a b c d Stellar Daisy. Korean Register of Shipping. Retrieved April 2, 2017.
  3. ^ a b Stellar Daisy: What went wrong?. Lloyd's List, April 5, 2017. Retrieved April 5, 2017.
  4. ^ a b c Did conversion contribute to loss of Stellar Daisy? ShipInsight, April 3, 2017. Retrieved April 4, 2017.
  5. ^ VLCC to VLOC Conversions. Steamship Mutual, January 2008. Retrieved April 5, 2017.
  6. ^ "South Korean cargo ship with 24 people on board disappears in the South Atlantic". Daily Mail. London. April 3, 2017. Retrieved April 3, 2017. 
  7. ^ "Ports and Terminals". Vale. Retrieved May 3, 2017. 
  8. ^ a b Joshua Howgego (Jan 27, 2018). "Peril on the sea: Why are so many megaships sinking?". New Scientist. 
  9. ^ a b "South Korea cargo ship Stellar Daisy missing in South Atlantic". Reuters. April 2, 2017. Retrieved April 2, 2017 – via Daily Telegraph. 
  10. ^ "S Korean cargo ship Stellar Daisy vanishes in South Atlantic". BBC News. April 2, 2017. Retrieved April 2, 2017. 
  11. ^ "Ore carrier Stellar Daisy missing in South Atlantic". Maritime Herald. April 1, 2017. Retrieved April 2, 2017. 
  12. ^ Tong-Hyung, Kim (April 1, 2017). "Ship carrying 16 Filipinos, 8 S.Koreans missing near Uruguay". Associated Press. Retrieved April 2, 2017 – via Las Vegas Sun. 
  13. ^ a b "ROU 04 General Artigas regresó a Uruguay sin haber encontrado sobrevivientes del "Stellar Daisy"" [ROU 04 General Artigas returned to Uruguay without having found survivors of the "Stellar Daisy"]. Montevideo Portal (in Spanish). EFE. April 21, 2017. Retrieved May 3, 2017. 
  14. ^ a b Trezzi, Humburto (April 24, 2017). "Marinha uruguaia encerra buscas e navio que naufragou com carga da Vale segue desaparecido" [Uruguayan navy closes searches, and ship wrecked with Vale cargo still missing]. Diário Catarinense (in Portuguese). Florianópolis, Brazil. Retrieved May 3, 2017. 
  15. ^ a b "Calls grow for Stellar Daisy investigation". ShipInsight. April 7, 2017. Retrieved April 8, 2017. 
  16. ^ Intercargo calls for Stellar Daisy probe. Lloyd's List, April 6, 2017. Retrieved April 8, 2017.
  17. ^ Attention turns to Polaris's 19 converted bulkers. Splash 24/7, April 7, 2017. Retrieved April 8, 2017.
  18. ^ Leaking Polaris VLOC held off South Africa. Lloyd's List, April 7, 2017. Retrieved April 8, 2017.
  19. ^ Polaris suffers another VLOC mishap. Splash 24/7, April 6, 2017. Retrieved April 8, 2017.
  20. ^ Polaris sends elderly VLOCs into cold layup. Splash 24/7, June 21, 2017. Retrieved July 15, 2017.
  21. ^ Scrap prices up in Bangladesh as hungry yards seek tonnage. TradeWinds, September 27, 2017. Retrieved October 11, 2017.
  22. ^ Another defect found on a Polaris VLOC. Splash 24/7, April 13, 2017. Retrieved April 13, 2017.
  23. ^ Stellar Cosmo not undergoing repairs, says Polaris Shipping. IHS Fairplay, April 17, 2017. Retrieved May 9, 2017.
  24. ^ Polaris sends VLOC for demolition. TradeWinds, September 15, 2017. Retrieved October 11, 2017.
  25. ^ VLOC STELLAR QUEEN with two cracks on upper deck awaiting her fate. FleetMon, May 7, 2017. Retrieved May 9, 2017.
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