Diamond Princess (ship)

Princess Cruises Grand-class cruise ship Sapphire Princess

Diamond Princess (ship, 2004) - cropped.jpg
Diamond Princess anchored in Toba in December 2019
[1]United Kingdom
Name: Diamond Princess
Owner: Carnival Corporation & plc
Operator: Princess Cruises
Port of registry:
Builder: Mitsubishi Heavy Industries
Cost: US$500 million
Yard number: 2181
Laid down: 2 March 2002
Launched: 12 April 2003
Christened: 2004
Completed: 26 February 2004
Maiden voyage: 2004
In service: March 2004
Status: Quarantined in Tokyo Bay off Yokohama[2]
Notes: [1]
General characteristics
Class and type: Gem-class cruise ship
Tonnage: 115,875 GT
Length: 290.2 m (952 ft 1 in)
Beam: 37.49 m (123 ft 0 in)
Height: 62.48 m (205 ft 0 in)
Draught: 8.53 m (28 ft 0 in)
Decks: 13
Installed power: Wärtsilä 46 series common rail engines
Propulsion: Twin propellers
Speed: 22 knots (41 km/h; 25 mph)
Capacity: 2,670 passengers
Crew: 1,100 crew
Notes: [1]

Diamond Princess is a British-registered cruise ship owned and operated by Princess Cruises. She began operation in March 2004 and primarily cruises in Asia during the northern hemisphere summer and Australia during the southern hemisphere summer. She is a subclassed Grand-class ship, which is also known as a Gem-class ship. Diamond Princess and her sister ship, Sapphire Princess, are the widest subclass of Grand-class ships, as they have a 37.5-metre (123 ft 0 in) beam, while all other Grand-class ships have a beam of 36 metres (118 ft 1 in). Diamond Princess and Sapphire Princess were both built in Nagasaki, Japan, by Mitsubishi Industries.

There have been two notable outbreaks of infectious disease on the ship – an outbreak of gastroenteritis caused by norovirus in 2016 and an outbreak of COVID-19 caused by SARS-CoV-2 in 2020. In the latter incident, the ship was quarantined for nearly a month with her passengers on board, and her passengers and crew were subject to further quarantine after disembarking. At least 712 out of the 3,711 passengers and crew were infected,[3] and fourteen have died.[4]

Design and description

Diamond Princess at Yokohama in 2014 June.

The diesel-electric plant of Diamond Princess has four diesel generators and a gas turbine generator. The diesel generators are Wärtsilä 46 series common rail engines, two straight 9-cylinder configuration (9L46), and two straight 8-cylinder configuration (8L46). The 8- and 9-cylinder engines can produce approximately 8,500 kW (11,400 hp) and 9,500 kW (12,700 hp), respectively. These engines are fueled with heavy fuel oil (HFO or bunker c) and marine gas oil (MGO) depending on the local regulations regarding emissions, as MGO produces much lower emissions, but is much more expensive.[citation needed]

The gas turbine generator is a General Electric LM2500, producing a peak of 25,000 kW (34,000 hp) fueled by MGO. This generator is much more expensive to run than the diesel generators, and is used mostly in areas, such as Alaska, where the emissions regulations are strict. It is also used when high speed is required to make it to a port in a shorter time period.[citation needed]

There are two propulsion electric motors, driving fixed-pitch propellers and six thrusters used during maneuvering – three at the bow and three at the stern. The propulsion electric motors (PEMs), are conventional synchronous motors made by Alstom Motors. The two motors are each rated to 20 MW and have a maximum speed of 154 rpm. (Rated speed of 0-145 rpm.)[citation needed]

In June 2017 Diamond Princess was retrofitted with a hull air lubrication system to reduce fuel consumption and related CO2 emissions.[5]

Construction and career

The ship was originally intended to be christened Sapphire Princess. However, construction of another ship – the one intended to be Diamond Princess (currently sailing as Sapphire Princess) – was delayed when fire swept through her decks during construction. Because completion of the damaged ship would be delayed for some time, her sister ship, which was also under construction, was renamed Diamond Princess. The name swap helped keep the delivery of Diamond Princess on time.[6]

She was the first Princess Cruises ship to be built in a Japanese shipyard, and the first to forego the controversial "wing" or "shopping cart handle" structure overhanging the stern, which houses the Skywalkers Nightclub on Caribbean Princess, Golden Princess and Star Princess, and which was originally also a feature of Grand Princess prior to her 2011 refit.[citation needed]

Prior to 2014, Diamond Princess alternated sailing north and southbound voyages of the glacier cruises during the northern summer months and in the southern summer, she sailed from Australia and New Zealand. Starting in 2014, she undertook cruises from Yokohama for Tokyo or Kobe in the northern summer season.[7]

For the 2016–17 season, she sailed round-trip cruises in the northern winter months from Singapore.[8] Kota Kinabalu was added as part of her destination along with Vietnamese port of Nha Trang in December 2016.[9] She resumed voyaging from Sydney for the 2017–18 season.[10]

After the 2018 Australia and New Zealand cruises, Diamond Princess was re-positioned into South-East Asia for most of 2018, varying between Japan, South Korea, Singapore, Vietnam, Taiwan and Malaysia.[11] She is projected to remain in South-East Asia to early 2021.[12] She is then projected go to South America and Antarctica in Fall 2021-Spring 2022. [13]

2016 gastroenteritis cases

In February 2016, Diamond Princess experienced a gastroenteritis outbreak, caused by norovirus sickening 158 passengers and crew on board, as confirmed after arrival in Sydney by NSW Health.[14]

Coronavirus disease 2019

On 20 January 2020, an 80-year-old passenger from Hong Kong embarked in Yokohama, sailed one segment of the itinerary, and disembarked in Hong Kong on 25 January. He visited a local Hong Kong hospital, six days after leaving the ship, where he later tested positive for COVID-19 on 1 February.[15] On its next voyage, 4 February, the ship was in Japanese waters when 10 passengers were diagnosed with COVID-19 during the early stages of the COVID-19 pandemic.[16]

The ship was quarantined on 4 February[15] in the Port of Yokohama in Japan.[17] The infected included at least 138 from India (including 132 crew and 6 passengers), 35 Filipinos, 32 Canadians, 24 Australians, 13 Americans, 4 Indonesians, 4 Malaysians,[18] and 2 Britons.[19][20][21] Home countries arranged to evacuate their citizens and quarantine them further in their own countries. As of 1 March, all on board including the crew and the captain had disembarked.[22]

As of 16 March, at least 712 out of the 3,711 passengers and crew had tested positive for the virus.[23][24] As of 14 April, fourteen of those who were on board have died from the disease.[25][26][27][28][29][30][31][32][33] On 30 March, the ship was cleared to sail again after the ship was cleaned and disinfected.[34][32][33]

On 16 May, Diamond Princess departed from the Port of Yokohama. The ship is said to be going to Malaysia.[35]


  1. ^ a b c "Advanced Masterdata for the Vessel Diamond Princess". VesselTracker. 2012. Retrieved 24 April 2012.
  2. ^ Peel, Charlie; Snowden, Angelica (6 February 2020). "Coronavirus: Cases double on Diamond Princess overnight, still in lockdown". The Australian. Retrieved 6 February 2020.
  3. ^ Feuer, William (28 March 2020). "CDC says coronavirus RNA found in Princess Cruise ship cabins up to 17 days after passengers left". CNBC. Retrieved 19 April 2020.
  4. ^ Ministry of Health, Labour, and Welfare (14 April 2020). "横浜港で検疫を行ったクルーズ船に関連した患者の死亡について (About death of patient associated with cruise ship quarantined in Yokohama Port)" (in Japanese).CS1 maint: multiple names: authors list (link)
  5. ^ "Air lubrication system". Seatrade-cruise. 14 August 2018. Retrieved 17 December 2018.
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  8. ^ "Princess Cruises Debuts 2016–2017 Exotics Sailings". Princess Cruises. Retrieved 15 July 2015.
  9. ^ Elliott, Mark (2 December 2016). "Princess Cruises adds Kota Kinabalu to Asian season". Travel Asia Daily. Archived from the original on 26 February 2018. Retrieved 3 December 2016.
  10. ^ "Emerald Princess cruise ship to debut in Sydney: Another cruise giant to call Australia home". Traveller. 7 January 2015. Retrieved 15 July 2015.
  11. ^ "Cruise Search Results:Princess Cruises". www.princess.com. Retrieved 15 September 2018.
  12. ^ "Diamond Princess Cruises". www.seascanner.com. Retrieved 14 May 2019.
  13. ^ Morgan Hines (18 August 2020). "Diamond Princess cruise ship, which had early COVID-19 outbreak, will sail in South America, Antarctica in 2021, 2022". usatoday.com. USA Today. Retrieved 15 September 2020.
  14. ^ Brown, Michelle (4 February 2016). "Cruise ship hit by norovirus gastroenteritis docks in Sydney". ABC News. Australian Broadcasting Corporation (ABC). Retrieved 7 February 2016.
  15. ^ a b "Updates on Diamond Princess". Princess. Archived from the original on 2 March 2020. Entries from 1 to 27 February 2020
  16. ^ Peel, Charlie; Snowden, Angelica (6 February 2020). "Coronavirus: Cases double on Diamond Princess overnight, still in lockdown". The Australian. Retrieved 6 February 2020.
  17. ^ Thompson, Julia; Yasharoff, Hannah. "Coronavirus cases on Diamond Princess soar past 500, site of most infections outside China". USA Today. Retrieved 18 February 2020.
  18. ^ Perimbanayagam, Kalbana (18 February 2020). "Dr Dzulkefly: Only four Malaysians on board Diamond Princess". New Straits Times. Archived from the original on 28 February 2020. Retrieved 28 February 2020.
  19. ^ "Number of Canadians on Diamond Princess testing positive for COVID-19 virus rises to 32". The Star. 17 February 2020. Retrieved 18 February 2020.
  20. ^ Bangkok, Justin McCurry Rebecca Ratcliffe in (18 February 2020). "British couple on Diamond Princess question positive coronavirus test". The Guardian. ISSN 0261-3077. Retrieved 18 February 2020.
  21. ^ Allman, Daniel; Silverman, Hollie; Toropin, Konstantin. "13 Americans moved to Omaha facility from evacuation flights, US officials say". CNN. Retrieved 18 February 2020.
  22. ^ "All crew members have left virus-hit ship in Japan: Minister". News24. Agence France-Presse. 1 March 2020. Retrieved 4 March 2020.
  23. ^ "新型コロナウイルス感染症の現在の状況と厚生労働省の対応について(令和2年3月17日版)". Ministry of Health, Labour and Welfare (in Japanese). Retrieved 17 March 2020.
  24. ^ "クルーズ船感染者数696人に訂正 厚労省". Sankei Digital, Inc. (in Japanese). 5 March 2020.
  25. ^ "クルーズ船の香港の男性が死亡 乗船者で7人目:朝日新聞デジタル". The Asahi Shimbun (in Japanese). Retrieved 7 March 2020.
  26. ^ "Diamond Princess passenger dies, bringing ship's death toll to seven: NHK". Reuters. 7 March 2020. Retrieved 7 March 2020.
  27. ^ "新型コロナウイルス感染症について". Ministry of Health, Labour and Welfare (in Japanese). Retrieved 19 March 2020.
  28. ^ "Fatality rates for covid-19 could vary enormously". The Economist. 12 March 2020. Retrieved 19 March 2020.
  29. ^ "Coronavirus Update Live". Worldometer. Retrieved 24 March 2020.
  30. ^ https://www.mhlw.go.jp/stf/newpage_10393.html
  31. ^ https://www.mhlw.go.jp/stf/newpage_10599.html
  32. ^ a b https://www.mhlw.go.jp/stf/newpage_10802.html
  33. ^ a b https://www.mhlw.go.jp/stf/newpage_10870.html
  34. ^ Clarke, Patrick (1 April 2020). "Diamond Princess Cleared to Sail Following Thorough Cleaning". travelpulse.com. Retrieved 2 April 2020.
  35. ^ "「ダイヤモンド・プリンセス」が横浜港を出港 マレーシアへ". NHK. 16 May 2020. Archived from the original on 16 May 2020. Retrieved 16 May 2020.