MV Tønsberg explained

MV Tønsberg is a roll-on/roll-off ship owned by Wilh. Wilhelmsen. it is the largest RORO ship in the world.^[1]

Specification

• Dimensions: MV Tønsberg is 265m (869feet) length overall and 32.26m (105.84feet) wide, and has 11m (36feet) draught and 46m (151feet) of air draught. Gross tonnage is 76,500 gt. Capacity is 5% – 7% higher than Mark IV roro ships.
• Decks: Six fixed decks and three hoistable ones (4B, 6 and 8, lifted by electric winches). The main deck can take loads 7.1 m high – more than other vessels – allowing very large loads. The total deck space is 50,335 m² and cargo volume is 138,000 m³. Internal ramps are 8 metres wide; The weather deck (which can be used for outsize or unusual loads, such as wind turbine blades) also has a 4m wide ramp from below, to reduce the need for cranes.^[2]
• Stern ramp: The stern ramp is 12m (39feet) wide and can take loads of 505 tonnes.
• Design: Hull form has been improved, so compared to previous ships it will use 15 – 20% less fuel per unit of cargo.^[3] Stability has been improved, to reduce the need for ballast water. There is a double bottom and Deck 5 is also watertight.
• Propulsion: 7-cylinder MAN B&W engine, which has been derated from 22,890 kW^[4] to 20,100 kW MCR at 108rpm; (although normal output in service is 18,090 kW), driving a 7.3m (24feet) diameter 6-bladed propeller; plus two 2,500 kW Kawasaki thrusters (one each at the bow and the stern). Service speed is 20.25 knots.^[5]

History

MV Tønsberg is the fourth Wilhelmsen ship to carry this name; it's named after the Norwegian coastal town where Wilhelmsen was founded in 1861.^[6] It was built to celebrate the 150th anniversary of Wilh. Wilhelmsen line. It is the first in a series of four "Mark V" ships, built in 2010-2011 by Mitsubishi Heavy Industries shipyard in Nagasaki, in Japan. The second ship of the class, Parsifal, was delivered in September 2011.^[7]

In June 2012, Tønsberg was awarded "Ship of the Year 2011" by the Japan Society of Naval Architects and Ocean Engineers, recognising its efficiency and environmental compatibility.^[8]

External links

• Photos of MV Tønsberg

Notes and References

1. News: Wilhelmsen launches largest ro-ro ship. https://archive.today/20130127230621/http://www.logisticsmanager.com/Articles/Article.aspx?liArticleID=15772. dead. 27 January 2013. 1 July 2012. Logistics Manager.
2. News: Wilh. Wilhelmsen launches next generation ro-ro ship. 1 July 2012. Heavy Lift & project Forwarding International. dead. https://archive.today/20130125072152/http://www.heavyliftpfi.com/content/newsitem.aspx?id=2679. 25 January 2013.
3. Web site: Wilh. Wilhelmsen launches next generation cargo vessel. Wilhelmsen press release. 1 July 2012. dead. https://web.archive.org/web/20120507144411/http://www.wilhelmsen.com/about/press/newsandpress/Pages/WilhWilhelmsenlaunchesnextgenerationcargovessel.aspx. 7 May 2012.
4. Web site: MAN B&W L70ME-C8-TII Project Guide. MAN. 31 July 2012.
5. News: Wilhelmsen new ro-ro is biggest ever. 1 July 2012. The Motorship. 28 May 2011. dead. https://web.archive.org/web/20120702210558/http://www.motorship.com/features101/ships-and-shipyards/wilhelmsen-new-ro-ro-is-biggest-ever. 2 July 2012.
6. News: Utsatt dåp for verdens største RoRo skip. 1 July 2012. skips-revyen. 17 March 2011. dead. https://web.archive.org/web/20120624025310/http://www.skipsrevyen.no/nyheter/135817.html. 24 June 2012.
7. News: Parsifal hits new notes for heavy lift. https://archive.today/20130125015144/http://www.heavyliftpfi.com/content/newsitem.aspx?id=3322. dead. 25 January 2013. 1 July 2012. Heavy Lift & project Forwarding International.
8. Web site: TØNSBERG, MHI's Massive RO/RO Vessel, Awarded "Ship of the Year 2011": High Transport Efficiency and Environmental Compatibility Recognized. Mitsubishi Heavy Industries. 1 July 2012. dead. https://web.archive.org/web/20120617063435/http://www.mhi.co.jp/en/news/story/1206121546.html. 17 June 2012.