Hi everybody..
long time no see. Happy Easter before. :)
Now, i'm study in Hasanuddin University. I take Naval Engginering Department , so perhaps i will much talking about Ship's design..
for the first post in this year i will talking about aircraft carrier of India. It's call Ins Vikrant.
In 1989 a plan was announced to build two new aircraft carriers, with the first vessel to replace the Vikrant, which was set to decommission in early 1997. A contract for a design study then was signed in 1989 with DCN (Direction des Constructions Navales) International (currently known as DCNS) of France for a vessel of about 25,000 tons and with a speed of 30 knots. Construction was to start at the Cochin Shipyard (CSL) in 1993 after the Indian Naval Design Organisation had translated this design study into a production model. However, in 1991, the Committee on Defence Expenditure informed the Indian Navy to abandon plans for large aircraft carriers and shift the design effort to the Italian Garibaldi Class due to budgetary constraints. In September 1993, then-incumbent Chief of Naval Staff - Admiral L. Ramdas - restated the commitment to have a large aircraft carrier ready for trials by 2000, yet no firm decision had been made to provide funds or begin construction. By January 1997, the Vikrant was decommissioned and the Navy was left with it's only aircraft carrier - INS Viraat. Proposals for a 17,000-ton Air Defence Ship (ADS) were made, but still no firm decision had been taken to provide funds or begin construction. In a landmark decision, the government finally sanctioned construction of a 32,000-ton vessel on 14 June 1999 with the Navy receiving a formal letter of intent from the Cabinet Committee on Security. The decision came seven years after the designs were originally conceived.
The then-incumbent Chief of Naval Staff - Admiral Sushil Kumar - stated the vessel will be built at an estimated cost of Rs.20 billion at CSL. Another Rs.50 million will be spent on expanding CSL's shipyards warehousing space, extending its marshalling yard and acquiring new equipment as the vessel is the largest and broadest ship ever to built in India. In 2001, CSL released an image illustrating the 32,000-ton STOBAR (Short Take-Off But Arrested Recovery) design with a pronounced ski jump. The design of the 'island' (superstructure) and sensor suite was considerably different from the model displayed at Def Expo 1999. In February 2002, then-incumbent Chief of Naval Staff - Admiral Madhvendra Singh - stated that the commissioning of the ADS will take 8 to 10 years since CSL had not yet been modernized. On 20 March 2002, then-incumbent Defence Minister George Fernandes stated that the Navy had reassessed their requirement and proposed building a larger vessel displacing 37,500 tons, measuring 252 meters by 58 meters and with a top speed of 28 knots. In August 2006, then-incumbent Chief of Naval Staff - Admiral Arun Prakash - stated that the designation for the vessel has been changed from Air Defence Ship (ADS) to Indigenous Aircraft Carrier (IAC). He also stated that delivery to the Indian Navy will be within 7 to 8 years and that would suggest a commissioning date of 2014.
Jane's Defence Weekly (JDW) reported in late 2006, that construction of the vessel is expected to begin soon at CSL using the modular method of building compartment blocks. The JDW article quoted Rear Admiral Mohinder Kumar Badhwar, the Director General Naval Design who oversees the carrier building program, stating "After building some 120 of 800 blocks using the integrated hull outfit and painting (IHOP) approach, we will lay the carrier's keel in 2007. It will be launched by October 2010." Rear Admiral Badhwar also said that the vessel's commissioning has been delayed by around two years - to 2014 - due to steel acquisition problems. The difficulty in the acquisition of steel was resolved with the import of approximately 1000 tonnes of steel "bulb-bars" from Russia, which is essential to begin the vessel's construction, after the Steel Authority of India Limited (SAIL) was unable to supply them. Naval officials stated that the cutting of steel for the vessel commenced in April 2005, but the project was subsequently delayed due to the lack of bulb bars. However, the officials were confident that SAIL and three other steel mills (two private and one public sector) who are collectively supplying around 20,000 tonnes of steel for the vessel, would be able to provide the additional 4000 tonnes of bulb bars required for the vessel.
Source :
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