Indonesia submarine KRI Nenggala (402) and KRI Cakra (401) built by Kiel Germany in 1981, or 35 years in service. The question is whether it is still safe submarine with age to operate?
Actually a lot of old submarine continues to operate safely and in fact it also exists in the United States.
Let's see. In the United States, four nuclear attack submarines (SSN) class Los Angeles is scheduled for demolition in 2017 after 36 years in service. Temporarily the life of nuclear ballistic missile submarines (SSBN) Ohio class has been extended to 43 years.
France is also the same. If the program runs according SSN Barracuda class time direncakakan the Rubis-class submarines will be replaced after 34 years of operation.If the SSBN fleet will be replaced on the schedule it will happen around 2035, when the first class Le Triomphant be aged 38 years.
British Navy because budget pressures will prolong the life of their submarine.Currently four Trafalgar class SSN scheduled to be removed from service after 30-32 years of operation to be replaced by Astute class. Vanguard class SSBN life will be approximately 35 years.
The state of the Russian submarine force is a subject that many secrets covered. But jells large number of SSBN and SSN they also had to walk for more than 35 years if the level of force that is to be maintained. At least seven are believed to be operational SSN are older than 25 years, because there are at least four patrol submarines (SSK) Kilo class diesel electric. At least two operational SSBN over 35 years, although they have to be replaced within the next few years.
Ie conventional submarines with diesel electric power is more difficult to assess because of the role and operational conditions vary so widely, while many navy-especially in Western Europe-have been significantly reduced after the end of the Cold War.
Nevertheless, there are still some countries that still operate SSK to 35 years over thirty-five years or more. Turkey has three types of 209 in this age, Ecuador and Peru are two of four. While there are plenty of other submarines over the age of 30 and still running.
By looking at these facts and KRI KRI Nenggala Chakra is practically "normal" if they continue to operate. Only, it takes big money to upgrade the system to remain offset submarine threat level. In addition the program also remains to be run substitute for however both should be replaced immediately.
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