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The roots of Indian Navy can be traced back to the 17th-century. Wikimedia Commons

NEW DELHI: India is the seventh-largest country in the world and owns the coastline of 7,516.6 km. Here comes the role of the Indian navy, which is responsible for safeguarding and securing such an enormous coastal area. Navy always holds a very strategic role in a country like India.

Indian navy is a prodigious name in itself and budding force to reckon with. Indian Navy is the naval branch of the armed forces of India and works along with the Indian Air Force and the Indian Army. It is the fifth largest Navy and is considered as one of the strongest navies around the world. The headquarters of Navy is located in New Delhi.


Indian Navy is also known by the name of Bharatiya Nau Sena. The naval persons are no less than the superheroes. Their constant will to serve the nation and sheer dedication are commendable.


The current flag of Indian Navy incorporates St. George’s Cross design, a part of the Union Jack. Wikimedia CommonsThe current flag of Indian Navy incorporates St. George’s Cross design, a part of the Union Jack. Wikimedia Commons

Indian Navy Day is celebrated on 4 December and the motto of the naval force is ‘Sham No Varunaḥ’, which means “may the Lord of the water be auspicious unto us”. The current flag of Indian Navy incorporates St. George’s Cross design, a part of the Union Jack.

The roots of Indian Navy can be traced back to the 17th-century. Initially, British East India Company established the naval fleet in India, under the name of East India Company’s Marine in 1612. Later on, it was renamed as Royal Indian Navy but soon after the independence, Royal Indian Navy became Indian Navy.

Here are 20 interesting facts about our naval superheroes of the seas that defend our coastal areas.

  1. Indian Navy is headed by the Chief of Naval Staff. Other high ranks in Navy include Vice Chief of Naval Staff, Deputy Chief of Naval Staff, Chief of Personnel etc.
  2. India’s first aircraft carrier was INS Vikrant. INS Viraat of the Indian navy is the largest aircraft carrier in India.
  3. Ezhimala Naval Academy in Kerala is the largest naval academy in the whole of Asia.


    MARCOS is the special operation unit of the Indian Navy. Wikimedia Commons

  4. Indian navy holds the distinction of one of the only two naval aerobatic teams in the world. The name of the aerobatic demonstration team is Sagar Pawan which uses 4 HJT-16 Kiran Mk.2 trainer aircrafts. The colour scheme used by the naval aircrafts is dark blue on white. The other aerobatic demonstration team is Blue Angels of the US Navy.
  5. After the terrorist attack of 26/11, Indian Navy came up with patrolling units known as Sagar Prahari Bal (SPB) to keep a check on India’s coastal waters.
  6. The crucial naval bases of Indian Navy are located in Mumbai, Kochi, Visakhapatnam, Goa, Chennai, Pune, Coimbatore, Chilka and Port Blair.
  7. The Navy works under three commands: Western Command in Mumbai, Eastern Command in Vishakhapatnam and Southern Command in Cochin. All these commands are headed by a Flag Officer Commanding-in-Chief.
  8. MARCOS or Marine Commandos are the special operations unit of Indian navy like the Para unit of Army. It is one of the most distinguished and efficient special forces in the world. The force is acknowledged ‘Dadiwala fauj‘ by the various terrorist groups, due to as known by their bearded disguises in civil areas. The dropout rate is about 90 percent, which makes it really difficult to make the cut.


    Ezhimala Naval Academy in Kerala is the largest naval academy in the whole of Asia. Wikimedia Commons

  9. The 1971 Indo-Pakistani war is considered as the largest naval conflicts since the Second World War. During the combat, Navy successfully targeted many enemy ships and destroy the oil tank farms by using anti-ship cruise missiles.
  10. During the Britsh rule in 1946, 20,000 Indian sailors rebelled against the British policies of discrimination and trial of ex-INA soldiers. But unfortunately, the mutiny was suppressed due to inadequate support from the INC and Muslim League.
  11. The naval variant of BrahMos missile is the fastest cruise missile in the world. The missile can zoom at a speed of Mach 2.8 – 3.0. This capability makes India the only country with supersonic cruise missiles in all of their defense forces.
  12. Chhatrapati Shivaji Raje Bhosale is considered as the Father of Indian Navy. Chhatrapati built a strong naval presence across the coast of Konkan and Goa to protect sea trade.
  13. Indian Navy has a dedicated multi-brand communication satellite called GSAT – 7. It was launched by ISRO to help Indian Navy in acquiring the blue water capabilities in a much better way.


    Indian Navy has a dedicated multi-brand communication satellite called GSAT – 7. Wikimedia Commons

  14. The Naval soldiers of the Indian Navy have successfully completed an expedition to the North Pole and the South Pole.
  15. Indian Navy was the first navy in the world to send a submariner to an expedition to Mt. Everest. The expedition was led by Lt. Cdr. M.S. Kohli in 1965.
  16. The first independent operation of the Indian Navy’s was against Portuguese Navy during the liberation of Goa in 1961.
  17. The first Chief of Staff of the Indian Navy was Vice Admiral Ram Dass Katari who assumed the office on April 22, 1958.
  18. Indian Navy played a decisive role in the success of Kargil War. However, this information was kept under wraps for a long time. Personals from the MARCOS unit fought alongside Indian army in the Himalayas under the naval operation, Talwar.
  19. INS Arihant is the first ballistic missile submarine to have been built by a country other than the five permanent members of the UNSC. It is a 6,000-tonne vessel and India’s only nuclear-powered ballistic missile submarine.
  20. All the ships of Indian Navy are prefixed with INS which means Indian Naval Ship or Indian Navy Station.

There are 11 destroyers deployed by the Indian Navy. Wikimedia Commons

Indian Navy keeps itself abreast of any adversity by striking a balance between its warships, aircrafts and patrol vessels. The current operational fleet of the Indian navy consists of 1 aircraft carrier, 11 destroyers, 14 frigates, 24 corvettes and 16 submarines. Aiming high on ‘Make in India’ program, most Navy ships and submarines are now manufactured indigenously.


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Indian astronomers have found an active galaxy in a very bright state with 10 times more X-ray emission than normal

Indian astronomers have found an active galaxy in a very bright state with 10 times more X-ray emission than normal, equivalent to more than 10 trillion of the sun, and located five billion light years away that could help probe how particles behave under intense gravity and acceleration to the speed of light.

It could help study the role of strong gravity and acceleration of matter in the formation, interaction and evolution of galaxies in the early universe.

Every galaxy in the universe is believed to host a supermassive black hole at its centre. In some galaxies, the black hole is actively devouring a large amount of material and shooting a jet of plasma almost at the speed of light towards us. These are called blazars.

OJ 287 belongs to a class of blazars known as BL Lacertae objects which show very rapid and large amplitude flux variations but barely discernible emission line features.

This class of sources emit in the whole electromagnetic spectrum, a rather uncommon phenomenon which requires extreme physical conditions. Hence, a study of such sources tells us about the behaviour of matter in an extreme gravitational field where it is difficult for light to escape from the vicinity of the black hole.

Astronomers at Aryabhatta Research Institute of Observational Sciences, an autonomous institute of the Department of Science and Technology, Government of India, have been monitoring one such black hole system named 'OJ 287' since 2015. This source shows a repeated optical brightness enhancement almost every 12 years.

"The repeated optical enhancement makes OJ 287 very intriguing as this class of sources does not show any repeating features in flux variations. The repeated optical enhancement made the researchers believe that the system hosts a binary black hole," said a release from the Ministry of Science and Technology.

In 2020, the source was very bright at optical and X-ray bands with X-ray flux more than 10 times the normal (non-active phase) flux. This flare was very different as it was not expected in models proposed for this source and thus, indicated a more complex system and physical conditions.

Investigating the extreme brightness shown by OJ 287 at optical and X-ray bands, astronomers led by Pankaj Kushwaha and Alok C. Gupta reported the source in a completely new spectral state.

The team argued that this change of state holds clues to the researcher's quest to understand how matter behaves in very strong gravity and how it accelerates the particle to almost the speed of light -- a feat that is out of the scope of even the most advanced CERN accelerator.

The research published in 'The Astrophysical Journal' tracked the details of changes in optical to the X-ray emission spectrum of the source with time from 2017 to 2020 -- after the second brightest X-ray flare of the source. It revealed how the source gradually started to change its spectral behaviour from mid-2018 to the new spectral state in 2020.

The study included data recorded by the ground-based facility operated by Physical Research Laboratory, Ahmedabad, operated Mount Abu observing facility in near infra-red bands and the space-based NASA's satellites -- the Niels Gherel Swift satellite at optical, UV and X-rays with gamma ray data from the Fermi satellite, the release added. (IANS/JB)

Keywords: Science, NASA, Satellites, Black Hole, Gravity, India


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