Defence Current Affairs 17 December 2025

In Current Affairs for 17 December 2025, we will see the latest national and international current affairs news. These important current affairs will be beneficial for your upcoming NDA, CDS, CDS OTA, AFCAT, TA, Agniveer Army, Agniveer Navy, Agniveer Air Force, Women Military Police, INET, MNS, ACC exams, SCO, PCSL, CAPF, and SSB interviews, and direct entries for Army, Navy, and Air Force like SSC Tech, TGC, JAG, NCC, TES, 10+2 Cadet. Download a PDF file about current events at the end of this article. Let us now see the Current Affairs.

Defence Current Affairs 17 December 2025

Commissioning of DSC A20

The Indian Navy strengthened its underwater operational capabilities with the induction of DSC A20, the first vessel in a series of five Diving Support Craft. The commissioning ceremony was held at Naval Base, Kochi on 16 December 2025. These vessels are being constructed indigenously by M/s Titagarh Rail System Limited, Kolkata, highlighting India’s growing self-reliance in naval shipbuilding.
Designed as a catamaran-hull platform with a displacement of around 390 tonnes, DSC A20 is equipped with advanced diving systems. It will be deployed for underwater inspections, repair work, harbour clearance operations and other specialised diving tasks in coastal regions. The vessel’s design benefited from hydrodynamic studies and model testing conducted at the Naval Science and Technological Laboratory (NSTL), Visakhapatnam, ensuring enhanced stability and operational efficiency.

DRDO Selects Bombardier Global-6500 Jets for ISTAR Role

India is set to significantly upgrade its aerial intelligence and surveillance strength through a major ISTAR (Intelligence, Surveillance, Target Acquisition and Reconnaissance) programme. Under a ₹10,000 crore project, three Bombardier Global-6500 ultra-long-range jets will be transformed into airborne command and control platforms.
These aircraft will function as high-altitude operational hubs, capable of tracking adversary movements, identifying threats over vast distances and providing real-time targeting information to combat units. The Global-6500 offers an impressive unrefuelled range of about 6,600 nautical miles (12,200 km) and is powered by Rolls-Royce Pearl 15 engines. In its military configuration, the aircraft will prioritise mission consoles and sensor systems, accommodating around 10–12 operators instead of luxury seating.

India Unveils Indigenous Microprocessor DHRUV64

India achieved a landmark in its semiconductor ecosystem with the launch of DHRUV64, the country’s first 64-bit, dual-core, 1.0 GHz indigenous microprocessor. Developed by C-DAC under the Microprocessor Development Programme (MDP), DHRUV64 represents a fully domestic solution for both civilian and strategic needs.
Microprocessors are essential to modern technology, driving everything from consumer electronics to defence platforms and space systems. With DHRUV64, India moves closer to technological self-sufficiency by reducing dependence on imported chips. The processor also provides a strong platform for startups, academic institutions and industries to develop and scale innovative products using Indian-designed technology.

Astrobase Advances Reusable Rocket Engine Technology

Bengaluru-based start-up Astrobase, founded in 2024 by former ISRO engineers and industry experts, is pushing India into the next generation of space propulsion. The company is developing a methane-fuelled rocket engine based on the full-flow staged combustion (FFSC) cycle, one of the most efficient propulsion methods in the world.
Producing around 800 kN of thrust, the engine is intended to power a reusable medium-lift launch vehicle. Astrobase has also established a 46,000 sq. ft. manufacturing facility and India’s first private high-thrust LOX–LNG engine test centre. With reusability at its core, the project aims to address India’s growing demand for frequent satellite launches and strategic space missions.

Review Questions

1. Where was DSC A20 commissioned into the Indian Navy?
   A. Mumbai
   B. Visakhapatnam
   C. Kochi
   D. Chennai
   ANSWER: C
2. Which company is building the Diving Support Craft (DSC) series for the Indian
   Navy?
   A. Mazagon Dock Shipbuilders
   B. Garden Reach Shipbuilders
   C. Larsen & Toubro
   D. Titagarh Rail System Limited
   ANSWER: D
3. The Bombardier Global-6500 aircraft selected for ISTAR missions are primarily
   meant for which role?
   A. Strategic bombing
   B. Air refuelling
   C. Airborne surveillance and command
   D. Fighter escort
   ANSWER: C
4. DHRUV64 is India’s first indigenous microprocessor with which key feature?
   A. 32-bit single core
   B. 64-bit dual core
   C. Quad-core architecture
   D. AI-only processor
   ANSWER: B
5. Astrobase’s rocket engine uses which propulsion cycle?
   A. Gas generator cycle
   B. Pressure-fed cycle
   C. Staged combustion cycle
   D. Full-flow staged combustion cycle
   ANSWER: D
6. Ex ‘JIMEX’ Conducted b/w India &
   A. Qatar
   B. Oman
   C. Japan
   D. Jamaica
   ANSWER: C
7. Home Port of The INS Satpura Is In Joint Exercises B/w
   A. ENC
   B. WNC
   C. SNC
   D. None
   ANSWER: A
8. INS Satpura Is A
   A. Destroyer
   B. OPV
   C. Submarine
   D. Frigate
   ANSWER: D
9. Cho La Incident Was Done In
   A. 1967
   B. 1988
   C. 1998
   D. 1980
   ANSWER: A
10. VL-SRSAM Is A Quick Reaction Surface-to-air Missile Developed By
    A. NASA
    B. BEL
    C. DRDO
    D. ISRO
    ANSWER: C
11. Wartime Gallantry Award Is/Are
    A. Param Vir Chakra
    B. Maha Vir Chakra
    C. Vir Chakra
    D. All of the above
    ANSWER: D
12. WNC Is In
    A. Mumbai
    B. Kochi
    C. Chennai
    D. Panaji
    ANSWER: A
13. Mitra Shakti Ex Held B/w India &
    A. Sri Lanka
    B. USA
    C. UK
    D. Nepal
    ANSWER: A
14. SLNS Sayurala Is A Ship Of
    A. Oman
    B. Qatar
    C. Sri Lanka
    D. Maldives
    ANSWER: C
15. “The Blue Book: A Writer’s Journal” Book Written By
    A. Amitava Kumar
    B. Vikas Kumar Jha
    C. Usha Uthup
    D. Richa Mishra
    ANSWER: A
16. CONAKRY Is The Capital Of
    A. GUINEA
    B. GUATEMALA
    C. GRENADA
    D. GREECE
    ANSWER: A
17. IRBM Stands For
    A. Intermediate Resource Ballistic Missile
    B. Intermediate Range Ballistic Missile
    C. Intermediate Range of Ballistic Missile
    D. Intermediated Range Ballistic Missile
    ANSWER: B
18. BEL HQ Is In
    A. Bengaluru
    B. Noida
    C. New Delhi
    D. Chennai
    ANSWER: A
19. Major Rank Of Indian Army Is Equivalent To Which Rank Of The Indian Navy?
    A. Captain
    B. Inspector
    C. Lt Commander
    D. Vice-admiral
    ANSWER: C
20. War Cry of ASSAM REGIMENT
    A. Parakramo Vijayate
    B. Rhino Charge
    C. Jai Bajrangbali
    D. Duty, Honour, courage
    ANSWER: B

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