INS Satpura Arrives in Singapore for 32nd SIMBEX, Strengthening Naval Ties
The exercise stands as a pillar of the enduring partnership between the Indian Navy and the Republic of Singapore Navy (RSN) and is emblematic of a shared commitment to security and stability in the Indo-Pacific.
- Country:
- India
In a robust demonstration of maritime cooperation and strategic alignment, the Indian Naval Ship (INS) Satpura has reached Singapore to take part in the 32nd edition of the Singapore-India Maritime Bilateral Exercise (SIMBEX-25). The exercise stands as a pillar of the enduring partnership between the Indian Navy and the Republic of Singapore Navy (RSN) and is emblematic of a shared commitment to security and stability in the Indo-Pacific.
Deepening a Three-Decade-Old Naval Bond
First initiated in 1994, SIMBEX has grown in scope, scale, and complexity over the past three decades. From its inception as an anti-submarine warfare exercise, the bilateral drill has evolved into a comprehensive maritime engagement encompassing air, surface, and sub-surface operations. The continued annual conduct of SIMBEX underscores the strategic convergence between India and Singapore and the emphasis both nations place on a rules-based maritime order.
INS Satpura’s participation in SIMBEX-25 builds on a history of strong professional synergy between the two navies. A front-line Shivalik-class stealth multi-role frigate, INS Satpura is equipped with state-of-the-art weapons and sensors and is designed to operate across the full spectrum of maritime conflict.
Harbour Phase: Building Professional Synergy
SIMBEX-25 commenced with the Harbour Phase at Changi Naval Base, which features a series of onshore engagements aimed at enhancing mutual understanding and operational readiness. Highlights of this phase include:
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Subject Matter Expert Exchanges (SMEEs)
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Professional discussions on tactical doctrine alignment
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Operational planning conferences
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Cross-ship visits and deck familiarisation onboard RSN ships — RSN Vigilant and RSN Supreme
These interactions not only facilitate the exchange of best practices but also foster an environment of shared learning and interoperability. The activities contribute to aligning strategic perspectives and strengthening trust among naval personnel from both nations.
Formal Opening and Strategic Dialogue
Day 2 of the exercise features the formal Opening Ceremony, followed by a Pre-Sail Conference. These events provide an opportunity for senior naval leadership and mission planners to engage in detailed discussions ahead of the crucial Sea Phase, establishing protocols and synchronizing operational expectations.
The Indian and Singaporean navies reaffirm their shared dedication to maritime domain awareness, operational collaboration, and maintaining a free and open Indo-Pacific. The pre-sail briefing further cements the strategic dialogue that SIMBEX nurtures annually.
Sea Phase: Complex Naval Warfare and Tactical Exercises
The Sea Phase is the operational heart of SIMBEX-25 and includes a broad spectrum of high-intensity exercises such as:
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Air Defence Drills: Simulated threats and coordinated countermeasures involving ship-borne and airborne systems
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Cross-Deck Helicopter Operations: Enhancing interoperability and tactical flexibility through coordinated air operations
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Precision Targeting: Joint targeting drills using surface and aerial platforms to simulate combat scenarios
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Complex Maneuvering Drills: High-speed coordinated ship movements to improve fleet cohesion
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Visit, Board, Search, and Seizure (VBSS) Operations: Maritime interdiction exercises essential for anti-piracy and counter-smuggling operations
These exercises not only validate advanced naval tactics and interoperability but also reinforce each navy’s readiness to respond to evolving maritime threats and humanitarian scenarios.
Strategic Context: Act East and MAHASAGAR
SIMBEX-25 aligns seamlessly with India’s Act East Policy and the strategic vision of MAHASAGAR (Maritime Awareness and Secure And Growth for All in the Region). These frameworks underscore India’s focus on fostering regional maritime partnerships, ensuring peace, stability, and collaborative growth in the Indo-Pacific.
Singapore, a central maritime hub in Southeast Asia, is a key partner in this vision. The continued success of SIMBEX reflects the growing depth of defense and strategic ties between the two nations, transcending naval diplomacy to embody a broader strategic convergence.
Charting the Course for Regional Maritime Security
As SIMBEX-25 unfolds, it not only strengthens the technical capabilities and tactical coordination between the Indian Navy and the Republic of Singapore Navy, but also serves as a symbol of mutual respect, operational excellence, and regional solidarity. The presence of INS Satpura and RSN’s frontline warships in the joint exercise reiterates the shared resolve to uphold freedom of navigation, maritime stability, and international maritime law.
With shared values and strategic alignment at its core, SIMBEX continues to set benchmarks in bilateral naval cooperation, charting a confident course toward a safer, more interconnected Indo-Pacific maritime landscape.

