(DEFENCE SECURITY ASIA) — Indonesia has demonstrated an increasingly flexible maritime strike capability after the Indonesian Navy’s KRI Sampari (628) fired two Chinese-made C-705 anti-ship cruise missiles against land targets during a massive integrated military exercise in the strategically important Riau Islands.

The 5 August 2026 firing during Latihan Integrasi TNI 2026 at Dabo Singkep represented more than another live-fire certification, because employing an anti-ship missile against terrestrial targets potentially expands how Indonesia can generate precision effects across its dispersed archipelagic battlespace.

KRI Sampari, the lead vessel of Indonesia’s domestically constructed KCR-60M Sampari-class Fast Attack Craft Missile fleet, launched both C-705 missiles after simulated cyber operations neutralised hostile systems, embedding kinetic maritime strike inside a broader multi-domain attack sequence.

Approximately 12,987 Indonesian personnel participated across Army, Navy and Air Force formations, combining combat aircraft, warships, missiles, special operations forces, artillery, cyber units, airborne troops and unmanned systems into an integrated demonstration of increasingly networked Indonesian military power.

The exercise also carried substantial geopolitical significance because the Riau Islands occupy strategically sensitive maritime geography adjoining some of Southeast Asia’s most important sea lanes, making credible distributed strike capabilities increasingly relevant to Indonesia’s wider archipelagic defence posture.

Indonesia’s C-705 firing therefore highlighted an operational concept extending beyond conventional anti-surface warfare, demonstrating how relatively small missile-armed combatants could potentially contribute to coastal strike missions while complicating an adversary’s targeting calculations across geographically fragmented operating areas.

The missile’s approximately 75-kilometre basic range, potentially extending toward roughly 140–170 kilometres depending upon configuration, gives small Indonesian fast attack craft a standoff engagement envelope disproportionate to their approximately 460–500-tonne displacement and compact logistics footprint.

Its 110–130-kilogram semi-armour-piercing high-explosive warhead, high-subsonic flight profile and terminal active-radar guidance were originally optimised for maritime targets, making repeated Indonesian land-target engagements particularly significant from operational integration and mission-planning perspectives.

The August launches followed another successful C-705 land-target firing by KRI Sampari in April 2026, suggesting Indonesia is systematically validating rather than merely experimenting with the missile’s potential secondary strike function through repeated operational training events.

That progression matters because Indonesia operates thousands of islands across an enormous maritime domain, creating strong military incentives for weapons capable of performing multiple missions without requiring separate, expensive and logistically demanding missile inventories for every target category.

Defence Minister Sjafrie Sjamsoeddin, TNI Commander General Agus Subiyanto and senior service leadership observed the exercise, while officials emphasised improving readiness, equipment, personnel and ammunition support alongside stronger integration between Indonesia’s traditionally distinct military service capabilities.

Taken together, the C-705 firing, indigenous kamikaze unmanned surface vessel debut, loitering munitions, cyber operations and conventional joint fires portrayed an Indonesian force posture increasingly centred on distributed lethality, domestic industrial capacity and multi-domain deterrence across the Indo-Pacific.

C-705 Land Strike Expands KRI Sampari’s Tactical Utility

KRI Sampari is approximately 60 metres long and carries up to four C-705 missiles, allowing the domestically built fast attack craft to generate meaningful standoff firepower while retaining the speed, mobility and smaller support footprint required for archipelagic operations.

The C-705 was developed by China Aerospace Science and Industry Corporation as an evolution of the shorter-ranged C-704, using turbojet propulsion and solid-rocket boosting to extend engagement range while remaining sufficiently compact for comparatively small surface combatants.

With launch mass estimated around 320–360 kilograms and diameter near 28 centimetres, the missile packages substantial anti-surface lethality into a relatively compact weapon, enabling fast attack craft to distribute missile capacity across numerous operating locations rather than concentrating firepower exclusively aboard major warships.

Its high-subsonic speed of approximately Mach 0.8 and sea-skimming trajectory, reportedly descending toward roughly five to seven metres during terminal flight, are intended to compress defending warships’ detection, classification and interception timelines during maritime engagements.

Mid-course inertial navigation supported by satellite positioning can be paired with active-radar terminal guidance, while modular seeker alternatives associated with the missile family potentially provide additional targeting flexibility against different operational environments and electronic countermeasure conditions.

However, successful engagement of fixed land targets does not automatically establish the C-705 as equivalent to a purpose-built modern land-attack cruise missile, particularly against mobile, hardened or electronically contested targets requiring sophisticated navigation, discrimination and terminal targeting.

The strategically important development is therefore mission expansion rather than technological transformation, because Indonesia is demonstrating that existing anti-ship inventories may generate additional strike options through modified mission planning, fire-control procedures and target-coordinate management.

For Indonesian commanders, such flexibility could increase available firing solutions during coastal defence operations, particularly where small missile craft exploit islands, littoral clutter and dispersed naval facilities to complicate hostile intelligence, surveillance, reconnaissance and targeting cycles.

Distributed KCR-60M operations could consequently force an adversary to monitor numerous potential missile-launch positions across Indonesia’s maritime geography, raising surveillance requirements and potentially increasing the resources necessary to suppress relatively inexpensive fast attack craft.

The August firing therefore reinforces a broader principle of distributed maritime operations: survivability can derive not only from platform protection but also from mobility, geographic dispersion, concealment and an opponent’s inability to efficiently locate every potential missile shooter.

From 2016 Failure to Repeated 2026 Live-Fire Success

Indonesia’s C-705 experience nevertheless carries an important history of integration difficulties, particularly after two missiles launched during the September 2016 Armada Jaya exercise experienced serious problems during a demonstration witnessed by then-President Joko Widodo.

One missile reportedly launched several minutes late and missed its intended target, while another malfunctioned during flight, generating political criticism and undermining confidence in procurement and proposed technology-transfer arrangements surrounding the Chinese-origin weapon.

Those failures demonstrated that missile capability depends upon substantially more than advertised range or warhead specifications, because combat effectiveness ultimately requires reliable launch systems, fire-control integration, trained crews, maintenance infrastructure, ammunition management and repeatable operational procedures.

Indonesia nevertheless retained the C-705, and subsequent successful exercises—including a 2021 engagement against a maritime target and two separate land-target events during 2026—indicate that operational confidence has improved through continued integration, maintenance and crew training.

The April 2026 firing against Pulau Gundul was particularly consequential because KRI Sampari employed the C-705 against a terrestrial objective, establishing a precedent subsequently reinforced by the two-missile Dabo Singkep engagement four months later.

Repeated demonstrations matter more than isolated tests because military credibility depends upon reproducibility, especially for complex missile systems whose operational availability can be constrained by seeker reliability, propulsion condition, software integration, storage standards and crew proficiency.

Nevertheless, publicly reported exercise success cannot establish wartime effectiveness against defended targets, and uncertainty remains regarding performance under electronic warfare, active interception, deceptive countermeasures, degraded satellite navigation and adversarial intelligence-surveillance-reconnaissance pressure.

Indonesia’s experience consequently illustrates both the opportunities and limitations associated with imported missile technology, particularly when local armed forces must sustain foreign-designed weapons across decades while seeking greater sovereign control over maintenance, integration and defence-industrial expertise.

Earlier ambitions involving licensed production and technology transfer appear to have encountered setbacks after the 2016 failures, highlighting the substantial difference between operating an imported missile and acquiring the industrial knowledge required to manufacture or independently modify one.

The renewed C-705 firing therefore signals restored operational utility rather than proven technological sovereignty, while Indonesia’s parallel investment in indigenous unmanned systems suggests Jakarta is simultaneously pursuing domestic capabilities capable of reducing longer-term dependence on external suppliers.

Multi-Domain Exercise Links Missiles, Cyber, Aircraft and Special Forces

The missile launches formed only one element of a deliberately sequenced joint scenario combining airpower, maritime strike, special operations, cyber effects, unmanned attack systems, artillery and airborne manoeuvre rather than treating individual weapons as isolated demonstrations.

Rafale and F-16 combat aircraft conducted strikes using MK-82 bombs, demonstrating how Indonesia could employ tactical aviation to shape the battlespace before maritime and ground forces exploited disruption created through coordinated fires and manoeuvre.

Kopasgat personnel conducted operations intended to clear or secure approaches for follow-on forces, while Kopaska combat divers simulated underwater infiltration and cable sabotage, reflecting increasing military attention toward critical seabed infrastructure within modern maritime competition.

Cyber units concurrently simulated disruption of hostile electrical systems, after which KRI Sampari launched its C-705 missiles, conceptually connecting non-kinetic network effects with precision kinetic fires to compress an adversary’s ability to recover between successive attack phases.

Naval gunfire from KRI Prabu Siliwangi, KRI Sultan Iskandar Muda and KRI Raden Eddy Martadinata subsequently reinforced the layered fires architecture, while Indonesian Marine Corps multiple-launch rocket systems added land-based firepower to the joint engagement sequence.

Army airborne forces deployed from C-130 Hercules transports, while artillery, tanks, reconnaissance drones, combat unmanned aircraft and air-defence systems expanded the scenario into a broader demonstration of joint-force integration across multiple operational domains.

The exercise’s approximately 12,987 personnel also underline the logistics challenge behind Indonesian multi-domain operations, because ammunition distribution, fuel, communications, maintenance and command infrastructure must remain synchronised across geographically separated formations for integrated combat power to function.

For an archipelagic military, logistics resilience becomes particularly consequential because forces dispersed across islands gain survivability but simultaneously create longer sustainment chains vulnerable to disruption, making distributed operations dependent upon robust maritime and aerial resupply networks.

The exercise therefore tested more than individual weapon proficiency, because sequencing cyber effects, combat aviation, naval missiles, surface gunfire, special operations and ground manoeuvre requires interoperable command structures capable of translating sensor information into coordinated tactical action.

Whether Indonesia can reproduce that integration under wartime communications degradation remains uncertain, but the exercise clearly signals an institutional effort to move toward multi-domain operations where platforms function as components within a wider combat architecture.

Kamikaze USV Signals Indonesia’s Push Toward Distributed Lethality

Among the exercise’s most strategically significant developments was the public operational debut of a PT PAL-built one-way attack unmanned surface vessel launched directly from the well deck of hospital ship KRI dr. Soeharso toward a mock shoreline target.

The demonstration effectively transformed a large support vessel into an unmanned-system mothership, illustrating how existing Indonesian naval platforms could potentially deploy expendable strike craft without requiring purpose-built drone carriers or extensive new basing infrastructure.

The angular low-observable USV incorporates a mast-mounted electro-optical sensor for navigation, target identification and terminal guidance, while its initial targeted performance exceeds 55 knots and envisages approximately 150 kilograms of warhead capacity.

Although the demonstration vehicle reportedly carried no live warhead, the concept creates an asymmetric strike mechanism in which relatively inexpensive unmanned craft could potentially threaten coastal facilities or maritime targets while keeping personnel outside the terminal engagement zone.

PT PAL’s USV reportedly shares command-and-control architecture with its KSOT autonomous submarine programme, potentially enabling common remote-control or portable-console concepts while supporting pre-programmed autonomous routes as Indonesia develops a broader indigenous unmanned maritime ecosystem.

Future artificial-intelligence-based friend-or-foe identification is planned, although autonomous target discrimination introduces substantial technical and operational requirements because reliable classification must function amid clutter, electronic interference, deceptive signatures and rapidly changing littoral environments.

The domestically produced AKM KI-50 kamikaze drone was also employed, adding an aerial loitering-munition layer that complements surface-launched missiles and unmanned boats while broadening the number of directions from which Indonesian forces could generate attack effects.

Combining C-705 missiles with expendable unmanned systems potentially creates a more complicated defensive problem, because sophisticated interceptors could face simultaneous threats possessing different speeds, signatures, trajectories, guidance mechanisms and economic exchange ratios.

For Indonesia, indigenous unmanned weapons also carry industrial significance by potentially reducing dependence upon imported systems while developing domestic expertise in autonomy, sensors, command-and-control integration, propulsion, manufacturing and eventually collaborative unmanned operations.

The exercise consequently positioned domestic unmanned technology alongside imported Chinese missiles and Western-origin combat aircraft, reflecting Indonesia’s diversified procurement architecture while signalling a longer-term ambition to increase sovereign defence-industrial capability within an increasingly contested Indo-Pacific.

Riau Islands Exercise Carries Wider Indo-Pacific Strategic Significance

Dabo Singkep’s location gives the exercise strategic relevance beyond routine training because the Riau Islands sit within an archipelagic environment connected to major maritime approaches linking the Indian Ocean, South China Sea and economically critical Southeast Asian waterways.

Indonesia does not need every fast attack craft to match a major surface combatant individually if distributed missile boats, aircraft, shore forces and unmanned systems can collectively generate overlapping engagement zones across strategically important maritime approaches.

The C-705’s relatively modest range remains considerably below that of newer long-range anti-ship weapons, but geography can partially compensate because mobile launch platforms operating among islands may position themselves closer to likely maritime transit corridors.

This interaction between weapon range and geography makes Indonesia’s force posture distinctive, because archipelagic terrain provides numerous potential operating locations while simultaneously imposing severe command, surveillance, maintenance and logistics requirements on forces seeking to exploit dispersion.

Fast attack craft consequently remain relevant where commanders can protect them through mobility and information advantage, but their survivability would deteriorate rapidly against an adversary possessing persistent satellite surveillance, maritime patrol aircraft, drones and long-range precision weapons.

The exercise’s strategic signalling therefore rests less upon any single C-705 launch than upon Indonesia’s attempt to integrate missiles, fighters, cyber operations, special forces, unmanned systems and ground formations into a geographically distributed national defence architecture.

Sjafrie Sjamsoeddin’s emphasis on improved readiness, personnel, equipment and ammunition support underscores that deterrence ultimately depends upon sustainable force generation, because sophisticated platforms have limited strategic value without sufficient munitions, maintenance capacity and trained personnel.

His advocacy for integrated exercises two or three times annually would, if sustained, increase opportunities to expose interoperability failures and refine command relationships before crisis conditions impose substantially greater operational pressure on Indonesia’s geographically dispersed forces.

Significant uncertainties nevertheless remain, including C-705 inventory depth, wartime resupply capacity, electronic-warfare resilience, target-quality intelligence and the maturity of emerging unmanned systems, preventing exercise demonstrations from being automatically interpreted as fully operational combat capability.

Yet the August 2026 Dabo Singkep exercise demonstrates a clear trajectory: Indonesia is combining distributed missile firepower, domestic unmanned technology and increasingly integrated joint operations to strengthen archipelagic deterrence while adapting its force posture to a rapidly changing Indo-Pacific battlespace.

The article deliberately distinguishes demonstrated capability from inferred wartime potential, especially around C-705 land-attack effectiveness, electronic-warfare resilience, unmanned autonomy and operational readiness, while retaining the high-impact geopolitical framing needed for DSA’s global defence readership.