Interactive Defence and Attack System for Submarines — a unique submarine-launched guided missile designed to engage airborne threats (helicopters, maritime patrol aircraft, UAVs) and surface targets (small combatants, fast attack craft) from periscope depth. Based on the IRIS-T short-range air-to-air missile with a fibre-optic datalink for man-in-the-loop guidance, allowing the submarine crew to select and engage targets using the missile's imaging infrared seeker. Launched from standard 533mm torpedo tubes using a containerized launch system (4 missiles per tube). Range of approximately 20 km. Addresses the critical vulnerability of conventional submarines to anti-submarine warfare helicopters. Currently in advanced development for the Type 212CD submarine programme.
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- Unique capability: submarine-launched anti-air missile
- Fiber-optic guidance enables man-in-the-loop precision
- Multi-target capability (air, surface, land)
- Would give Type 212 submarines self-defense against ASW helicopters
- Still in development; no operational deployment
- Requires submarine to be at periscope depth; compromises stealth
- Limited warhead size
- Niche capability with small potential export market
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