The Israeli Navy’s German-built Dolphin-type submarines are playing a critical strategic role in Israel’s ongoing multi-front war, serving as a key deterrent against Iran and its proxies.
These advanced diesel-electric submarines are equipped with highly classified systems, including an AI-integrated sonar developed by Israeli company Rafael. Sources report the sonar delivers “much enhanced capabilities” through the use of AI algorithms that filter background noise, detect low-noise-signature vessels and learn from previous encounters to continuously improve detection performance over time.
Equipped with air-independent propulsion (AIP), the Dolphin submarines can remain submerged for extended periods without external air supply, according to foreign media. This significantly increases their operational endurance and stealth.
In the current conflict, the submarines contribute to intelligence gathering, covert surveillance of enemy coastlines and precision strikes using long-range missiles or torpedoes. They also protect offshore gas rigs and patrol key Mediterranean and Gulf routes amid ongoing threats from Hezbollah, Houthis and Iran-backed forces.
The submarines bolster Israel’s second-strike nuclear deterrence capability, ensuring the ability to retaliate even if land-based assets are compromised. At least one Dolphin submarine has reportedly been deployed to the Gulf to counter potential Iranian escalation.
The primary offensive weapon of the Dolphin fleet is the Israeli-designed Popeye Turbo submarine-launched cruise missile (SLCM), which carries an estimated range of at least 1,500 km.