Torpedo 617

Torpedo 617 is a 21” torpedo intended for surface targets, providing passive homing combined with wire guidance. It is designed and manufactured by Saab Dynamics. Torpedo 617 is based on the well-proven Torpedo 61, and retains the reliable and efficient thermal propulsion system using hydrogen peroxide/alcohol/water as propellants. The total number of performed firings using the thermal propulsion system has reached approximately 17,000 rounds. Torpedo 617 is a homing, wire-guided, long-range torpedo for launching from submarines and surface ships against surface targets.

Homing system
The homing system is designed for use against surface targets, and has demonstrated excellent acquisition capabilities against a broad range of targets. The combination of homing and wire guidance results in very high hit probability even at long firing ranges.

Proximity fuzes
The war torpedo is equipped with both an impact and a computerised proximity fuze. Both fuzes can be controlled from the launching fire control. The proximity fuze is tested on every practice run.

Communication
The guidance wire communication link permits the ship to transmit orders to the torpedo, controlling speed, depth, course, target data etc. The torpedo reports its position, speed, course and depth, homing-system parameters and target noise.

Technical specifications
Two speeds selectable during the run.