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A torpedo for tomorrow's needs

3 min read

With naval warfare rapidly evolving, today's armed forces need torpedoes that are both easy to control and highly adaptable. Saab's new lightweight torpedo system, now under development for the toughest environment in the world, the Baltic Sea, addresses these key challenges.


The Baltic Sea is one of the most demanding marine environments on the planet. Just 70 metres deep on average, its brackish waters are crowded with rocks, islands, and small caves that make naval operations arduous and extremely challenging.

But these same characteristics also make the Baltic an ideal testing ground for developing sophisticated torpedoes. With the world’s navies looking for defence systems that can manage increasingly complex combat situations, a new lightweight torpedo system is about to begin testing in the demanding waters off Sweden’s east coast.

“In blue water (open sea) operations, a torpedo just needs to be able to go deep and achieve a high speed to catch the target,” explains Thomas Ljungqvist, Sales Director for Weapons and Sensors at Saab’s Business Unit Underwater Systems. “But in shallow waters like the Baltic Sea, you need a variety of speeds. You need a torpedo that can go slow until it has a lock on the target and can then speed up for the full attack, so a more sophisticated system.”


Adapted for the modern warfare

Ljungqvist explains the modifications will make the torpedo even more suitable to the rapidly changing global defence environment, where there are even greater requirements on weapons to be precise and efficient.

“Today, it’s very seldom that you have a full-scale war where two countries are fighting each other,” he says. “Instead, we are seeing more low-conflict scenarios where small-scale clashes are outside of war and where there’s civilian traffic around. You absolutely need to have true target indication on your weapon systems.”

Ljungqvist says the new generation torpedo system will address this need for precision in a variety of ways. Like the current Torpedo 45, the new system will employ a wire-control system. This will allow operators to target enemy assets with precision and safely abort attacks when required, for example if a civilian or other friendly vessel is at any risk.

“You can direct the torpedo to stop or select another target,” says Ljungqvist. If the wire breaks, the torpedo will either go for the designated target and kill it or in peace time, abort the mission and go into safe mode.”

The power to overcome countermeasures

Ljungqvist says that the new torpedo has a more efficient power system and more sophisticated guidance systems that will help it to overcome increasingly advanced submarine countermeasure systems.

“Modern torpedoes need a homing system that can differentiate between counter measures and the true target and to have endurance to continue the attack until the countermeasures are gone or the homing system has identified the target.

”Besides orders from the Royal Swedish Navy and recently also the Finnish Navy, Ljungqvist says there are also high levels of interest being expressed by other nations.

Key features

Length 2850 mm
Weight approx. 340 kg
Speed 10- to 40+ kts
Endurance 20+ km, 1+ hrs
Depth 300 + m
Homing System active/passive
fully digital sonar