SAAB’s Light Weight Torpedo

Dmitry Shulgin reports the successful testing of a new light weight torpedo from SAAB that offers some unique feature un-available on US Navy light weight torpedoes.

While American light weight torpedoes are explicitly anti-submarine weapons that at least, in the case of the Mk46 mod5, might have an incidental anti-surface capability, these are expressly identified as being for both anti-submarine and anti-surface use. Unlike USN light weight torpedoes, it has the option of wire guidance. It is designed specifically for operation in  difficult littoral environments while also being usable in deeper water.

This new torpedo is designated the Torped 47, it replaces an earlier type with similar characteristics, the Torped 45. Compared to the US Navy’s Mk54, they are longer (2.85 m (9.35′) vs (2.72m (8.91′), heavier (340 kg (750 lb) vs 276 kg (608 lb)), and of greater diameter (400mm (15.75″) vs 324mm (12.75″)).


Finnish Navy conducted its first torpedo firing from FNS Tornio Hamina-class fast-attack craft in the Archipelago Sea with a TP45 torpedo. (Picture source Finnish Navy)

They use a LiFPO4 battery which is rechargeable, so it is likely practice torpedoes can be used numerous times and quickly returned to service. Believe this is more difficult with the Otto fueled USN torpedoes.


11 thoughts on “SAAB’s Light Weight Torpedo

    • Agreed! I can see where this has obvious advantages over the CVLWT and other American lightweight torpedoes currently in service.

      One can put a SLWT in a cargo container launch tube onboard a LCS, OPC, FRC, NSC, or FFGX and have it fired from the helicopter deck, stern RHIB ramp well, LCS side cargo door, or a HH-60. The same can be said aboard USVs and ESBs.

  1. Looks like just the ticket for CG use in the littorals. The Swedes do some smart and innovative stuff.

    An FRC with the ability to carry and launch a couple of these suddenly has a very precise and potent ship stopping capability.

  2. This system was also selected for Finland’s upcoming ice-class corvettes and will also be retrofitted to their older missile boats.

  3. Pingback: Defence and Freedom: Link drop July 2020 | PG-Intel

    • The second half of this video show a nice video image of the Finnish Navy new planned Pohjanmaa Class corvette. I like this design. Some on this forum have commented on the idea for a light frigate or corvette of a common design (hull) that both the Navy and CG could share. I would like to offer this design for consideration. At 114m in length, 16m in beam and 3,900T it is just about the size of the OPC. It will be a true multi-role combatant able to operate in all warfare domains. It has CODLAG propulsion and speed of over 26 knots, (range is a little lacking). Armed with MK3 57mm, 8 MK-41 VLS (32 ESSM), 8 SSM, Saab’s Torped 47 torpedoes and an a CIWS, It will have helideck and hangar to a accommodate a single helicopter or multiple UAVs. Sensors are Sea Giraffe 4A 4 fixed-face AESA radar (same as the rotating radar in OPC), hull mounted, variable -depth and towed array sonars. Two of the ships’ four diesel generators are installed on double resilient mounting to reduce noise and vibration during ASW missions. It will be fitted with two bow thrusters for low-speed maneuvering. And a feature that would be applicable for both CG and Navy is that the corvettes will feature an ice-strengthened hull with the ability to operate independently in seasonal ice. The vessel has accommodation facilities for up to 120 personnel, about the same as the OPC. If chosen the Navy may want to lengthen the hull to accommodate 16-24 VLS, but 8 VLS would be fine for the CG needs. With a design of this size it could be constructed in large numbers at several different US shipyards. I figure the cost per unit at < $600 mil. Purchase and construction of this design would be an affordable why to quickly increase the numbers of operational hulls for both the Navy and CG with a common hull design.

Leave a Reply to Malph Cancel reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s