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Torped 613

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Heavyweight torpedo
Torped 613 (TP613)
TypeHeavyweight torpedo
Place of originSweden
Service history
In service1983–present (Torped 613)
Used bySweden, Norway, Denmark, Poland, Singapore
Production history
ManufacturerFörenade Fabriksverken (FFV)
Specifications
Mass1,765 kg (3,891 lb)
Length7.025 m (23 ft 0.6 in)
Diameter533 mm (21 in)
WarheadHexotonal NSL 51
Warhead weight250 kg (550 lb)
Detonation
mechanism		Inertial and proximity
EnginePiston engine
PropellantBipropellant HTP/Ethanol
Operational
range		30 km (16 nmi) low-speed, 20 km (11 nmi) high-speed
Maximum speed >45 kn (83 km/h) high-speed
Guidance
system		Wire-guided, acoustic homing, wake homing
Launch
platform		Submarines, MTBs, shore batteries

Torped 613 (TP613) is a heavyweight torpedo still in use by the Swedish Navy.

Description

Torped 613 is wire-guided and has a dual passive and active sonar seeker head that sends back information through the guidance wire. The torpedo was developed in the 1970s as a cooperation project between Denmark, Norway and Sweden. Testing was performed during the period spanning from 1981 to 1983.

The TP613 was developed during the late 1970s and early 1980s through a collaboration between the navies in Denmark, Norway and Sweden. Production began in 1983, with first deliveries following in 1984. The weapon incorporates terminal homing and two-way wire guidance. Numerous units of TP612 were upgraded into TP613 after its introduction.

Like the older Swedish Torped 61 introduced in 1968, it is driven by a bipropellant piston engine using high-test peroxide and alcohol, which gives long range and a minimum exhaust consisting of water vapor and carbon dioxide. Consequently, the weapon is wakeless.

The torpedo is planned to be replaced by the more modern Torped 62.

Short history of the TP61-series torpedoes:

  • TP61, ca 1970 (developed from several previous HTP-propulsioned torpedoes starting in 1955): Straight-running anti-surface torpedo for use with submarines and surface vessels.
  • TP611: Wire-guided version of the TP61.
  • TP612: Further development of the TP611 with "swim-out" launch from submarine tubes and improved noise-profile.
  • TP618, ca 1980: Export version of the TP612 (increased speed and less noise-reduction).
  • TP613, ca 1982: Development of the TP612 with passive-hydrophone target-seeker and pistol. Two-way data communications, and engine with two speeds which could be changed during the run.
  • TP617, ca 1982: Export version of the TP613, identical, with some degraded parameters in software for hydrophone-control and pistol giving it a slightly reduced performance.

Operators

Multiple units of the Torped 613 on the deck of the HMS Pelikanen (A247).

References

  • Klintebo, Roderick (2004). Det svenska ubåtsvapnet, 1904-2004. Forum navales skriftserie, 9 (in Swedish). Stockholm: Literatim. ISBN 978-91-973075-3-6. OCLC 71502578.
  1. Friedman, Norman (1989). The Naval Institute Guide to World Naval Weapon Systems, 1989. United States Naval Institute. p. 421-422. ISBN 0-87021-793-3.
  2. Friedman, Norman (1991). The Naval Institute Guide to World Naval Weapon Systems, 1991/92. United States Naval Institute. p. 700. ISBN 0-87021-288-5.
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