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Effectiveness analysis of a hard-kill underwater defense system for surface warships against wake-homing torpedo attack

  • Journal of Advances in Military Studies
  • Abbr : AdvMil
  • 2023, 6(2), pp.1~15
  • DOI : 10.37944/jams.v6i2.209
  • Publisher : Institute of Defense Acquisition Program
  • Research Area : Social Science > Military Science > Other Military Science
  • Received : May 27, 2023
  • Accepted : August 18, 2023
  • Published : August 31, 2023

Myoungin Shin 1 Hong Woo-young 2 Jinho Lee 3

1국방과학연구소
2세종대학교
3해군사관학교

Accredited

ABSTRACT

We conducted simulations to analyze the effects of a hard-kill-type underwater defense system that defends friendly warships against an enemy wake-homing torpedo. Assuming that the enemy torpedo is a wake-homing torpedo, our surface warship detours to the prespecified evasive course by firing a hard-kill-type system, which is modeled as a passive acoustic homing-torpedo, to attack the enemy torpedo. We analyzed the effectiveness of a warship’s survival probability via Monte Carlo simulation, given the probabilistic angles of the launched torpedoes, to compare two cases where one used only evasive maneuvering and the other used the hard-kill-type underwater defense system with evasion at the same time. By changing the maximum torpedo detection range of a warship and the torpedo’s initial location, we observed that the resulting survival probability of a warship was above 61% with a hard-kill-type defense system, whereas it remained at 34% without a hard-kill defense system, the necessity of a hard-kill underwater defense system, especially against wake-homing torpedoes.

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