K745 Blue Shark

• Name — K745 Blue Shark K745 청상어 경어뢰 • Origin — South Korea • Type — Lightweight ASW torpedo • Is Missile — yes • Used By — See Operators • Designer — Agency for Defense Development • Design Date — 1995 • Manufacturer — LIG Defense & Aerospace • Production Date — 2005–present • Weight — 280 kg • Length — 2.7 m • Width — 0.32 m • Vehicle Range — 19 km • Speed — 45+ knots (83+ km/h) • Guidance — Acoustic • Launch Platform — Vessel / aircraft / helicopter

• Illustration — AW159 Wildcat helicopter of the Philippine Navy armed with K745 Blue Shark torpedoes taken at the Philippine Fleet Defense Expo (PFDX) 2023 The Blue Shark torpedo can be deployed from surface ships, ASW helicopters and maritime patrol aircraft. Production cost for each torpedo is about ₩ 1,000,000,000. Blue Shark torpedoes are fitted to the Incheon, Daegu- and Chungnam classes of frigates as well as to the Sejong the Great-class of destroyers. It is exported to the Philippines as part of the acquisition process for both the Jose Rizal-class, and Miguel Malvar-class frigates and Augusta-Westland AW159 helicopters.

An improved variant, the lightweight torpedo-2 is being developed by LIG Nex1. New capabilities include longer range and lesser vulnerability to decoys. The research and development program is expected to be completed in 2029.

• Philippines: Philippine Navy • South Korea: Republic of Korea Navy

• APR-3E torpedo - Russian equivalent • Mark 54 Lightweight Torpedo - US Navy's equivalent • A244-S - Italian equivalent • MU90 Impact - French/Italian equivalent • Sting Ray (torpedo) - British equivalent • TAL Shyena - Indian equivalent • Yu-7 torpedo - Chinese equivalent • Type 97 light weight torpedo (G-RX4) - Japanese equivalent