Mandau-class fast attack craft

The Mandau-class is a class of four missile-armed fast attack craft operated by the Indonesian Navy. They were built by the Korea Tacoma shipyard from 1977 to 1980.

KRI Keris
Class overview
Builders: Tacoma Boatbuilding Company
Operators: Indonesian Navy
Preceded by: Kelap Lintah-class
Succeeded by: Klewang-class
Completed: 4
Active: 3
Lost: 1
General characteristics
Class and type: Missile boat
Displacement:
  • 250 tons (standard)
  • 290 tons (Full)
Length: 53.7 m (176 ft 2 in)
Beam: 8 m (26 ft 3 in)
Propulsion:
  • CODOG :
  • 1 General Electric-Fiat LM-2500 gas turbine
  • 2 MTU 12V331TC81 diesels
Speed: 41 knots (76 km/h; 47 mph)
Range: 2,600 nmi (4,815 km; 2,992 mi) at 14 knots (26 km/h; 16 mph)
Complement: 43
Sensors and
processing systems:
  • Decca AC1229
  • WM28 radars
  • NA-18 e/o director
  • DR2000 ECM suite
Armament:
  • 4 x MM38 Exocet SSM
  • 1 x 57/70 Bofors SAK Mk 1
  • 1 x 40/70 Bofors 350AFD
  • 2 x 20/85 S.20

Design

In 1975, Indonesia placed an order with the South Korean shipbuilder, Korea Tacoma International, for 4 PSK Mark 5 missile armed fast attack craft.[1][2] The design was based on Korea Tacoma's PSSM patrol boat built for the Republic of Korea Navy, which in turn was based on the Asheville-class gunboat built for the US Navy.[1][2]

The ships are 53.58 m (175 ft 9 in) long, with a beam of 8.00 m (26 ft 3 in) and a draught of 1.63 m (5 ft 4 in). Displacement is 250 long tons (250 t) standard and 290 long tons (290 t) full load.[3] The ships's machinery is arranged in a 2-shaft, Combined Diesel or Gas (CODOG) layout, with a single General Electric-Fiat LM2500 gas turbine rated at 25,000 shp (19,000 kW) powering the ship at high speeds, with two MTU 12V331 TC81 diesel engines rated at 1,120 bhp (840 kW) each, power the ship at lower speeds.[3] Maximum speed is 41 kn (47 mph; 76 km/h) using the gas turbine, and 17 kn (20 mph; 31 km/h) using the diesels.[1][2] Range is 2,500 nmi (2,900 mi; 4,600 km) at 17 kn (20 mph; 31 km/h).[3]

The ships are fitted with a single Bofors 57 mm SAK-57 Mk I gun forward, with a Bofors 40 mm L/70 gun aft, with two Rheinmetall 20 mm cannon providing close-in defence. Four mm 38 Exocet anti-ship missiles can be carried. The ships have a crew of 7 officers and 36 other ranks.[1]

A Racal Decca 1226 I-band surface search radar is fitted, while fire control is by a Signaal WM 28 fire control radar and a Selenia NA-18 optronic director.[1]

Ships
Name Hull number[1] Commissioned[1]
Mandau62120 July 1979
Rencong62220 July 1979
Badik623February 1980
Keris624February 1980

References
  1. Saunders 2002, p. 327
  2. Gardiner & Chumbley 1995, p. 181
  3. Baker 1998, p. 340

Bibliography
  • Baker, A.D. (1998). The Naval Institute Guide to Combat Fleets of the World 1998–1999. Annapolis, Maryland, USA: Naval Institute Press. ISBN 1-55750-111-4.CS1 maint: ref=harv (link)
  • Gardiner, Robert; Chumbley, Stephen, eds. (1995). Conway's All the World's Fighting Ships 1947–1995. Annapolis, Maryland, USA: Naval Institute Press. ISBN 1-55750-132-7.CS1 maint: ref=harv (link)
  • Saunders, Stephen, ed. (2002). Jane's Fighting Ships 2002–2003. Coulsdon, UK: Jane's Information Group. ISBN 0710624328.CS1 maint: ref=harv (link)
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