Klewang-class fast attack craft

Stealth trimaran fast attack craft of Indonesian Navy

KRI Klewang in 2012

Class overview
Name| Klewang class
Builders| PT Lundin Industry Invest
Operators|  Indonesian Navy
Preceded by| Mandau class
Built| 2010–2021
In commission| 2022–present
Planned| 4
Completed| 2
Active| 1
Lost| 1
General characteristics
Type| Fast attack craft
Displacement| 219 t (216 long tons)
Length| 63 m (206 ft 8 in)
Beam| 16 m (52 ft 6 in)
Draught| 1.2 m (3 ft 11 in)
Installed power| 7,200 horsepower (5.4 MW)
Propulsion|

* 4 × MAN V12 diesels
* 4 × MJP 550 waterjets

Speed| 35 knots (65 km/h; 40 mph)
Range| 2,000 nmi (3,704 km; 2,302 mi) at 16 knots (30 km/h; 18 mph)
Boats & landing
craft carried| 1 × 11 m high-speed RHIB
Complement| 29
Armament|

* Planned on Klewang
* 4-8 × C-705 SSM
* 1 × Type 730 CIWS
* Golok as commissioned[1]
* 1 × 20 mm Yugoimport M71/08
* 2 × 12.7 mm M2 Browning
* Planned on Golok[2]
* Naval Strike Missile

The Klewang-class fast attack craft is a stealth, wave-piercing, carbon trimaran fast attack craft built by PT Lundin Industry Invest and designed by LOMOcean Marine.[3] Shortly after being floated out, on 28 September 2012, KRI Klewang was destroyed by fire while being outfitted at shipyard. The second ship in the class KRI Golok was launched on 21 August 2021.

## Design

[edit]

KRI Klewang has a length of 63 m (207 ft), a beam of 16 m (52 ft), with a draught of 1.2 m (3.9 ft), and displacement of 219 t (216 long tons).[3] The vessel was powered by four MAN V12 diesel engines with total power output of 7,200 horsepower (5.4 MW), which propelled four MJP 550 waterjets, with two located on the outrigger and the other two on the main hull. Klewang has a maximum speed of 35 knots (65 km/h), with cruising speed at 22 knots (41 km/h).[3] She has a range of around 2,000 nautical miles (3,700 km) at 16 knots (30 km/h). The vessel has a complement of 29 personnel, including a team of special forces.[3]

Klewang was planned to be armed with four and up to eight C-705 anti-ship missiles in enclosed launchers and a Type 730 CIWS in stealthy turret. According to the builder, the vessel also able to be armed with Penguin or Exocet missiles and naval gun of up to 57 mm caliber without affecting the stability of the vessel. She also carried an 11 m high-speed rigid-hulled inflatable boat for the special forces team.[3]

## History

[edit]

The Indonesian Navy ordered the first of four for delivery starting in 2012.[4][5][6][7] The first of these was named KRI Klewang and was launched on 29 August 2012; however, only four weeks later the ship caught fire on 28 September while undergoing fit-out in Banyuwangi, and was completely destroyed.

## Replacement

[edit]

A replacement 63 m trimaran was ordered in Banyuwangi, and was expected to be launched in early 2016. In the interim period, advances in infusable vinylester resin chemistry have seen the incorporation of nano particles into the resin. These particles aid the transfer of the resin through the carbon/glass fibre matrix and allow the use of fire retardant grade vinylester for infusion. This makes the carbon fibre composite structure of the new vessel self-extinguishing.[8] The ship was launched on 21 August 2021, and named as KRI Golok (hull no. 688).[9] Golok was commissioned on 14 January 2022 at Surabaya.[10]

## Ship in the class

[edit]

Ships  | Pennant number  | Launched  | Commissioned  | Builder  | Notes

|
|
|
|
|

KRI Klewang | 625 (X3K)  | 29 August 2012  |  | PT Lundin Industry Invest | Destroyed by fire in 2012
KRI Golok | 688  | 21 August 2021  | 14 January 2022  | [9]

## References

[edit]

1. ^ "TNI AL Kukuhkan KCR Stealth Trimaran KRI Golok 688, Akan Ditempatkan Di Wilayah Perbatasan". indomiliter.com (in Indonesian). 15 January 2022. Retrieved 22 January 2022.
2. ^ "MAKIN SANGAR, RUDAL BERDAYA TEMBAK 250 KM AKAN PERKUAT KAPAL-KAPAL PERANG TNI AL". TNI Angkatan Laut (in Indonesian). 9 February 2022. Retrieved 10 February 2022.
3. ^ a b c d e Mrityunjoy Mazumdar (September 4, 2012). "Indonesia Launches First Klewang-Class Large Trimaran Missile Boat". Defense Media Network.
4. ^ ВМС Индонезии заказали четыре малозаметных тримарана [Indonesian navy ordered the four tri-stealth] (in Russian). ITAR-TASS. 24 January 2012. "ВМС Индонезии заказали четыре малозаметных тримарана X3K с ракетным вооружением. Тримараны, изготовление которых обеспечит компания Lundin Industry Invest, будут иметь корпуса из углепластика. (Indonesian navy ordered the four tri-subtle X3K with missile weapons. Trimarans, production company which will provide Lundin Industry Invest, will have a body of carbon fiber.)"
5. ^ ВМС Индонезии вооружатся малозаметными тримаранами [Indonesian navy arm themselves with inconspicuous trimaran]. lenta.ru (in Russian). 25 January 2012. "ВМС Индонезии заказали у компании Lundin Industry Invest четыре малозаметных ракетных тримарана X3K с корпусами из углепластика, сообщает ИТАР-ТАСС со ссылкой на Jane's Defence Weekly. (Indonesian navy ordered the company Lundin Industry Invest four stealth missile tri X3K with shells made of carbon fiber, according to ITAR-TASS reported with reference to Jane's Defence Weekly.)"
6. ^ Hamdani, Irul (2010-10-14). "TNI AL Akan Miliki Kapal Cepat Rudal Akhir Tahun 2011" [Navy Fast Missile Vessel By Year-End 2011]. detikSurabaya (in Indonesian). "TNI Angkatan Laut (AL) dipastikan akan segera memiliki Kapal Cepat Rudal (KCR) Trimaran. Kapal didanai Anggaran dan Belanja Negara itu masih dalam proses pembuatan di PT Lundin Industry Invest di Banyuwangi. (The Navy will likely soon have a Quick Ship Missile (KCR) Trimaran. Ship funded and Expenditure Budget is still in the process of making the PT Lundin Industry Invest in Banyuwangi.)"
7. ^ "63m Fast Missile Trimaran". North Sea Boats.
8. ^ Jakarta Post: Navy vessel catches fire in Banyuwangi Archived 2012-10-01 at the Wayback Machine (28 September 2012).
9. ^ a b "KRI Golok-688 resmi diluncurkan sebagai pengganti KRI Klewang-625". airspace-review.com (in Indonesian). 21 August 2021. Retrieved 21 August 2021.
10. ^ "Peresmian Dua Kapal Perang RI, KRI Wahidin Sudirohusodo dan KRI Golok-688". tempo.co (in Indonesian). 15 January 2022. Retrieved 15 January 2022.

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