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词条 Durjoy-class patrol craft
释义

  1. History

  2. Design

     Electronics  Armament 

  3. Ships in class

  4. See also

  5. References

{{Infobox ship image
Ship image=BNS Nirmul.jpgShip caption=BNS Nirmul
}}{{Infobox ship class overview		Name=Builders=*Wuchang Shipyard
  • Khulna Shipyard
BGD}}Class before=Class after=Subclasses=Cost=Built range=2011–presentIn service range=In commission range=2013–presentTotal ships building=Total ships planned=8Total ships completed=4Total ships cancelled=Total ships active=4Total ships laid up=Total ships lost=Total ships retired=Total ships preserved=
}}{{Infobox ship characteristics		Hide header=Header caption=Ship class=Ship type=Large patrol craftShip displacement=648 tons64.2|m|ftabbr=on} (overall)9|m|ftabbr=on}Ship height=4|m|ftabbr=on}Ship depth=Ship propulsion=2 shafts, 2 diesels28|kn|km/h}} (ASuW){{convert|25|kn|km/h}} (ASW)2500|nmi|abbr=on}} (ASuW){{convert|2000|nmi|abbr=on}} (ASW)Ship endurance=15 daysShip boats=Ship complement=60 personnel (ASuW)

70 personnel (ASW)

Ship sensors=
  • ASuW variant:
    • Type 360 Radar (SR60) Surface Search, E/F band
    • MR-123-02/76 Fire Control Radar for 76.2mm gun
    • Type 352 Radar (Square Tie) surface search and SSM fire control, I-band
    • Type 347G Radar (Rice Bowl) for 20mm cannon, I-band
    • ESS-3 bow mounted sonar
  • ASW variant:
    • Vision Master Chart Radar
    • JMA 3336 navigational Radar, X-band
    • SR47AG surface and air search Radar
    • TR47C tracking Radar
    • ESS-2B bow mounted sonar
Ship EW=Ship armament=
  • ASuW variant:
    • 1 × H/PJ-26 76.2 mm naval gun, forward;
    • 2 × 2 C-704 AShM;
    • 2 × Oerlikon 20 mm cannon;
    • 2 × 6-tube EDS-25A 250mm ASW rocket launcher
  • ASW variant:
    • 1 x NG 16-1 76.2 mm naval gun
    • 1 x CS/AN2 30 mm naval gun
    • 2 x triple torpedo tubes for TCU42A torpedoes
Ship aircraft=Ship aircraft facilities=Ship notes=
}}

The Durjoy class is a class of large patrol craft (LPC) of the Bangladesh Navy. A total of eight ships of this class are planned and four are serving the Bangladesh Navy as of 2017.

History

The Durjoy class is a class of large patrol crafts (LPC) of the Bangladesh Navy, designed to meet the longer patrolling and surveillance needs in the vast EEZ of Bangladesh in the Bay of Bengal as well as to perform limited offensive roles. These ships have a significant resemblance to the People's Liberation Army Navy Type 056 Jiangdao corvette, suggesting that the Durjoy class LPCs are scaled down version of the Type 056 corvette. The ships of this class are of two variants, Anti-surface warfare (ASuW) variant and Anti-submarine warfare (ASW) variant. The primary characteristics of the two variants are same but they differ in armaments and sensor suite.

Initially, a contract was signed in 2009 for two ships to be built at Wuchang Shipyard in China. The ships were of ASuW variant. The first, {{ship|BNS|Durjoy||6}} (P 811), was launched on 26 August 2012, while the second, {{ship|BNS|Nirmul||6}} (P 813), was launched on 27 September 2012. Both ships arrived in Bangladesh in February 2013.[1] The ships were commissioned on 29 August 2013.[2]

On 30 June 2014 the Bangladesh Navy signed a contract for the next two Durjoy-class vessels with Khulna Shipyard. These ships were constructed in Bangladesh under ToT from China. Keel laying of the ships was done on 6 September 2015.[3] The first two vessels made at Khulna Shipyard were commissioned on 8 November 2017.[4] These ships were of ASW variant.

Design

These ships are {{convert|64.2|m}} long, {{convert|9|m}} wide and have a {{convert|4|m}} draught with a displacement of 648 tonnes. The ships have a bulbous bow shape, which suggests they are designed to sustain heavy sea states. The ships have speed and range to support long missions. The LPCs are powered by triple Pielstick diesels driving three screws for a top speed of {{convert|28|kn}} for ASuW variant and {{convert|25|kn}} for ASW variant. The range of the ships is {{convert|2500|nmi}} for ASuW version and {{convert|2000|nmi}} for ASW version with an endurance of 15 days. The ASuW ships can carry 60 personnel while ASW ships can carry 70 personnel. They can carry one Rigid-hulled inflatable boat and has the support system to launch it.

Electronics

Anti-surface variant

The primary sensor of the ships of this variant is a Type 360 (SR60) Surface Search, E/F band radar. They carry a Russian MR-123-02/76[5] Fire Control Radar for 76.2mm H/PJ-26 gun and two I-band Type 347G Radar (Rice Bowl) for 20mm cannon. For fire control of C-704 missiles, these ships use Type 352 (Square Tie) I-band radar which can be used as surface search radar also. They use ESS-3 bow mounted sonar with an effective range of about {{convert|8000|m}} for underwater detection. A JRCSS combat management system (CMS) with at least three multifunction consoles is also fitted in the ships.

Anti-submarine variant

Primary sensor of the ships of ASW variant is a SR47AG Surface and Air Search radar. They carry a Chinese TR47C radar which is used as tracking radar. They carry Japanese JMA 3336 radar for navigation purpose. To help the navigational radar, the Vision Master chart radar is used. The ships have a ESS-2B bow mounted sonar with an effective range of about {{convert|8000|m}} for underwater detection..[6]

Armament

Anti-surface variant

The LPCs of this variant are armed with a single {{convert|76.2|mm|in|abbr=on|0}} H/PJ-26 naval gun and four C-704 surface to surface missiles (SSM) mounted aft. Besides, these ships have two Oerlikon 20 mm cannon mounted amidships which can be used for anti-aircraft role. For their ASW role, they have two forward-mounted 6-tube EDS-25A {{convert|250|mm|in|abbr=on|0}} ASW rocket launchers.

Anti-submarine variant

The ships of this variant uses a Chinese origin single {{convert|76.2|mm|in|abbr=on|0}} NG 16-1 naval gun as primary weapons. Besides, they have one CS/AN2 30mm single-barrel naval gun mounted amidships used as secondary weapon.For ASW role, these ships are armed with two triple torpedo tubes for TCU 24A torpedoes.[6]

Ships in class

 Pennant number  Name  Builder  Ordered  Launched  Acquired  Commissioned  Status 
P 811Durjoy|2013|2}}Wuchang Shipyard2009 26 August 2012 4 February 2013[1]29 August 2013[2] In active service
P 813Nirmul2} 27 September 2012 10 February 2013[1] In active service
P 814Durgam2}Khulna Shipyard30 June 2014 29 December 20168 November 2017[4] In active service
P 815Nishan2} 15 March 2017 In active service

See also

  • List of active ships of the Bangladesh Navy
  • Padma-class patrol vessel

References

1. ^1 2 {{cite news|url=http://www.daily-sun.com/details_yes_05-02-2013_China-built-warship-for-Navy-arrives-in-Ctg_400_1_10_1_8.html |archive-url=https://archive.is/20141124184500/http://www.daily-sun.com/details_yes_05-02-2013_China-built-warship-for-Navy-arrives-in-Ctg_400_1_10_1_8.html |dead-url=yes |archive-date=24 November 2014 |title=China-built warship for Navy arrives in Ctg |work=daily sun |date=5 February 2013 |accessdate=2 February 2015 }}
2. ^1 [https://web.archive.org/web/20151120005645/http://www.daily-sun.com/index.php?view=details&archiev=yes&arch_date=30-08-2013&type=&pub_no=600&cat_id=1&menu_id=1&news_type_id=1&news_id=136633]
3. ^{{cite news|url=http://www.bssnews.net/newsDetails.php?cat=0&id=517526&date=2015-09-06 |title=Keel Laying of two new warships at Khulna. |work=BSSNews |date=6 September 2015 |accessdate=6 September 2015}}
4. ^1 {{cite web|url=http://www.dhakatribune.com/bangladesh/2017/11/08/president-hamid-navy-ship-commissioning/| title=President Hamid commissions four new naval ships| publisher=The Dhaka Tribune|date= 8 November 2017| accessdate=9 November 2017}}
5. ^MR-123-02/76
6. ^1 {{cite web|url=http://w3.khulnashipyard.com/index.php/2012-10-20-20-43-28/ongoing-works-in-khulna-shipyard/new-ship-building-in-khulna-shipyard/243-lpc|title=2*Large Patrol Craft|publisher=Khulna Shipyard|date=|accessdate=16 September 2017}}
{{Durjoy-class LPC}}

2 : Durjoy-class LPC|2010s ships
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