Seaward-class defense boats: Difference between revisions

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{{Use dmy dates|date=July 2022}}
{{Short description|Large patrol craft}}
{{Use Indian English|date=July 2022}}
{{Use dmy dates|date=July 2019}}
{|{{Infobox ship begin}}
{{Use Indian English|date=July 2019}}
{{Infobox ship image
{{Infobox ship
|Ship image=
|section1={{Infobox ship/image
|Ship caption=
| image =  
}}
| image_caption =  
{{Infobox ship class overview
}}
|Name=''Seaward'' class
 
|Builders= [[Garden Reach Shipbuilders and Engineers]]
|section2={{Infobox ship/class overview
|Operators= {{navy|India}}
| name = ''Seaward'' class
|Class before=
| builders = [[Garden Reach Shipbuilders and Engineers]]
|Class after= {{sclass|Trinkat|patrol vessel|4}}
| operators = {{navy|India}}
|Subclasses=
| class_before = [[Pulicat-class patrol boat|''Pulicat ''class]]
|Cost=
| class_after = {{sclass|Trinkat|patrol vessel|4}}
|Built range=
| subclasses =
|In service range=
| cost =
|In commission range=
| built_range =
|Total ships building=
| in_service_range =
|Total ships planned=
| in_commission_range =
|Total ships completed= 7
| total_ships_building =
|Total ships cancelled=
| total_ships_planned =
|Total ships active=
| total_ships_completed = 7
|Total ships laid up=
| total_ships_canceled =
|Total ships lost=
| total_ships_active =
|Total ships retired= 7
| total_ships_laid_up =
|Total ships preserved=
| total_ships_lost =
| total_ships_retired = 7
| total_ships_preserved =
}}
 
|section3={{Infobox ship/characteristics
| hide_header =
| header_caption =
| class =
| type = Large Patrol Craft
| tonnage =  
| displacement = 210 tons full load
| length = {{convert|37.5|m|abbr=on}}
| beam =
| height =
| draught =
| draft =
| depth =
| hold_depth =
| decks =
| deck_clearance =
| ramps =
| ice_class =
| power =
| propulsion = *2 × diesel motors with 6,820 hp
                *2 shafts
| speed = {{convert|30|kn|abbr=on}}
| range = {{convert|5800|nmi|abbr=on}} at {{convert|15|kn|abbr=on}}
| endurance =  
| test_depth =  
| boats =  
| capacity =  
| troops =  
| complement = 32
| crew =  
| time_to_activate =  
| sensors = BEL 1245 surface radar
| EW =  
| armament = *2 × Bofors 40mm/60 gun
              *1 × 7.62 mm MG
              *18 MK 7, 10 MK 12 depth charges
| armour =
| armor =
| aircraft =
| aircraft_facilities =
| notes =  
}}
}}
}}
{{Infobox ship characteristics
|Hide header=
|Header caption=
|Ship class=
|Ship type= Large Patrol Craft
|Ship tonnage=
|Ship displacement= 210 tons full load
|Ship length= {{convert|37.5|m|abbr=on}}
|Ship beam=
|Ship height=
|Ship draught=
|Ship draft=
|Ship depth=
|Ship hold depth=
|Ship decks=
|Ship deck clearance=
|Ship ramps=
|Ship ice class=
|Ship power=
|Ship propulsion=*2 × diesel motors with 6,820 hp
*2 shafts
|Ship speed= {{convert|30|kn|abbr=on}}
|Ship range= {{convert|5800|nmi|abbr=on}} at {{convert|15|kn|abbr=on}}
|Ship endurance=
|Ship test depth=
|Ship boats=
|Ship capacity=
|Ship troops=
|Ship complement= 32
|Ship crew=
|Ship time to activate=
|Ship sensors= BEL 1245 surface radar
|Ship EW=
|Ship armament=*2 × Bofors 40mm/60 gun
*1 × 7.62 mm MG
*18 MK 7, 10 MK 12 depth charges
|Ship armour=
|Ship armor=
|Ship aircraft=
|Ship aircraft facilities=
|Ship notes=
}}
|}


The '''''Seaward''-class defence boats''' are large patrol craft designed by [[Mazagon Dock Limited]] (MDL) and built by [[Garden Reach Shipbuilders and Engineers]] (GRSE) for the [[Indian Navy]]. All of these vessels have been decommissioned, due to the large maintenance overhead they require.
The '''''Seaward''-class defence boats''' are large [[Patrol boat|patrol craft]] designed by [[Mazagon Dock Limited]] (MDL) and built by [[Garden Reach Shipbuilders and Engineers]] (GRSE) for the [[Indian Navy]]. All of these vessels have been decommissioned, due to the large maintenance overhead they require.


==Midlife refits==
==Midlife refits==
The ships of this class were built with low strength mild steel and thin plates, and consequently had low corrosion tolerance. As such adhering to prescribed docking intervals was essential.
The ships of this class were built with low strength [[Carbon steel|mild steel]] and thin plates, and consequently had low corrosion tolerance. As such adhering to prescribed docking intervals was essential.


INS ''Seaward'' (T54) was commissioned in September 1982. Its medium refit was due in March 1988 and its long refit in April 1992. Ignoring the vulnerability to corrosion of this ship, the medium refit was delayed by over three years and was carried out from July 1991 to April 1992. As a result, the long refit could not be planned. However, another short refit including the replacement of the engines was taken up in December 1993. The short refit was converted into a medium refit in February 1994. While carrying out repairs, extensive damage to the hull below the waterline was noticed in March 1994. The medium refit was extended to May 1996 because the engines and other materials procured for this ship were used for carrying out ongoing repairs on another, similar, ship (SDBT-55).
INS ''Seaward'' (T54) was commissioned in September 1982. Its medium [[refit]] was due in March 1988 and its long refit in April 1992. Ignoring the vulnerability to corrosion of this ship, the medium refit was delayed by over three years and was carried out from July 1991 to April 1992. As a result, the long refit could not be planned. However, another short refit including the replacement of the engines was taken up in December 1993. The short refit was converted into a medium refit in February 1994. While carrying out repairs, extensive damage to the hull below the waterline was noticed in March 1994. The medium refit was extended to May 1996 because the engines and other materials procured for this ship were used for carrying out ongoing repairs on another, similar, ship (SDBT-55).


==Ships==
==Ships==


{| class="toccolours" align="center" border="1" cellspacing="1" cellpadding="2" style="border-collapse: collapse;"
{| class="wikitable"
|----- bgcolor=#006699
|-
|'''<span style="color:white;">&nbsp;Name&nbsp;</span>'''
!Name
|'''<span style="color:white;">&nbsp;Pennant&nbsp;</span>'''
!Pennant
|'''<span style="color:white;">&nbsp;Builder&nbsp;</span>'''
!Builder
|'''<span style="color:white;">&nbsp;Commissioned&nbsp;</span>'''
!Commissioned
|'''<span style="color:white;">&nbsp;Decommissioned&nbsp;</span>'''
!Decommissioned
|'''<span style="color:white;">&nbsp;Status&nbsp;</span>'''
!Status
|-
|-
| INS ''Seaward''
| INS ''Seaward''
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| INS ''Seawater''
| INS ''Seawater''
| T-55
| T-55
| [[Garden Reach Shipbuilders and Engineers|GRSE]]
| GRSE
|  
|  
|2008-2009
|2008-2009
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| INS ''Seawind''
| INS ''Seawind''
| T-56
| T-56
| [[Garden Reach Shipbuilders and Engineers|GRSE]]
| GRSE
|
|
|2008-2009
|2008-2009
Line 111: Line 114:
| INS ''Seawaves''
| INS ''Seawaves''
| T-57
| T-57
| [[Garden Reach Shipbuilders and Engineers|GRSE]]
| GRSE
|
|
|24 August 2006  
|24 August 2006  
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| INS ''Seastorm''
| INS ''Seastorm''
| T-58
| T-58
| [[Garden Reach Shipbuilders and Engineers|GRSE]]
| GRSE
|
|
|20 July 2010
|20 July 2010
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| INS ''Seasand''
| INS ''Seasand''
| T-59
| T-59
| [[Garden Reach Shipbuilders and Engineers|GRSE]]
| GRSE
|
|
|7 September 2009
|7 September 2009
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| INS ''Searock''
| INS ''Searock''
| T-60
| T-60
| [[Garden Reach Shipbuilders and Engineers|GRSE]]
| GRSE
|
|
|7 September 2009
|7 September 2009
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| [[Mauritius Police Force#National Coast Guard|CGS ''Guardian'']]
| [[Mauritius Police Force#National Coast Guard|CGS ''Guardian'']]
| T-61
| T-61
| [[Garden Reach Shipbuilders and Engineers|GRSE]]
| GRSE
|
|
|
|
|April 1993 gifted to [[Mauritius]].<ref>{{cite press release |title=Supply of two serviceable Main Engines to the Mauritius Police Force by the Government of India on a gratis basis |url=https://hcimauritius.gov.in/press?id=dJ62d |website=High Commission of Port Louis, Mauritius |accessdate=9 March 2020 |date=7 October 2022}}</ref> In service<ref>{{cite press release |title=The NCG to acquire high-speed crafts from foreign countries |url=http://www.govmu.org/English/News/Pages/The-NCG-to-acquire-high-speed-crafts-from-foreign-countries.aspx |website=Government of Mauritius|accessdate=9 March 2020 |date=12 December 2022}}</ref>
|April 1993 gifted to [[Mauritius]].<ref>{{cite press release |title=Supply of two serviceable Main Engines to the Mauritius Police Force by the Government of India on a gratis basis |url=https://hcimauritius.gov.in/press?id=dJ62d |website=High Commission of Port Louis, Mauritius |accessdate=9 March 2020 |date=7 October 2011}}</ref> In service<ref>{{cite press release |title=The NCG to acquire high-speed crafts from foreign countries |url=http://www.govmu.org/English/News/Pages/The-NCG-to-acquire-high-speed-crafts-from-foreign-countries.aspx |website=Government of Mauritius |accessdate=9 March 2020 |date=12 December 2019 |archive-date=12 December 2019 |archive-url=https://web.archive.org/web/20191212162609/http://www.govmu.org/English/News/Pages/The-NCG-to-acquire-high-speed-crafts-from-foreign-countries.aspx |url-status=dead }}</ref>
|}
|}


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==External links==
==External links==
* [http://www.bharat-rakshak.com/NAVY/SDBs.html  Seaward Defence Boats - Bharat Rakshak]
* [http://www.bharat-rakshak.com/NAVY/SDBs.html  Seaward Defence Boats - Bharat Rakshak] {{Webarchive|url=https://web.archive.org/web/20080616193615/http://www.bharat-rakshak.com/NAVY/SDBs.html |date=16 June 2008 }}
* [http://www.globalsecurity.org/military/world/india/p-sdb.htm SDB - Seaward Defense Boats - Global Security]
* [http://www.globalsecurity.org/military/world/india/p-sdb.htm SDB - Seaward Defense Boats - Global Security]


{{Ship classes of the Indian Navy}}
{{Ship classes of the Indian Navy}}


[[Category:Patrol vessels of the Indian Navy]]
[[Category:Patrol boats of the Indian Navy]]

Latest revision as of 03:23, 6 March 2026


Template:Infobox ship

The Seaward-class defence boats are large patrol craft designed by Mazagon Dock Limited (MDL) and built by Garden Reach Shipbuilders and Engineers (GRSE) for the Indian Navy. All of these vessels have been decommissioned, due to the large maintenance overhead they require.

Midlife refits[edit | edit source]

The ships of this class were built with low strength mild steel and thin plates, and consequently had low corrosion tolerance. As such adhering to prescribed docking intervals was essential.

INS Seaward (T54) was commissioned in September 1982. Its medium refit was due in March 1988 and its long refit in April 1992. Ignoring the vulnerability to corrosion of this ship, the medium refit was delayed by over three years and was carried out from July 1991 to April 1992. As a result, the long refit could not be planned. However, another short refit including the replacement of the engines was taken up in December 1993. The short refit was converted into a medium refit in February 1994. While carrying out repairs, extensive damage to the hull below the waterline was noticed in March 1994. The medium refit was extended to May 1996 because the engines and other materials procured for this ship were used for carrying out ongoing repairs on another, similar, ship (SDBT-55).

Ships[edit | edit source]

Name Pennant Builder Commissioned Decommissioned Status
INS Seaward T-54 GRSE September 1982 20 Jan 2006 Sunk to be made into an artificial reef
INS Seawater T-55 GRSE 2008-2009 Inactive
INS Seawind T-56 GRSE 2008-2009
INS Seawaves T-57 GRSE 24 August 2006
INS Seastorm T-58 GRSE 20 July 2010
INS Seasand T-59 GRSE 7 September 2009
INS Searock T-60 GRSE 7 September 2009
CGS Guardian T-61 GRSE April 1993 gifted to Mauritius.[1] In service[2]

References[edit | edit source]

  1. ↑ "Supply of two serviceable Main Engines to the Mauritius Police Force by the Government of India on a gratis basis". High Commission of Port Louis, Mauritius (Press release). 7 October 2011. Retrieved 9 March 2020.
  2. ↑ "The NCG to acquire high-speed crafts from foreign countries". Government of Mauritius (Press release). 12 December 2019. Archived from the original on 12 December 2019. Retrieved 9 March 2020.

External links[edit | edit source]

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