INS Jamuna (U21) - Revision history

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← Older revision		Revision as of 13:47, 18 September 2022
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	==History==		==History==
	HMIS ''Jumna'' was ordered in 1939, and built by [[William Denny and Brothers]]. She was [[Ship commissioning\|commissioned]] in 1941,<ref name=ub>{{cite web \|url=http://www.uboat.net/allies/warships/ship/3915.html \|title=HMIS Jumna (U 21) \|website=uboat.net \|access-date=6 April ~~2022~~}}</ref> and with [[World War II]] underway, was immediately deployed as a convoy escort. ''Jumna'' served as an anti-aircraft escort during the [[Dutch East Indies campaign\|Java Sea campaign]] in early 1942, and was involved in intensive anti-aircraft action against attacking Japanese twin-engined level bombers and dive bombers, claiming five aircraft downed from 24–28 February 1942:<br>		HMIS ''Jumna'' was ordered in 1939, and built by [[William Denny and Brothers]]. She was [[Ship commissioning\|commissioned]] in 1941,<ref name=ub>{{cite web \|url=http://www.uboat.net/allies/warships/ship/3915.html \|title=HMIS Jumna (U 21) \|website=uboat.net \|access-date=6 April 2016}}</ref> and with [[World War II]] underway, was immediately deployed as a convoy escort. ''Jumna'' served as an anti-aircraft escort during the [[Dutch East Indies campaign\|Java Sea campaign]] in early 1942, and was involved in intensive anti-aircraft action against attacking Japanese twin-engined level bombers and dive bombers, claiming five aircraft downed from 24–28 February 1942:<br>
	''"Chief Ordnance Artificer, Peter Cajetan Mascarenhas was awarded the Distinguished Service Medal for his part in defending the convoy against the Japanese aircraft which attacked it in the Sunda Strait. The citation in the London Gazette said that he had carried out repairs to guns during dive-bombing and machine-gun attacks, and had shown great devotion to duty. Leading Seaman Khan Mohammed, who displayed skill and initiative in engaging the Japanese with an Oerlikon gun was also awarded the Distinguished Service Medal. The Gunnery Officer, Lieut. A.J.V. LeCocq, R.I.N.V.R., was decorated with the Distinguished Service Cross and six of the Jumna's ratings were mentioned in Despatches, having shown "devotion to duty during heavy and continuous dive-bombing attacks".''<ref>Collins, p.100 - 102</ref>		''"Chief Ordnance Artificer, Peter Cajetan Mascarenhas was awarded the Distinguished Service Medal for his part in defending the convoy against the Japanese aircraft which attacked it in the Sunda Strait. The citation in the London Gazette said that he had carried out repairs to guns during dive-bombing and machine-gun attacks, and had shown great devotion to duty. Leading Seaman Khan Mohammed, who displayed skill and initiative in engaging the Japanese with an Oerlikon gun was also awarded the Distinguished Service Medal. The Gunnery Officer, Lieut. A.J.V. LeCocq, R.I.N.V.R., was decorated with the Distinguished Service Cross and six of the Jumna's ratings were mentioned in Despatches, having shown "devotion to duty during heavy and continuous dive-bombing attacks".''<ref>Collins, p.100 - 102</ref>

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← Older revision		Revision as of 13:47, 18 September 2022
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	\|Ship fate=Broken up		\|Ship fate=Broken up 1981
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	\|Ship class={{sclass-\|Black Swan\|sloop\|0}} [[sloop-of-war\|sloop]]		\|Ship class={{sclass\|Black Swan\|sloop\|0}} [[sloop-of-war\|sloop]]
	\|Ship displacement=*1,250 tons original		\|Ship displacement=*1,250 tons original
	*1,350 tons modified		*1,350 tons modified
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	'''HMIS ''Jumna'' (U21)''' was a {{sclass-\|Black Swan\|sloop\|0}} [[Sloop-of-war\|sloop]], which served in the [[Royal Indian Navy]] (RIN) during [[World War II]].		'''HMIS ''Jumna'' (U21)''' was a {{sclass\|Black Swan\|sloop\|0}} [[Sloop-of-war\|sloop]], which served in the [[Royal Indian Navy]] (RIN) during [[World War II]].

	After India became a republic on 26 January 1950, the vessel was renamed as the [[Indian Navy]]'s '''INS ''Jamuna'''''.		After India became a republic on 26 January 1950, the vessel was renamed as the [[Indian Navy]]'s '''INS ''Jamuna'''''.

	==History==		==History==
	HMIS ''Jumna'' was ordered in 1939, and built by [[William Denny and Brothers]]. She was [[Ship commissioning\|commissioned]] in 1941,<ref name=ub>{{cite web \|url=http://www.uboat.net/allies/warships/ship/3915.html \|title=HMIS Jumna (U 21) \|website=uboat.net \|access-date=6 April ~~2016~~}}</ref> and with [[World War II]] underway, was immediately deployed as a convoy escort. ''Jumna'' served as an anti-aircraft escort during the [[Dutch East Indies campaign\|Java Sea campaign]] in early 1942, and was involved in intensive anti-aircraft action against attacking Japanese twin-engined level bombers and dive bombers, claiming five aircraft downed from 24–28 February 1942:<br>		HMIS ''Jumna'' was ordered in 1939, and built by [[William Denny and Brothers]]. She was [[Ship commissioning\|commissioned]] in 1941,<ref name=ub>{{cite web \|url=http://www.uboat.net/allies/warships/ship/3915.html \|title=HMIS Jumna (U 21) \|website=uboat.net \|access-date=6 April 2022}}</ref> and with [[World War II]] underway, was immediately deployed as a convoy escort. ''Jumna'' served as an anti-aircraft escort during the [[Dutch East Indies campaign\|Java Sea campaign]] in early 1942, and was involved in intensive anti-aircraft action against attacking Japanese twin-engined level bombers and dive bombers, claiming five aircraft downed from 24–28 February 1942:<br>
	''"Chief Ordnance Artificer, Peter Cajetan Mascarenhas was awarded the Distinguished Service Medal for his part in defending the convoy against the Japanese aircraft which attacked it in the Sunda Strait. The citation in the London Gazette said that he had carried out repairs to guns during dive-bombing and machine-gun attacks, and had shown great devotion to duty. Leading Seaman Khan Mohammed, who displayed skill and initiative in engaging the Japanese with an Oerlikon gun was also awarded the Distinguished Service Medal. The Gunnery Officer, Lieut. A.J.V. LeCocq, R.I.N.V.R., was decorated with the Distinguished Service Cross and six of the Jumna's ratings were mentioned in Despatches, having shown "devotion to duty during heavy and continuous dive-bombing attacks".''<ref>Collins, p.100 - 102</ref>		''"Chief Ordnance Artificer, Peter Cajetan Mascarenhas was awarded the Distinguished Service Medal for his part in defending the convoy against the Japanese aircraft which attacked it in the Sunda Strait. The citation in the London Gazette said that he had carried out repairs to guns during dive-bombing and machine-gun attacks, and had shown great devotion to duty. Leading Seaman Khan Mohammed, who displayed skill and initiative in engaging the Japanese with an Oerlikon gun was also awarded the Distinguished Service Medal. The Gunnery Officer, Lieut. A.J.V. LeCocq, R.I.N.V.R., was decorated with the Distinguished Service Cross and six of the Jumna's ratings were mentioned in Despatches, having shown "devotion to duty during heavy and continuous dive-bombing attacks".''<ref>Collins, p.100 - 102</ref>

	On 12 February 1944, The [[Japanese submarine Ro-110]] was depth charged and sunk east-south-east off Visakhapatnam, India by the Indian sloop ''Jumna'' and the Australian minesweepers {{HMAS\|Launceston\|J179\|6}} and {{HMAS\|Ipswich\|J186\|6}}. ''Ro-110'' had attacked convoy JC 36 (Colombo-Calcutta) and torpedoed and damaged the British merchant ''Asphalion'' (6274 GRT).<ref>{{cite web \|title=IJN Submarine RO-110 \|url=http://www.combinedfleet.com/RO-110.htm \|website=Combined fleet \|access-date=6 May 2021}}</ref>		On 12 February 1944, The [[Japanese submarine Ro-110]] was depth charged and sunk east-south-east off [[Visakhapatnam]], India by the Indian sloop ''Jumna'' and the Australian [[Minesweeper\|minesweepers]] {{HMAS\|Launceston\|J179\|6}} and {{HMAS\|Ipswich\|J186\|6}}. ''Ro-110'' had attacked convoy JC 36 (Colombo-Calcutta) and torpedoed and damaged the British merchant ''Asphalion'' (6274 GRT).<ref>{{cite web \|title=IJN Submarine RO-110 \|url=http://www.combinedfleet.com/RO-110.htm \|website=Combined fleet \|access-date=6 May 2021}}</ref>

	In early January 1945, she was deployed with {{ship\|HMIS\|Narbada\|U40\|6}} to support the landing of the 74th Indian Brigade of the [[British Indian Army]] on the [[Akyab]] Peninsula, as a part of [[Operation Lightning ~~(Burma)\|Operation Lightning]]~~. ''Jumna'' and ''Narbada'' engaged Japanese batteries up the [[Kaladan River]] near [[Ponnagyun]]. After embarking troops, she joined Task Force 64 headed by {{HMS\|Phoebe\|43\|6}} for support of landing by 3rd British Commando Brigade between Akyab and Ramree with the destroyer {{HMAS\|Napier\|G97\|6}} and HMIS ''Narbada''.		In early January 1945, she was deployed with {{ship\|HMIS\|Narbada\|U40\|6}} to support the landing of the 74th Indian Brigade of the [[British Indian Army]] on the [[Akyab]] Peninsula, as a part of Operation Lightning. ''Jumna'' and ''Narbada'' engaged Japanese batteries up the [[Kaladan River]] near [[Ponnagyun]]. After embarking troops, she joined Task Force 64 headed by {{HMS\|Phoebe\|43\|6}} for support of landing by 3rd British Commando Brigade between Akyab and [[Battle of Ramree Island\|Ramree]] with the destroyer {{HMAS\|Napier\|G97\|6}} and HMIS ''Narbada''.

	Following Indian independence, she was allotted to India, becoming '''INS''' ''Jamuna'' in 1950 when India became a republic. She was later converted to a survey vessel and was decommissioned on 31 December 1980.<ref>{{cite book \|last=Hiranandani \|first=Gulab Mohanlal \|date=2005 \|title=Transition to Eminence: History of the Indian Navy, 1976-1990 \|publisher=Lancer Publishers \|page=375 \|isbn=81-7062-266-2}}</ref>		Following Indian independence, she was allotted to India, becoming '''INS''' ''Jamuna'' in 1950 when India became a republic. She was later converted to a [[survey vessel]] and was decommissioned on 31 December 1980.<ref>{{cite book \|last=Hiranandani \|first=Gulab Mohanlal \|date=2005 \|title=Transition to Eminence: History of the Indian Navy, 1976-1990 \|publisher=Lancer Publishers \|page=375 \|isbn=81-7062-266-2}}</ref>

	==Notes==		==Notes==
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	{{Black Swan class sloop}}		{{Black Swan class sloop}}
	{{Frigates_of_the_Indian_Navy}}		{{Frigates_of_the_Indian_Navy}}
	{{DEFAULTSORT:~~Jumna~~ (U21)}}
			{{DEFAULTSORT:Jamuna (U21)}}
	[[Category:Black Swan-class sloops of the Royal Indian Navy]]		[[Category:Black Swan-class sloops of the Royal Indian Navy]]
	[[Category:1940 ships]]		[[Category:1940 ships]]

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{{Use dmy dates|date=January 2020}}
{{Use Indian English|date=January 2020}}
{|{{Infobox ship begin}}
{{Infobox ship image
|Ship image=
|Ship caption=
}}
{{Infobox ship career
|Hide header=
|Ship country= India
|Ship flag={{shipboxflag|British India|naval-1928}} {{shipboxflag|India|naval}}
|Ship name= ''Jumna''
|Ship namesake= [[Yamuna River]]
|Ship ordered= 8 September 1939
|Ship builder= [[William Denny and Brothers]]
|Ship yard number=
|Ship laid down= 20 February 1940
|Ship launched= 16 November 1940
|Ship acquired=
|Ship commissioned= 13 May 1941
|Ship decommissioned=31 December 1980
|Ship in service=
|Ship out of service=
|Ship struck=
|Ship reinstated=
|Ship honours=
|Ship fate=Broken up
|Ship status=
|Ship notes=
|Ship badge=
}}
{{Infobox ship characteristics
|Hide header=
|Header caption=
|Ship class={{sclass-|Black Swan|sloop|0}} [[sloop-of-war|sloop]]
|Ship displacement=*1,250 tons original
*1,350 tons modified
|Ship length= {{Convert|299|ft|6|in|m|abbr=on}}
|Ship beam=*{{Convert|37|ft|6|in|m|abbr=on}} original
*{{Convert|38|ft|6|in|m|abbr=on}} modified
|Ship height=
|Ship draught= {{Convert|11|ft|m|abbr=on}}
|Ship power=
|Ship propulsion=*Geared turbines, 2 shafts:
*{{convert|3,600|hp|abbr=on}} (original)
*{{convert|4,300|hp|abbr=on}} (3.21 MW) (modified)
|Ship speed=*{{Convert|19|kn|km/h|0}} (original)
*{{Convert|20|kn|km/h|0}} (modified)
|Ship range= {{Convert|7500|nmi|km|abbr=on}} at {{Convert|12|kn|km/h|abbr=on}}
|Ship endurance=
|Ship boats=
|Ship complement=*180 (original)
*192 (modified)
|Ship sensors=
|Ship EW=
|Ship armament=*6 × [[QF 4 inch Mk XVI naval gun|QF {{Convert|4|in|mm|0|abbr=on}} Mk XVI]] AA guns (3 × 2)
*4 × [[QF 2-pounder naval gun|2-pounder AA pom-pom]]
*4 × [[Vickers .50 machine gun|{{Convert|0.5|in|mm|1|adj=on}} AA machine guns]] (original)
*12 × [[Oerlikon 20 mm cannon|20 mm Oerlikon]] AA (6 × 2) (modified)
|Ship armour=
|Ship notes=
}}
|}

'''HMIS ''Jumna'' (U21)''' was a {{sclass-|Black Swan|sloop|0}} [[Sloop-of-war|sloop]], which served in the [[Royal Indian Navy]] (RIN) during [[World War II]].

After India became a republic on 26 January 1950, the vessel was renamed as the [[Indian Navy]]'s '''INS ''Jamuna'''''.

==History==
HMIS ''Jumna'' was ordered in 1939, and built by [[William Denny and Brothers]]. She was [[Ship commissioning|commissioned]] in 1941,<ref name=ub>{{cite web |url=http://www.uboat.net/allies/warships/ship/3915.html |title=HMIS Jumna (U 21) |website=uboat.net |access-date=6 April 2016}}</ref> and with [[World War II]] underway, was immediately deployed as a convoy escort. ''Jumna'' served as an anti-aircraft escort during the [[Dutch East Indies campaign|Java Sea campaign]] in early 1942, and was involved in intensive anti-aircraft action against attacking Japanese twin-engined level bombers and dive bombers, claiming five aircraft downed from 24–28 February 1942:<br>
''"Chief Ordnance Artificer, Peter Cajetan Mascarenhas was awarded the Distinguished Service Medal for his part in defending the convoy against the Japanese aircraft which attacked it in the Sunda Strait. The citation in the London Gazette said that he had carried out repairs to guns during dive-bombing and machine-gun attacks, and had shown great devotion to duty. Leading Seaman Khan Mohammed, who displayed skill and initiative in engaging the Japanese with an Oerlikon gun was also awarded the Distinguished Service Medal. The Gunnery Officer, Lieut. A.J.V. LeCocq, R.I.N.V.R., was decorated with the Distinguished Service Cross and six of the Jumna's ratings were mentioned in Despatches, having shown "devotion to duty during heavy and continuous dive-bombing attacks".''<ref>Collins, p.100 - 102</ref>

On 12 February 1944, The [[Japanese submarine Ro-110]] was depth charged and sunk east-south-east off Visakhapatnam, India by the Indian sloop ''Jumna'' and the Australian minesweepers {{HMAS|Launceston|J179|6}} and {{HMAS|Ipswich|J186|6}}. ''Ro-110'' had attacked convoy JC 36 (Colombo-Calcutta) and torpedoed and damaged the British merchant ''Asphalion'' (6274 GRT).<ref>{{cite web |title=IJN Submarine RO-110 |url=http://www.combinedfleet.com/RO-110.htm |website=Combined fleet |access-date=6 May 2021}}</ref>

In early January 1945, she was deployed with {{ship|HMIS|Narbada|U40|6}} to support the landing of the 74th Indian Brigade of the [[British Indian Army]] on the [[Akyab]] Peninsula, as a part of [[Operation Lightning (Burma)|Operation Lightning]]. ''Jumna'' and ''Narbada'' engaged Japanese batteries up the [[Kaladan River]] near [[Ponnagyun]]. After embarking troops, she joined Task Force 64 headed by {{HMS|Phoebe|43|6}} for support of landing by 3rd British Commando Brigade between Akyab and Ramree with the destroyer {{HMAS|Napier|G97|6}} and HMIS ''Narbada''.

Following Indian independence, she was allotted to India, becoming '''INS''' ''Jamuna'' in 1950 when India became a republic. She was later converted to a survey vessel and was decommissioned on 31 December 1980.<ref>{{cite book |last=Hiranandani |first=Gulab Mohanlal |date=2005 |title=Transition to Eminence: History of the Indian Navy, 1976-1990 |publisher=Lancer Publishers |page=375 |isbn=81-7062-266-2}}</ref>

==Notes==
{{reflist}}

==References==
* {{cite book|last=Collins |first=D.J.E. |url=http://www.ibiblio.org/hyperwar/UN/India/RIN/index.html |title=The Royal Indian Navy, 1939 - 1945 |date=1964 |publisher=Combined Inter-Services Historical Section (India & Pakistan)}}
* {{cite book|last=Hague|first=Arnold|title=Sloops: A History of the 71 Sloops Built in Britain and Australia for the British, Australian and Indian Navies 1926–1946|year=1993|publisher=World Ship Society|location=Kendal, England|isbn=0-905617-67-3}}

{{Black Swan class sloop}}
{{Frigates_of_the_Indian_Navy}}
{{DEFAULTSORT:Jumna (U21)}}
[[Category:Black Swan-class sloops of the Royal Indian Navy]]
[[Category:1940 ships]]