View source for LR5

{{short description|Crewed submersible for submarine rescue}}
{{Use dmy dates|date=June 2017}}
{{Use British English|date=June 2017}}
 
{|{{Infobox ship begin |display title=ital}}
{{Infobox ship image
| Ship image=[[File:LR5 rescue vehicle is lowered into the water.JPEG|300px|''LR5'' rescue vehicle is lowered into the water by a crane from the Finnish icebreaker MSV ''Fennica'']]
| Ship caption=The rescue vehicle ''LR5'' being lowered into the water by a crane from the {{ship|Finnish icebreaker|Fennica}}
}}
{{Infobox ship career
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| Ship country= Australia
| Ship flag= {{shipboxflag|Australia|naval}}
| Ship name= ''LR5''
| Ship owner= Royal Navy
| Ship operator= Royal Australian Navy (leased)
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| Ship builder= Forum Energy Technologies <ref>{{cite web | url=https://f-e-t.com/subsea/vehicles/submarine-rescue-systems/ | title=Submarine Rescue Systems }}</ref>
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| Ship acquired= June 2009<ref>{{cite web |url= http://www.australiandefence.com.au/81789FF7-5056-8C22-C923F3728E15F0F8 |title=Remora replacement arrives |work=Australian Defence Magazine |date=12 June 2009 |access-date=7 July 2012}}</ref>
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| Ship status= {{Ship in active service | 2018}}
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{{Infobox ship characteristics
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| Header caption=<ref>{{cite web |url= http://www.jfdefence.com/products/dsar/tech.html |title=DSAR Class Submarine Rescue Vehicles : Tech Spec |work=James Fisher Defence |year=2012 |access-date=7 July 2012}}</ref>
| Ship class=DSAR-class [[Deep Submergence Rescue Vehicle|submarine rescue vehicle]]<ref>{{cite web | url=https://f-e-t.com/subsea/vehicles/submarine-rescue-systems/ | title=Submarine Rescue Systems }}</ref>
| Ship tonnage= {{Convert|24|t|LT|lk=on|abbr=on}} (in air weight)
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| Ship length=  {{Convert|9.6|m|ftin|abbr=on}}
| Ship beam= {{Convert|3.2|m|ftin|abbr=on}}
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| Ship depth={{Convert|2.7|m|ftin|abbr=on}}
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| Ship propulsion=2 × {{Convert|10|kW|0|abbr=on}} electric motors
| Ship speed={{Convert|3|kn|lk=in}}
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| Ship endurance= 10 hours
| Ship test depth= {{Convert|650|m|abbr=on}}
| Ship capacity={{cvt|1200|kg}} (16 persons)
| Ship crew= 2
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'''''LR5''''' is a crewed [[submersible]] which was used by the [[United Kingdom|British]] [[Royal Navy]] until 2009 when it was leased to support the [[Royal Australian Navy]]. It is designed for retrieving sailors from stranded [[submarine]]s and is capable of rescuing 16 at a time.<ref name=techno>{{cite web|url=https://www.naval-technology.com/projects/lr5/|title=LR5 Submersible Submarine Rescue Vessel |publisher=Naval-technology.com |accessdate=20 April 2021}}</ref> The Royal Navy now has the use of the [[NATO Submarine Rescue System]].

== Use ==
Only two crew members are needed for the use of ''LR5'' but in normal conditions, usually three crew members are used — the pilot, the co-pilot, and the system operator. For the operating conditions, the ''LR5'' is able to operate in seastate conditions of 5 m maximum and its safe operating depth is limited to 500 m. Eight trips can be done with the ''LR5'' before battery recharge is needed, which makes the ''LR5'' able to save 120 sailors on one full charge of eight trips. The ''LR5'' is fitted with an integrated navigation and tracking outfit. This system, developed by Kongsberg Simrad, integrates the surface and subsea navigation data.<ref name=techno />

== History ==
The ''LR5'' was used by the [[Royal Navy]] from 1978 to 2009. Originally Manufactured by Vickers Slingsby, which became Slingsby Engineering, then Perry Slingsby Systems and is now Forum Energy Technologies (FET).

In the late 1990s and early 2000s, the British Defense Ministry contracted with [[Global Crossing]], a company with a [[Submarine cable|marine underwater cable]] business, to maintain and operate the ''LR5''. Global Crossing used the submersible in their cable business and was also required to keep it ready to respond to emergencies.<ref name=":0">{{cite news |last=Douglass |first=Elizabeth |date=August 19, 2000 |title=Rescue Mission Steers Craft Operator Into Uncharted Waters |work=[[Los Angeles Times]] |url=https://www.latimes.com/archives/la-xpm-2000-aug-19-mn-7116-story.html |url-access=subscription}}</ref>

Britain activated this agreement to help in the unsuccessful rescue of the crew of the Russian nuclear submarine {{ship|Russian submarine|Kursk|K-141|2}}. Global Crossing flew the ''LR5'', and support vessels and crew, to the rescue site.<ref name=":0"/>

Since June 2009, it has been used by the [[Royal Australian Navy]].{{cn|date=June 2023}}

==See also==
*{{annotated link|Scorpio ROV}} 
*{{annotated link|Deep-submergence rescue vehicle}}
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==References==
{{Reflist}}

==External links==
{{Commons category-inline|LR5 (submarine, 1978)}}
*[http://www.janes.com/defence/naval_forces/news/jut/jut000816_1_n.shtml Specifications at Jane's Naval Forces]
*[https://www.naval-technology.com/projects/lr5/ Specifications at Naval Technology]

{{Australian submarines}}
{{UK submarine classes after 1945}}
{{Underwater diving|other}}{{DEFAULTSORT:Lr5}}
[[Category:Deep-submergence rescue vehicles]]
[[Category:Submarines of the Royal Navy]]
[[Category:Submarines of the Royal Australian Navy]]
[[Category:Submarines of Australia]]
[[Category:Lifeboats]]
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