# JS Chiyoda (1983)

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{{other ships|Japanese ship Chiyoda}}
{{Infobox ship <!-- warships except submarines -->
| infobox_caption = <!-- keywords: yes, nodab; or caption text -->
| display_title = <!-- keywords: none, ital; or article title with markup -->
|section1={{Infobox ship/image
 | image = JS Chiyoda(AS-405) at KHI Kobe Shipyard July 25, 2015 a.JPG
 | image_caption = JS ''Chiyoda'' at [Kobe](/source/Kobe) on 25 July 2015
 }}

|section2={{Infobox ship/career
 | hide_header = 
 | country = Japan
 | flag = {{shipboxflag|Japan|naval}}
 | name = *''Chiyoda''
          *(ちよだ)
 | owner = 
 | namesake = 
 | ordered = 
 | builder = Mitsui, Tamado
 | laid_down = January 19, 1983
 | launched = December 7, 1983
 | acquired = 
 | commissioned = March 27, 1985
 | decommissioned = March 20, 2018
 | in_service = 
 | out_of_service = 
 | struck = 
 | reinstated = 
 | honours = 
 | honors = 
 | fate = 
 | status = 
 | notes = 
 }}

|section3={{Infobox ship/class overview
 | class_after = [''Chihaya'' class (1998)](/source/JS_Chihaya)
 | class_before = [''Fushimi'' class](/source/JDS_Fushimi)
 }}

|section4={{Infobox ship/characteristics
 | hide_header = 
 | header_caption = <ref name="jfs02 p395">{{Harvnb|Saunders|2002|p=395}}</ref>
 | class = 
 | displacement = {{convert|3650|LT|t|abbr=on}} standard
{{convert|4450|LT|t|abbr=on}} full load
 | length = {{convert|113|m|ft|1|abbr=on}}
 | beam = {{convert|17.6|m|ft|1|abbr=on}}
 | draught = 
 | draft = {{convert|4.6|m|ft|1|abbr=on}}
 | propulsion = 2× Mitsui 8L42M diesels
{{convert|10540|hp|kW|disp=flip|abbr=on}}
2 shafts
 | speed = {{convert|17|kn|mph km/h|abbr=on}}
 | range = 
 | complement = 120
 | sensors = 
 | EW = 
 | armament = 
 | armour = 
 | armor = 
 | aircraft = 
 | aircraft_facilities = Helicopter deck
 | notes = Carried one [DSRV](/source/DSRV)
 }}
}}
'''JS ''Chiyoda'' (AS 405)''' was a [submarine rescue ship](/source/submarine_rescue_ship) of the [Japan Maritime Self-Defense Force](/source/Japan_Maritime_Self-Defense_Force).<ref name="Jane2007">{{cite book|title=Jane's Fighting Ships|url=https://books.google.com/books?id=bMkqAQAAMAAJ|year=2007|publisher=S. Low, Marston & Company|isbn=978-0-7106-2799-5|page=398}}</ref>

She was replaced by a newer ship of the same name, with a slightly different designation: [JS ''Chiyoda'' (ASR 404)](/source/JS_Chiyoda_(2016)). The new ship is similar, but improved, at: 128&nbsp;m (420&nbsp;ft) long, with a standard displacement of 5,600 tonnes (6,173 tons), and was commissioned on 20 March 2018.<ref name="ihs">{{cite news |publisher=[Jane's Information Group](/source/Jane's_Information_Group) |url=http://www.janes.com/article/78716/jmsdf-commissions-new-submarine-rescue-ship?from_rss=1 |title=JMSDF commissions new submarine rescue ship |first=Kosuke |last=Takahashi |date=March 20, 2018}}</ref>

==History==
''Chiyoda'' was built by [Mitsui Engineering & Shipbuilding](/source/Mitsui_Engineering_%26_Shipbuilding) in [Tamano](/source/Tamano).<ref name="gs">{{cite news |publisher=Global Security |title=AS Chiyoda Class |url=https://www.globalsecurity.org/military/world/japan/chiyoda-unit.htm |archive-url=https://archive.today/20180320203815/https://www.globalsecurity.org/military/world/japan/chiyoda-unit.htm |archive-date=March 20, 2018 |access-date=March 20, 2018 |url-status=live }}</ref> She was laid down on January 19, 1983, and launched later that year on December 7, 1983. The Chiyoda was a multipurpose submarine rescue and saturation-diving capable ship belonging to the Japan Maritime Self-Defense Force (JMSDF). Built in 1985, it served as the mother ship for the sole deep submergence rescue vessel (DSRV) in JMSDF.<ref name="gs"/><ref name="EastEast1991">{{cite book|author1=United States. Office of Naval Research. Liaison Office, Far East|title=Scientific information bulletin|url=https://books.google.com/books?id=PfZUAAAAMAAJ|year=1991|publisher=Dept. of the Navy, Office of the Chief of Naval Research, Far East|page=125 |quote=The Chiyoda is a multipurpose submarine rescue and saturation-diving- capable ship belonging to the Japan Maritime Self-Defense Force (JMSDF). Built in 1985, it served as the mother ship for the sole deep submergence rescue vessel (DSRV) in JMSDF.}}</ref>

The design of the JS ''Chiyoda'' served as the basis for the next vessel which was the first ASR ship. However, the submarine support functions present in the JS ''Chiyoda'' (AS 405) were no longer built into the follow-on ASR ships.

==Citations==
{{Reflist}}

==References==
*{{cite book|editor-last=Saunders|editor-first=Stephen|title=Jane's Fighting Ships 2002–2003|year=2002|publisher=Jane's Information Group|location=Coulsdon, UK}}

{{Combatant ship classes of the Japan Maritime Self-Defense Force}}

{{DEFAULTSORT:Chiyoda (1983)}}
Category:1983 ships
Category:Auxiliary ships of the Japan Maritime Self-Defense Force
Category:Ships built by Mitsui Engineering and Shipbuilding
Category:Submarine rescue ships

{{Japan-mil-ship-stub}}

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Adapted from the Wikipedia article [JS Chiyoda (1983)](https://en.wikipedia.org/wiki/JS_Chiyoda_(1983)) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/JS_Chiyoda_(1983)?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.