# FCS-3

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Naval weapons system developed by the Japanese Defense Ministry

FCS-3A on board JS *Akizuki*

**FCS-3** is an integrated naval weapons system developed by the [Japanese Defense Ministry](/source/Ministry_of_Defense_(Japan)) for the [Japan Maritime Self-Defense Force](/source/Japan_Maritime_Self-Defense_Force).

This system is composed of [weapon-direction and fire-control subsystem](/source/Fire-control_system) and a multi-function radar subsystem. The multi-function radar subsystem adopted [active electronically scanned array](/source/Active_electronically_scanned_array) (AESA) technology, and there are two sets of antennas: the larger one is a [C-band](/source/C_band_(IEEE)) radar for surveillance and tracking, the smaller one is an [X-band](/source/X-band) radar as a [fire-control radar](/source/Fire-control_radar).[1]

After a prolonged sea trial on board JS *Asuka*, this system was introduced in 2007 on the [JS *Hyūga* (DDH-181)](/source/JS_Hy%C5%ABga). The enhanced version, FCS-3A, was employed on the [*Akizuki*-class destroyers](/source/Akizuki-class_destroyer_(2010)).,[2] and limited-function version, OPS-50, was also delivered for the [*Izumo*-class](/source/Izumo-class_helicopter_destroyer) [helicopter destroyers](/source/Helicopter_destroyer). The fire-control function are omitted in the OPS-50 system, so they have only one set of antennas operating C-band.[3]

The [Asahi-class destroyer](/source/Asahi-class_destroyer) features an FCS-3A radar that uses [Gallium nitride](/source/Gallium_nitride) technology to improve its performance.[4]

## References

1. **[^](#cite_ref-Yamazaki2010_1-0)** Makoto Yamazaki (October 2011). "Combat systems of modern Japanese destroyers". *Ships of the World* (748). Kaijin-sha: 98–107.

1. **[^](#cite_ref-2)** [19DD Akizuki Class Destroyers, Japan](https://www.naval-technology.com/projects/19ddakizukiclassdest/)

1. **[^](#cite_ref-3)** [Izumo-Class Helicopter Carrier DDH-183](https://web.archive.org/web/20140226234240/http://www.navyrecognition.com/index.php/component/content/article/153-jmsdf-japanese-navy-aircraft-carriers/1182-22ddh-izumo-class-helicopter-destroyer-carrier-ddh-183-184-jmsdf-japan-datasheet-pictures-photos-video-specifications.html)

1. **[^](#cite_ref-4)** ["First JMSDF 25DD-class Asahi ASW Destroyer Started Sea Trials"](https://www.armyrecognition.com/archives/archives-naval-defense/naval-defense-2017/first-jmsdf-25dd-class-asahi-asw-destroyer-started-sea-trials). *Navy Recognition*. 27 July 2017. Retrieved 8 January 2019.

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Adapted from the Wikipedia article [FCS-3](https://en.wikipedia.org/wiki/FCS-3) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/FCS-3?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.