Soryu-class Submarine

The ***Sōryū*-class submarines** (***16SS***) are diesel-electric attack submarines. The first boat in the class entered service with the Japan Maritime Self-Defense Force in 2009. The design is an evolution of the *Oyashio*-class submarine, from which it can most easily be distinguished by its X-shaped stern combination diving planes and rudders. The *Sōryūs* have the largest displacement of any submarine used by post-war Japan

## Overview

The Soryu-class submarines are part of the Japan Maritime Self Defense Force (JMSDF), and have proven to be a potent weapon against all surface navies and submarine forces of the New World. Due to its stealthy nature and a long-range arsenal of Harpoon Missiles and Type 89 Torpedos, the submarine easily outmatch their counterparts in the Gra Valkas Empire, the Cetus-class submarines. Additionally, the crew was also trained to "*stay silent"* as making noise can make the submarine presence detected by sonar, allowing the enemy to attack them.

## Specification

* **Type:** Attack submarine
* **Displacement:**
	+ Surfaced: 2,900 tonnes (2,854 long tons)
	+ Submerged: 4,200 t (4,134 long tons)

* **Length:** 84.0 m (275 ft 7 in)
* **Beam**: 9.1 m (29 ft 10 in)
* **Draft:** 8.5 m (27 ft 11 in)
* **Propulsion:**
	+ 1-shaft 2 × Kawasaki 12Ｖ 25/25 SB-type diesel engines diesel-electric
	+ 4 × Kawasaki Kockums V4-275R Stirling engines - up to *Shōryū*
	+ 3,900 hp (2,900 kW), surfaced
	+ 8,000 hp (6,000 kW), submerged

* **Speed:**
	+ Surfaced: 13 kn (24 km/h; 15 mph)
	+ Submerged: 20 kn (37 km/h; 23 mph)

* **Range:** AIP endurance (est.): 6100 nautical miles (11297.2 km; 7060.75 miles) at 6.5 knots (12 km/h; 7.48 mp/h)
* **Complement:** 65 (9 officers, 56 enlisted)
* **Sensors and processing systems:**
	+ ZPS-6F surface/low-level air search radar
	+ Hughes/Oki ZQQ-7 Sonar suite: 1× bow-array, 4× LF flank arrays and 1× Towed array sonar

* **Electronic warfare & decoys:**
	+ ZLR-3-6 ESM equipment
	+ 2× 3-inch underwater countermeasure launcher tubes for launching of Acoustic Device Countermeasures (ADCs)

* **Armament:**
	+ 6 × HU-606 21 in (533 mm) torpedo tubes with 30 reloads for:
		1. Type 89 torpedo
		2. Harpoon (missile)
		3. Mines

## Subs of Her Class

* SS-501 *Sōryū* (そうりゅう) Blue Dragon - Lead of her class
* SS-502 *Unryū* (うんりゅう) Cloud Dragon
* SS-503 *Hakuryū* (はくりゅう) White Dragon
* SS-504 *Kenryū* (けんりゅう) Sword Dragon
* SS-505 *Zuiryū* (ずいりゅう) Auspicious Dragon
* SS-506 *Kokuryū* (こくりゅう) Black Dragon
* SS-507*Jinryū* (じんりゅう) Benevolent Dragon
* SS-508 *Sekiryū* (せきりゅう) Red Dragon
* SS-509 *Seiryū* (せいりゅう) Pure Dragon
* SS-510 *Shōryū* (しょうりゅう) Soaring Dragon
* SS-511 *Ōryū* (おうりゅう) Phoenix Dragon
* SS-512 *Tōryū* (とうりゅう) Fighting Dragon

## Service History

### New World War

The JMSDF submarines, lead by SS-511 *Oryu* were responsible for sinking and disabling several surface ships of the 2nd Advance Fleet during the Great Naval Battle of Japan, thereby causing the 2nd Advance Fleet to go into a panic. With the exception of one Harpoon missile being hit by a lucky shot from an anti-aircraft cannon, the Japanese submarine fleet suffered no losses. After putting 2 torpedoes into the main flagship of the 2nd Advance Fleet, the fleet was ordered to move onto the next operation while a flight of F-2 Fighters launched 40 anti-ship missiles to finish off the fleet.

After the failed naval invasion of Japan, the JMSDF sent 4 submarines (Soryu-Class SS-507*Jinryū & SS-510* Shōryū'and Oyashio-Class SS-593 *Makishio &* SS-594 *Isoshio*) to harass the GVE Navy at Western Mu Continent. The subs managed to sunk 12 GVE warships, including battleship Rigel II.