Yakushi-class submarine

RDNS Akanagi near CNB Tervik
Class overview
Name:	Yakushi class
Builders:	Mitsuna Heavy Industries
Operators:	Dayashina
Cost:	$2 billion
Built:	1980–2008
In commission:	1985–
Planned:	4
Building:	0
Completed:	4
Active:	4
General characteristics
Type:	Guided missile submarine
Displacement:	16,764 tonnes surfaced 18,750 tonnes submerged
Length:	170 m (557 ft 9 in)
Beam:	13 m (42 ft 8 in)
Propulsion:	1x S8M PWR nuclear reactor 2x geared turbines 1 × 325 hp (242 kW) auxiliary motor 1 × shaft @ 60,000 shp (45,000 kW)
Speed:	25 knots (46 km/h)
Range:	unlimited
Endurance:	approximately 60 days with food supplies
Complement:	155
Sensors and processing systems:	BQQ-6 Bow mounted sonar BQR-19 Navigation BQS-13 Active sonar TB-16 towed array
Armament:	4 × 21 inch (533 mm) bow torpedo tubes. 22x tubes each with 7x BGM-109 or GAIA Mosquito or unmanned vehicles

The Yakushi-class is a class of nuclear powered guided missile submarines (SSGN) in service with the Republic of Dayashina Navy. They are among the largest and most heavily armed submarines in the world, carrying up to 154 cruise missiles at maximum capacity. As the primary arm of strategic deterrence for Dayashina, their missiles can be rapidly relayed targets by Dayashinese Strategic Command via constant, low frequency radio communications links. The four submarines in the Yakushi-class are split between two bases, RDN Kimitsu in Nakazara, Dayashina, and CNB Tervik in Tervik, Hallia. RDNS Yakushi and Midori are headquartered in RDN Kimitsu and are the basis for Dayashinese strategic deterrence in the eastern hemisphere, while RDNS Akanagi and Hachimantai are headquarted in CNB Tervik, forming the basis for Dayashinese strategic deterrence in the western hemisphere.