Yangtze

The Yangtze-31 (simply marked Yangtze in the game) is a submerged, barely functional Chinese submarine found in Fallout 4. When first discovered by the Sole Survivor in 2287, it is lodged in the shallow waters of Boston Harbor south of Boston Airport and northeast of the Four Leaf fishpacking plant.
The submarine is not marked on the map until the Sole Survivor swims out to it. Upon discovery, the quest Here There Be Monsters will automatically be started if it hasn't been received already from Donny Kowalski near the Shamrock Taphouse.
==Background==
Yangtze-31 (Chinese: 揚子-三十一) is a Yangtze-class stealth submarineJosh Jay on ArtStation: "The Chinese stealth submarine in Boston Harbor that launched nuclear missiles against the mainland in Fallout 4." (referred to as Liao-class Type 113 in the game guide) of the Chinese People's Liberation Army Navy. It is a nuclear-powered ballistic missile submarine commanded by Captain Zao. Shortly before the Great War, the Yangtze was on deployment with a payload of six warheads, and an unknown number of tactical nuclear missiles and torpedoes. When the Great War began, the Yangtze's captain obeyed his orders to fire the submarine's strategic nuclear weapons at their targets. All but one of the missiles were successfully launched.The Sole Survivor: "Where are you going to get that?"Zao: " "(Zao's dialogue)
Shortly after firing its strategic missiles, the Yangtze-31 struck a mine that severely damaged her reactor and forced her to seek shelter in Boston Harbor. The damage caused a reactor leak that immobilized the sub and ultimately killed or ghoulified the crew of approximately two dozen men, of which only Zao retained his sanity.The Sole Survivor: "Have you been here for 200 years?"Zao: " "(Zao's dialogue)Fallout 4 Vault Dweller's Survival Guide Collector's Edition p. 507: "[17.04] YANGTZEEasily mistaken for a strange aquatic monster, this Chinese nuclear submarine (Liao-Class Type 113) is hidden among the wrecks of other ships in the Boston Harbor. It is commanded by Captain Zao. Should you wish to access the terminal (Master) on the lower level, find the first mate’s password from the fellow lurking down in these parts."(Fallout 4 Vault Dweller's Survival Guide Map)
==Layout==
Unlike the only other Chinese submarine the player character can personally encounter in the series, SSN-37-1A, the Yangtze is a full-scale combat vessel with extensive crew amenities and visible missile and torpedo tubes.
The Yangtze has three large propellers, one on each side and a third under the reactor control room, as well as a smaller propeller at the rear of the submarine with the rudder. Upon entering the ship, the first room the Sole Survivor comes to is the bridge, where Zao is located. Down the stairs is the reactor control room, with a small radio room on the left side ahead. 
North of the reactor room on the upper level is a small room that contains two decontamination showers and an Expert terminal-locked door with a stairway to the lower level. There is also a small science lab with a chemistry station. North of the crew quarters are two doorways that lead to a single stairway down into a room with a workshop containing a weapons workbench. The next room to the south is a small room before the reactor room, which contains a terminal-locked door to the stairway to the upper level.
==Notable loot==
* Submariner uniform and submariner hat - Worn by Captain Zao.
* Zao's sword - Possible reward for completing the quest. Only obtainable if all Speech checks are passed when first requesting a larger reward near the start of the quest.
* Chinese officer sword - In the captain's quarters, on a desk.
* Two fusion cores - One is in a box underwater on the east side of the lowest level of the engine room, just past a skeleton lying on a barrel. The other is inside an open footlocker in the crew quarters, near the Nuka-Cola Quantum.
* Vault-Tec lunchbox - In the galley, on the table in the southeast corner.
* Nuka-Cola Quantum and (closeby) Nuka-Cherry - In the crew quarters, next to the bunk of the dead crew member holding a Nuka-Cola truck.
* Stealth Boy - In the armory, inside the Master terminal-locked cage.
* Submariner hat - In the silo room, worn by the first mate, now a glowing one.
* First mate's password - In the silo room, on the first mate.
* Warhead - In the silo room, in the capsule on the west wall.
* Hazmat suit - In the silo room, in a locker to the southeast. The door to the locker must first be manually opened to reveal the suit and other minor loot.
==Related quests==
* Here There Be Monsters - Living on the ocean shorefront is a boy named Donny Kowalski, who asks the Sole Survivor to help him determine what he has been seeing out in the water recently.
==Notes==
* Approximately 30 former crew members can be found, both alive and dead, throughout the submarine. Some are skeletons strewn throughout the ship, and some have been transformed into feral ghouls.
* In the infirmary, the skeleton of an American serviceman is found on a bunk with handcuffs, with a bone cutter and a surgical scalpel on a table nearby.
* The doors inside the submarine are called "bulkheads."
* The Yangtze can be destroyed during the quest Here There Be Monsters when the Sole Survivor is tasked to replace the dampening coil and put a warhead in the reactor. However, the explosion will kill the Sole Survivor and Zao, even if they manage to leave the submarine before the explosion.
** Even if the dampening coil and warhead are installed in the correct order, doing so before speaking with Zao will still cause the explosion because the reactor wasn't prepared first.
* After completing the quest Here There Be Monsters, Travis reports that people have seen a submarine going out to sea. However, the Yangtze still doesn't actually move from its original position.
* After completing the quest Here There Be Monsters, items can be safely stored in the ship.
* The periscope/sensor mast of the Yangtze (confused for the eye of a monster by Donny Kowalski) is raised at times.
* After using console command to reveal all locations on the map, the Yangtze location is not revealed.
===Companion comments===
* When at this location, companions make comments, which are activated at three locations: the bridge, the engine room, and after placing the warhead in the reactor.
Location comments	Location comments 	Location comments
Character 	Specific location 	Comment
Cait 	Bridge 	""
Cait 	Engine room 	""
Cait 	After placing warhead	""
Codsworth 	Bridge 	""
Codsworth 	Engine room 	""
Codsworth 	After placing warhead	""
Curie 	Bridge 	"The submarine, it is still working. Somewhat."
Curie 	Engine room 	"I am no engineer, but the engines could be fixed, I think."
Curie 	After placing warhead	"Ah, look. It is working."
Danse 	Bridge 	""
Danse 	Engine room 	""
Danse 	After placing warhead	""
Deacon 	Bridge 	"I can't believe it's still working."
Deacon 	Engine room 	"God, you Pre War types could do some amazing things."
Deacon 	After placing warhead	"Woah. Hey, it's working. Damn."
Hancock 	Bridge 	""
Hancock 	Engine room 	""
Hancock 	After placing warhead	""
MacCready 	Bridge 	""
MacCready 	Engine room 	""
MacCready 	After placing warhead	""
Nick Valentine 	Bridge 	""
Nick Valentine 	Engine room 	""
Nick Valentine 	After placing warhead	""
Piper 	Bridge 	" "
Piper 	Engine room 	""
Piper 	After placing warhead	""
Preston Garvey 	Bridge 	""
Preston Garvey 	Engine room 	""
Preston Garvey 	After placing warhead	""
X6-88 	Bridge 	""
X6-88 	Engine room 	""
X6-88 	After placing warhead	""
==Behind the scenes==
* The Yangtze-class is an unique, retrofuturistic shape not similar to any real-world submarine, unlike the SSN-37-1A, which bears a very conventional (albeit small) design. Its shape would give it a very conspicuous sonar profile. 
* While the Yangtze is tied to a single mission, Here There Be Monsters, the original design would see it take to the sea and crash into Vault 120 during 20 Leagues Under the Sea. Zao, its captain, would play a major role in the quest. Nothing remains of the quest, save for the cells in Fallout 76 files and a single marker in Fallout 4.
* While Yangtze is a Chinese submarine and manned by a Chinese crew, her interior bears no Chinese characters (漢字, Hanzi). Warning signs are written in English, and the onboard terminals all use the RobCo Industries Unified Operating System. Furthermore, all other items present aboard seem to be of American origin, similar to the FMS Northern Star which is of Norwegian origin. Yangtzes design as also very similar to that of the American submarine USS Democracy from Far Harbor, albeit larger.
* On page 507 in the Fallout 4 Vault Dweller's Survival Guide the class of the submarine is described as "Liao-Class Type 113" when it is actually a Yangtze-class.Yangtze-31 terminal entries; reactor terminal However, in the real world, all People's Liberation Army Navy Submarine Force nuclear submarines are named Changzheng (Long March), followed by a serial number, i.e. "Changzheng-31." PLANSF submarines use types rather than classes, i.e. "Type-113." However, NATO assigns reporting names, also known as classes, to PLANSF submarines. These classes are based on Chinese dynasties, i.e. "Liao-class."
* The Yangtze is the longest river in both Asia and China. However, in real life, the term Yangtze（揚子) is relatively unused in modern Chinese, apart from the river. Chinese speakers would likely use the much more popular term Changjiang（長江), while westerners use Yangtze. In addition, Yangtze would also have been spelled Yangzi in modern pinyin, since Yangtze is the romanized spelling.
==Appearances==
The Yangtze appears only in Fallout 4.
==Gallery==
FO4 Yangtze-31 Exterior 01.png|The sea monster's eye
Zao.jpg|Captain Zao of the Yangtze
FO4 Yangtze-31 Interior 02.png
FO4 Yangtze-31 Interior 03.png
FO4 Yangtze-31 Interior 04.png
FO4 Yangtze-31 Interior 05.png
FO4 Yangtze-31 Interior 06.png
FO4 Yangtze-31 Interior 07.png
FO4 Yangtze-31 Interior 08.png
FO4 Yangtze-31 Interior 09.png
FO4 Yangtze-31 Interior 10.png
FO4 Yangtze-31 Interior 11.png
FO4 Yangtze-31 Interior 12.png
FO4 Yangtze-31 Interior 13.png
FO4 Yangtze-31 Interior 14.png
FO4 Yangtze-31 Interior 15.png
FO4 Yangtze-31 Interior 16.png
FO4 Yangtze-31 Interior 18.png
FO4 Yangtze-31 Interior 19.png
FO4 - Yangtze dining area.jpg
Yangtze interior.jpg
Yangtze interior1.jpg
Yangtze interior2.jpg
FO4 Yangtze-31 Interior 20.png
FO4 Yangtze-31 Interior 21.png
Fo4 fusion core Yangtze1.jpg|Fusion core
Fo4 fusion core Yangtze2.jpg|Fusion core
Fo4 NC Quantum Yangtze.jpg|Nuka-Cola Quantum and Nuka-Cherry
Frag mines Stealth Boy Yangtze.jpg|Stealth Boy
VT lunchbox Yangtze.jpg|Vault-Tec lunchbox
Frag grenades armory Yangtze.jpg|Fragmentation grenades
Frag grenades bed Yangtze.jpg|Fragmentation grenades
Chemistry station Yangtze.jpg|Chemistry station
Weapons workbench Yangtze.jpg|Weapons workbench
;Concept art and renders
Josh-jay-joshjayfallout4art-0040-yangtze-submarine-01.jpg|Modeling and renders by Joshua Jay (source)
Josh-jay-joshjayfallout4art-0041-yangtze-submarine-02.jpg
Josh-jay-joshjayfallout4art-0042-yangtze-submarine-03.jpg
Art of FO4 Yangtze.jpg|From the Art of Fallout 4
Yangtzemap01.png|Yangtze Map
Yangtze_Model.png|Yangtze Model
Art of FO4 Yangtze Crew.jpg|Yangtze crew concept art
FO4 Art Yangze Crew 2.jpg|Submarine ghoul
==References==
Non-game
Category:Boston Harbor
Category:People's Liberation Army vehicles
Category:Fallout 4 vehicles
es:Yangtze
fr:Yangtze
hu:Jang-ce
ru:Янцзы (Fallout 4)
uk:Янцзи
zh:長江號