Yangtze

The Yangtze (Chinese: 扬子; pinyin: Yangzi, or possibly Changjiang given that Yangtze is a Westernization of China's longest river (Chinese: 长江; pinyin: Changjiang), is a captured American nuclear-powered ballistic missile submarine lodged in the shallow waters off the coast of The Commonwealth south of Boston Airport, north east of the Four Leaf fishpacking plant. It will not be discovered until the quest Here There Be Monsters has been started.

Background
Sometime before the Great War, the Yangtze was sent on patrol into the Atlantic with a payload of six strategic nuclear ICBMs and an uncertain number of tactical nuclear missiles and torpedoes. It is unknown if the vessel experienced any combat prior to the Great War, but given that by the 2280s it only has three tactical missiles left this is possible. 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.

Shortly after firing its strategic missiles, the Yangtze struck a mine that severely damaged its reactor and forced it to seek shelter in a nearby harbor, which just so happened to be the port of Boston. The damage caused a reactor leak that immobilized the sub and ultimately killed or ghoulified the crew, of which only Captain Zao retained his sanity.

Layout
Unlike the only other Chinese submarine encountered in the series, SSN-37-1A, the Yangtze is in fact an American vessel captured shortly after the bombs dropped by Zao and his Chinese commandos. The outside may have been repainted, slight alterations may have been made, but the ships core internals are all American. Robco terminals run throughout the vessel and General Atomics built its reactor as evidenced by the fact that GA power plants are needed to be salvaged to repair it. It is shaped similarly to the German U-boats of the world wars, instead of the teardrop shape of real world subs.

Notable loot

 * Submariner uniform & Submariner hat - Worn by Captain Zao.
 * Fusion core - Inside an open footlocker in the crew quarters.
 * Nuka Cola Quantum (Fallout 4) - Next to the bunk of dead crew member holding a Nuka-Cola truck, in the crew quarters.
 * Chinese officer sword - Laying on a desk underneath the bridge.
 * Submariner hat - Worn by The First Mate, now a glowing one (room has higher radiation levels).
 * Warhead (Fallout 4) - Found in the same room as The First Mate, by looting the capsule on a nearby wall.
 * Stealth Boy - Locked in a supply closet controlled by a terminal (Master).
 * Vault-Tec lunchbox - In the galley on the table in the southeast corner.
 * Various Aid Items also locked in a supply closet controlled by a terminal (Advanced).

Related quests

 * Here There Be Monsters

Appearances
The Yangtze only appears in Fallout 4.

Yangtze Янцзы (Fallout 4)