The Prydwen

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The Prydwen is a location in the Commonwealth $$ The flagship of the Brotherhood of Steel, the Prydwen serves multiple roles for the Brotherhood, including those of aircraft carrier, command center, clinic, personnel quarters, equipment maintenance bay and research facility. It will be moored to the air traffic control tower at Boston Airport shortly after the Sole Survivor exits Fort Hagen during the quest Reunions.

Background
The Prydwen is the most advanced airship owned by the Brotherhood. The airship was constructed by the Brotherhood of Steel at Adams Air Force Base. Two years alone were spent on designing it by the sharpest minds the Brotherhood had at its disposal. Another two years were spent gathering the parts necessary to enable its construction, with components salvaged from the destroyed Enclave base playing a crucial role in its construction. The Prydwen was launched and granted the Brotherhood the ability to mobilize its entire division and field it anywhere they need to at a moment's notice.

Weighing 40,000 tons, the Prydwen can land on the ground in emergencies and to conserve coolant needed to keep it afloat. The airship itself is unarmed, but it always carries enough troops, Vertibirds and supplies to mount a major offensive. The Brotherhood's airborne aircraft carrier contains all of the facilities needed to make long range operations possible: Barracks, research and development facilities, a medical bay, armory, workshops, and more.

During the conflict in the Commonwealth, the carrier also houses Arthur Maxon and the top leadership of the chapter. Lancer-Captain Kells, the head of the Lancers and Prydwen's skipper, resides at the command deck on the bridge, overseeing field operations. Proctor Teagan, head of the Order of the Sword, acts as Prydwen's quartermaster. His office is in the supply depot in the rear. The head of the airport supply depot, Knight Sergeant Gavil, answers directly to him. Proctor Ingram, head of the Order of the Shield, works in the power armor maintenance bay. She oversees engineering and maintenance duties both aboard the Prydwen and airport-side. It's her job to ensure the reactor remains operational and the ship airborne. She also works towards restoring Liberty Prime, the keystone of Elder Maxson's stratagem against the Institute. Proctor Quinlan, head of the Order of the Quill, oversees Scribe research and recovery operations from his quarters on the main deck, opposite the infirmary. Field Scribes answer to him and he's personally checking every technical document brought in from the field by them or other Brotherhood operatives.

Apart from the three Order leaders, the chapter has other prominent members aboard the Prydwen. Knight-Captain Cade, one of the Brotherhood's most talented physicians, resides in the medical bay, treating wounded soldiers and assessing new recruits in order to see if they are combat ready. He is notoriously strict and refuses to clear Paladin Brandis for duty until the Sole Survivor completes either The Nuclear Option for the Brotherhood or completes Mass Fusion for the Institute while working for the Railroad.

Senior Scribe Neriah, is the head of the Brotherhood's biological research department, and works in her lab at the rear of the upper floor of the main deck. She is responsible for the dissecting and analysis of fallen foes in the hopes of finding any weaknesses and special traits useful to the Brotherhood. She also works to develop a new anti-radiation medicine more potent than Rad-X, but she needs more viable blood samples from the Commonwealth's various creatures to create it.

Layout
The Prydwen is divided into two exterior areas and two indoor areas: the flight deck, the command deck, the main deck, and the forecastle. On the main deck is a medical bay, mess hall, power armor station, crafting equipment, and a shop at the end of the corridor. There are also stairs that lead either up to the living quarters or down to a storage area. Around the perimeter and along the top are patrolled catwalks. The main deck is contained within the airbag, as the hydrogen is inside several canisters positioned around the outer hull.

The flight deck is located along the midsection of the gondola. There is a control room/storage area overlooking the deck, accessible at the back of the flight deck. The command deck has three levels. The top level is Maxson's observation deck. The next one down is a storage area, with access to the forecastle. Finally, the bridge is at the bottom, where Lancer-Captain Kells can be found. The forecastle is a small balcony that is accessible from the top of the command deck.

Inhabitants
The Prydwen's crew includes:

Optional crew members:
 * Predictive Analytic Machine, if reprogrammed in the mission Tactical Thinking.
 * Paladin Brandis, if convinced to rejoin the Brotherhood.
 * Madison Li, if convinced to join during From Within.
 * Professor Scara, if convinced to join during Liberty Reprimed.

Loot

 * BoS II T-60b power armor - Shadow of Steel quest reward.
 * Long range laser rifle - Found on the Prydwen's forecastle in a crate called sharpshooter stowage. The forecastle entrance is located through the main deck's southern top floor.
 * Three mini nukes can be found on the lower catwalk of the main deck, next to the mini nuke crates that are recovered from the Fort Strong armory during the quest Show No Mercy. Two are on top of the crates and the third is on the floor next to the northwestern crate.
 * X-01 power armor Mk1 helmet, Gauss rifle, Fat Man with two mini nukes, and a fusion core.
 * A large amount of ammo can be stolen from in Proctor Teagan's cage behind a Master lock.
 * Knight-Captain Cade's report - Holotape, in Cade's medical office, next to a terminal.
 * C.I.T. recon report - Holotape, left of the helm on the command deck, on top of one of the southern computer gauges.
 * Personal log - 142 - Holotape, on a nightstand on the east side opposite of the outgoing mail terminal.
 * Quinlan to be deleted - Holotape, on top of a file cabinet in Quinlan's office.
 * Maxson was right - Holotape, located on a nightstand between two beds above the entrance to get to the command deck.
 * Your new assignment - Holotape, on top of a barrel next to a bed, above the entrance to the main deck.
 * Nuka-Cola Quantum - On the main deck, lower catwalk.
 * Lucia's personal key - In Clarke's footlocker.
 * From Lucia - In Clarke's footlocker near his bed.
 * Knight Lucia's log - In Lucia's personal footlocker.
 * Commando armor, Honor, Death from Above, Vengeance and Sentinel's Plasmacaster - All sold by Teagan. Honor and Death from Above become available after becoming a paladin, while Vengeance and Sentinel's Plasmacaster become available after becoming a sentinel.
 * Steadfast BOS combat armor chest piece - Reward for completing the quest The Lost Patrol if it is turned in to Kells instead of Danse.
 * Exemplar's T-60c torso - Reward from Kells for completing the quest Duty or Dishonor by persuading Clarke to turn himself in.
 * Visionary's T-60c helmet - Reward from Kells for completing the quest A Loose End.

Pickpocket or dropped on death

 * Eight complete BOS II T-60 Power Armor suits can be stolen - three from the patrolling sentries, three stationary sentries (main deck, flight deck, command deck) and another two from the power armor bay. (Note: The sentries will continue their patrols/manning their posts, but if they are killed, they will eventually respawn with new sets of armor.)
 * Prydwen armory key - On a Brotherhood knight-captain, near a small diner, the southern part of the ship.
 * Airship Captain's Hat and Brotherhood officer fatigues - Pickpocketed from Knight-Captain Kells.
 * Brotherhood medic fatigues - Worn by Knight-Captain Cade.
 * Bomber jacket
 * Engineer's armor
 * Final Judgment - Unique Gatling laser, carried by Elder Maxson who also wears Maxson's battlecoat.
 * Medical goggles
 * Quinlan's Armor - Pickpocketed from Quinlan.
 * Science scribe's armor
 * Teagan's armor - Pickpocketed from Teagan.
 * Welding helmet

Related quests

 * Shadow of Steel
 * Airship Down
 * Rockets' Red Glare
 * With Our Powers Combined

Behind the scenes

 * The Prydwen shares its name with a ship from the early Welsh poem Preiddeu Annwfn, serving as the ship of King Arthur.
 * It is pronounced by multiple characters in different ways. Military Frequency AF95 broadcasts pronounce it "preed-win" whereas Paladin Danse pronounces it "prid-win;" the Welsh pronunciation is "prid-when."
 * The vehicle is mentioned in the Art of Fallout 4.

Bugs

 * Stealing from the Prydwen armory can result in all Brotherhood NPCs turning hostile against the Sole Survivor. This can happen regardless of whether the Survivor is detected or not and can happen even if a Stealth Boy is used. Solutions include picking up the desired item and moving it outside the armory before stealing it. This does not alert the Brotherhood.
 * This only happens if a very significant amount of loot is stolen.
 * Killing the Brotherhood lancer-sergeant on the northern Vertibird gantry may result, after a save and reload, in an invisible corpse with an un-targetable version of the NPC standing over it. The invisible corpse may be looted, and may even be moved, but will revert to its original position on reload. No known fix, but ultimately harmless. This bug has also been seen on the scribes along the flight deck.
 * Following the completion of the quest Airship Down, the Prydwen will still appear as a fast travel destination in the Pip-Boy. Attempting to fast travel to the Prydwen will yield the message "Fast Travel is currently unavailable from this location" regardless of where attempted.
 * After killing Kellogg in the quest Reunions, the Prydwen may not be seen in the sky and Military frequency AF95 may not play. This can be fixed using the console command This will teleport you to the roof of the Cambridge Police Station and tell you to board the vertibird.