Here there be monsters fallout 4

There's a sea monster in the harbor! I saw its eye peek up out of the water and look around.— Donny Kowalski

Here There Be Monsters is a side quest in Fallout 4.

Quick walkthrough

Side Quest: Here There Be Monsters 
Go to the Shamrock Taphouse and talk to Donny Kowalski on the dock at the rear of the building. Alternatively, swim out to the submarine without talking to Donny. 
Investigate the Yangtze submarine. 
Talk to Captain Zao. 
Get the dampening coil from Saugus Ironworks. 
Talk to Zao. 
Collect the nuclear warhead from the unfired ICBM in the submarine. 
Talk to Zao. 
Replace the dampening coils and insert the warhead into the reactor. 
Talk to Zao. 
Rewards: 200+ XP
Three homing beacons
*4 pre-War money
*200 Caps
*Zao's sword 

Detailed walkthrough

Here There Be Monsters is a side quest triggered by speaking with Donny Kowalski, who's located on the docks behind the Shamrock Taphouse. He'll excitedly tell the Sole Survivor he has been seeing an eyestalk peeking out of the water off the docks and will remain convinced it belongs to a sea monster, regardless of how the player character may respond. Through this dialogue, the quest will begin and the Yangtze submarine will be placed on the map, located directly in front of the pier Donny is standing on. It'll take a short swim to reach and is easily visible as a periscope covered in seaweed juts out of the water and often moves up and down. Alternatively, the quest can be started by simply swimming to the Yangtze.

Once in the submarine, one can speak to Captain Zao who is located in the first main room. He questions why the Sole Survivor is there, remarking that the war is long over and tells them that he has no treasure on board to plunder. He will go on to explain how his submarine ended up as it is and express surprise that he's been there for over 200 years already.

He will then share that his ship is no longer seaworthy and will ask for help fixing it. Once the player character agrees to help, he advises that a dampening coil has been damaged and that he needs a new one, of which his wartime intelligence told him could be found in Saugus Ironworks. At this point, he can be pushed into three different rewards with speech checks of increasing difficulty. He'll start by offering pre-War money, stating it must still have some value. He will offer caps if pushed further and if the final speech check is passed, he will reluctantly offer his sword as a final reward. If Out of the Fire has already been completed, the dampening coil may already be in the player character's possession. If so, there will be a speech option to hand it over.

Traveling to Saugus Ironworks, located directly south of the Slog, reveals several enemies known as the Forged who populate and defend the inside and outside of the building. They wield flamers and will use Molotov cocktails. If this location has already been explored and cleared out before, additional enemies may not be present.

The dampening coil is located within the blast furnace, inside of the building. To reach this room, one must traverse the ground floor to the upper-most floor, cross the middle of the room to the other half of the building, and then climb back down again. The blast furnace is found near the front of the second half of the building right in front of the door leading to the roof of the complex.

The blast furnace is inhabited by Slag, the leader of the Forged, and entering the room will initiate dialogue with him. It may be possible to retrieve the dampening coil without killing him and the others inside, but they will attack the player character at the end of the dialogue regardless. Once Slag is defeated and the others in the room dealt with, the dampening coil can be found in the back right part of the room on the ground level, as part of a large blue circular 'button'. Take it and travel back to the Yangtze.

Upon returning, enter the submarine and speak with Zao again. He'll be ecstatic at the Sole Survivor's retrieval of the coil and go on to say he now needs nuclear fuel. He will say that during the Great War, one of the missiles on his submarine did not fire and that this is what he will need the player character to find in the depths of his ship, warning them that his crew is still alive in the deeper parts of the vessel and that they were not as fortunate as he was, as all have been turned into feral ghouls.

Walk through the door leading to the bulkhead. Upon entering, several feral ghouls will be found roaming about. With the submarine rooms being so small, they'll need to be confronted as one travels further into the vessel. While there are many rooms, there's only ever one way to progress. Through this portion of the submarine, radiation levels can increase greatly at a consistent rate of 1 to 3 rads per second in the first room of the bulkhead and upwards of over 20 rads per second in the middle of the room where the warhead is found.

Eventually, the final room will be reached where the first mate, who has been transformed into a glowing one, is found. This is the room the warhead is found in, which can be taken once the first mate is defeated. From here, Zao will need to be spoken to once again.

He will give instructions to insert the dampening coil into the submarine followed by the warhead. If this is done in the reverse order, the submarine will explode, ending the quest and the Sole Survivor's life. Once this is done correctly, speak to Zao one final time. He will reward the player character with three homing beacons, each of which allows for one tactical nuclear strike, ending the quest. If any or all of the speech checks were passed at the beginning of the quest, he will also give them 4 stacks of pre-War money for the first passed speech check, 200 caps for the second passed speech check, and his unique sword, Zao's sword, as the result of passing all three.

Quest stages

Quest stages
StageStatusDescriptionLog Entry
100 Find the sea monster I met a boy named Donny on the docks. He claims he saw a sea monster in the bay.
200 Investigate the submarine I met a boy named Donny on the docks. He claims he saw a sea monster in the bay. The sea monster turned out to be a Chinese submarine.
202 I met a boy named Donny on the docks. He claims he saw a sea monster in the bay. The sea monster turned out to be a Chinese submarine manned by a ghoul named Captain Zao.
210 Donny claims he saw a sea monster in the bay. The sea monster turned out to be a Chinese submarine manned by a ghoul named Captain Zao. I refused to help Zao repair it.
300 Get the warhead Donny's sea monster turned out to be a Chinese submarine captained by a ghoul named Zao. I've agreed to get a nuclear warhead from below decks to refuel the submarine's reactor.
310 Talk to Zao
500 Get the dampening rods Donny's sea monster turned out to be a Chinese submarine captained by a ghoul named Zao. I've agreed to get a nuclear dampening coil from the Saugus Ironworks to repair the submarine's reactor.
700 Talk to Zao
800 Install Dampening Rods Donny's sea monster turned out to be a Chinese submarine captained by a ghoul named Zao. I need to install the dampening coil, then the nuclear warhead to repair the submarine's reactor.
850 Install Warhead
900 Talk to Zao
950
Here there be monsters fallout 4
Quest complete Donny's sea monster turned out to be a Chinese submarine captained by a ghoul named Zao. After helping him repair his submarine, Zao is heading back to mainland China.

Notes

  • It is possible to escape the ship after putting the warhead in first (with the use of Jet), however, one will still be killed by the explosion.
  • At any point after entering the sub and speaking to Zao, one can return to Donny and either tell him the "monster" swallowed them whole and that they had to cut it open from the inside, or tell him the truth that it is just a submarine.
  • After completing the quest, Travis Miles will report sightings of a submarine going out to sea. However, the Yangtze does not leave or move.
  • The homing beacons can still be used regardless of Zao being alive or dead.

Behind the scenes

  • The name of the quest is a reference to the phrase "here be dragons" or the practice of adding illustrations of dragons, sea monsters, and other mythological creatures on uncharted areas of maps where potential dangers were thought to exist.
  • Completing the quest (MS02) would lead to the next quest (MS02), the famed 20 Leagues Under the Sea, where the Sole Survivor would sail the Yangtze out to Vault 120. The quest and the corresponding location were scrapped before release, but leftover coding and locations made it into Fallout 76, years later.

Gallery

Here there be monsters fallout 4

Here there be monsters fallout 4

Periscope

Here there be monsters fallout 4

Submarine's hatch

Here there be monsters fallout 4

Here there be monsters fallout 4

The activated reactor

Here there be monsters fallout 4

v · d · e

Quests in Fallout 4

Main quests Act 1 War Never Changes · Out of Time · Jewel of the Commonwealth · Unlikely Valentine · Getting a Clue · Reunions
Act 2 Dangerous Minds · The Glowing Sea · Hunter/Hunted · The Molecular Level
Act 3 Institutionalized · From Within · Inside Job · Underground Undercover
Side quests Cambridge Polymer Labs  · Confidence Man · Curtain Call · Dependency · Diamond City Blues · Emogene Takes a Lover · Here Kitty, Kitty · Here There Be Monsters · Hole in the Wall · Human Error · In Sheep's Clothing · Kid in a Fridge · Last Voyage of the U.S.S. Constitution · Mystery Meat · Order Up · Out in Left Field · Painting the Town · Pickman's Gift · Public Knowledge · Pull the Plug · Reveille · Short Stories · Special Delivery · Story of the Century · The Big Dig · The Devil's Due · The Disappearing Act · The Gilded Grasshopper · The Marowski Heist · The Memory Den · The Secret of Cabot House · The Silver Shroud · Trouble Brewin' · Vault 75 · Vault 81
Companion quests Benign Intervention · Emergent Behavior · Long Road Ahead · Long Time Coming
Miscellaneous quests Art Appreciation · Atom Cats · Botany Class · The Cleaner · The Combat Zone · Detective Case Files · Diamond City's Most Wanted · Fallen Hero · Find the Treasures of Jamaica Plain · Fly Fishing · Giddyup 'n Go · Gun Run · Hazardous Material · Meet Ness at the Crash Site · Nuka Cola Needs · Pool Cleaning · Prep School · Traffic Jam · Treasure Hunt · Vault 81 Tour · Virgil's Cure
Unmarked quests A Pillar of the Community · Bill Sutton · Brother Against Brother · Familiar Faces · Fertilizer Woman · Holly · Lucy Abernathy · Maintenance Man · Quality Assurance · Supervisor Brown · Supervisor Greene · Suspected Synth · Wedding Day
Cut quests 20 Leagues Under the Sea · Bullet · Off the Grid · Salvage · That's the Spirit · The Enemy of My Enemy · The Replacement
Creation Club quests
Here there be monsters fallout 4
A Pint-Sized Problem · A Place to Call Home · Burned on the River · Can You See Me Now? · Captain Cosmos · Carbonated Concerns · Combat Ready · Crucible · Deathmatch · Dog Rescue · Early Retirement · Enclave Radio · From Hell · Giddyup! · Holiday Spirits · Malevolent Malfunction · Method to the Madness · Neon Winter · Over the Moon · Pyromaniac · Shrouded Manor · Silver like the Shroud · Slocum's Joe · Speak of the Devil · The Paper Mirror · The Prototype · The Quantum Stag · Tunnel Snakes Rule! · Way Back Home

Faction quests

Brotherhood of Steel Main quests Fire Support · Call to Arms · Semper Invicta · Shadow of Steel · Tour of Duty · Show No Mercy · From Within · Outside the Wire · Liberty Reprimed · Blind Betrayal · Tactical Thinking · Spoils of War · Ad Victoriam · The Nuclear Option
Side quests A Loose End · A New Dawn · Cleansing the Commonwealth · Duty or Dishonor · Feeding the Troops · Leading by Example · Learning Curve · Quartermastery · The Lost Patrol
Commonwealth Minutemen Main quests When Freedom Calls · Sanctuary · The First Step · Taking Independence · Old Guns · Inside Job · Form Ranks · Defend the Castle · The Nuclear Option
Side quests Clearing the Way · Ghoul Problem · Greenskins · Kidnapped Trader · Kidnapping · Out of the Fire · Raider Troubles · Resettle Refugees · Returning the Favor · Rogue Courser · Taking Point · The Sight · Troubled Waters · With Our Powers Combined
The Railroad Main quests Road to Freedom · Tradecraft · Boston After Dark · Underground Undercover · Operation Ticonderoga · Precipice of War · Rockets' Red Glare · The Nuclear Option
Side quests A Clean Equation · Burning Cover · Butcher's Bill · Butcher's Bill 2 · Concierge · High Ground · Jackpot · Lost Soul · Memory Interrupted · Mercer Safehouse · Randolph Safehouse · To the Mattresses · Variable Removal · Weathervane
The Institute Main quests Institutionalized · Synth Retention · The Battle of Bunker Hill · Mankind - Redefined · Mass Fusion · Pinned · Powering Up · End of the Line · Airship Down · Nuclear Family
Side quests A House Divided · Appropriation · Building a Better Crop · Hypothesis · Plugging a Leak · Political Leanings · Reclamation · Pest Control

Add-on quests

Automatron

Far Harbor

Main quests Mechanical Menace · A New Threat · Headhunting · Restoring Order
Side quests Rogue Robot
Main quests Best Left Forgotten · Cleansing the Land · Close to Home · Far From Home · Reformation · The Way Life Should Be · Walk in the Park · Where You Belong
Side quests Ablutions · Acadian Ideals · Blood Tide · Brain Dead · Data Recovery · Deadliest Catch · Forbidden Knowledge · Hull Breach · Hunting the Hunter · Living on the Edge · Rite of Passage · Safe Passage · Search and Destroy · Shipbreaker · The Arrival · The Changing Tide · The Great Hunt · The Heretic · The Hold Out · The Price of Memory · The Trial of Brother Devin · Turn Back the Fog · Visions in the Fog · What Atom Requires · Witch Hunt
Vault-Tec Workshop

Nuka-World
Main quests Vault-Tec Calling · Better Living Underground · A Model Citizen · Explore Vault 88 · Power to the People · The Watering Hole · Vision of the Future · Lady Luck
Side quests Overseer's Most Wanted
Main quests All Aboard · Taken for a Ride · An Ambitious Plan · The Grand Tour · Home Sweet Home · Power Play
Side quests A Magical Kingdom · A World of Refreshment · Amoral Combat · Cappy in a Haystack · High Noon at the Gulch · Open Season · Precious Medals · Safari Adventure · Star Control · Trip to the Stars

How do I start Here There Be Monsters in Fallout 4?

The Here There Be Monsters side quest can be started by heading to Yangtze. Yangtze is in the water, and is located east of Shamrock Taphouse, south of Boston Airport, and north of Four Leaf Fishpacking Plant. Head to Yangtze and you'll obtain the quest once you get close.

Are there monsters in the ocean in Fallout 4?

I swim alot in fallout 4 as its faster than walking everywhere on land and wasting ammo on random encounters, BUT I'm terrified of the open dark water where anything can be below the surface.

What happens if you install the warhead first?

It is possible to escape the ship after putting the warhead in first (with the use of Jet), however, one will still be killed by the explosion.

Does the Yangtze leave Fallout 4?

Although the main point of the quest involving the sub is to ensure that Zao can actually leave Boston's harbor and return back home to China, the submarine never leaves the harbor, probably due to game design limitations.