Oct 16, 2025

Sunken Engine Walkthrough – Prologue

Ali Amir

Discover everything you need to know about completing the Prologue in Sunken Engine, including some crucial steps to follow.

Sunken Engine is a ship repair simulation game, where you must keep the business you inherited alive. Restore your father’s old shipyard. Each arriving ship carries a dark mystery to be solved. Use different items like a garbage bin, a cleaning brush, and a scraping spatula to clean the shipyard and ships.

Completing the Prologue requires you to complete several contracts in Jeremiah’s Shipyard. Find the Machine and take the contract. Completing each one of them grants you money. Prologue is a simple mission, as you only need to complete the contracts. Interact with the NPC after cleaning the ship in every contract to complete it.

In this guide, we’ll discuss how to complete Prologue in Sunken Engine, including how to use different items to clean the shipyard and ships.

For more information on Sunken Engine, check out its official Steam page.

Locate the Fax Machine
Complete all Contracts

Locate the Fax Machine

You initiate the game near Jeremiah’s Shipyard, on the small boat. Press the E key to speak with Horace McBride on the boat.

Select the first option during the dialogue that says, “I didn’t come for stories, old man. Just to cross”. A cutscene will commence, showcasing your first objective in the game. Your objective in Sunken Engine is to Follow Your Father’s Legacy. Initiate your journey from Jeremiah’s Shipyard.

Move straight and open the door on the left to get inside. Upon entering this room, approach the steel rack just on the left to read the note.

Go through the tutorial and press the Next button. Hold Tab to open your tool wheel. Move your mouse toward the tool you need, as each direction holds a different purpose. Release the Tab to equip it and get to work. You can equip different items from the top wheel based on your requirements.

You can collect trash and burn it in the stove with the garbage bin. The cleaning brush lets you scrub off stains from surfaces. Some dirt and garbage are hard to see. Press the ‘Q’ to use Shipyard Sonar, holding some of your tools. Once you read the note, open the tool wheel and equip the garbage bin to collect the trash in this area. Use the brush to clean the stains from the ground.

Interact with the picture frame on the right of the door next to you. Clicking on the available dots allows you to fast-travel to that area.

Take the stairs in this room and open the door by pressing ‘E’. You will find the Fix Machine over there. All the available jobs arrive via the fax machine. You cannot accept a new job until the current one is finished.

Approach the table on the right side of the room and interact with the Ship Repairment Request. Press the LMB to drag it. Click on the right option to select the request, and the note will be sent to the Fax machine.

Complete all Contracts

Some surfaces have things like oysters, starfish, and similar items stuck to them. You can scrape them off using the scraping spatula. Move back to the room you came from and see the NPC over there. Approach the ship over there and take all the trash from it. Put all the collected trash in the furnace to your right, near the locked door.

Approach the ship again and use a scraping spatula to collect all the other items from it. Use the cleaning crush to remove the dirt from footsteps from the ship. Doing so allows you to gain XP.

Interact with the Good Kerry and collect the first option to complete the contract.

Now, approach the Fax Machine again to get a new contract. Take the stairs and go near the table to interact with the repair request. Hold the LMB to accept the contract.

Go down the room and a new ship will be available over there. Take out the garbage bin and collect all the trash from it. Put the garbage in the furnace to burn it. Use the cleaning brush to remove the stains from the ship.

After that, interact with the Clean Shawn and select the first option to complete the contract. At night, you can sleep or visit certain places that aren’t available during the day. However, the night is more dangerous than the day. Still, you may find some advantages in Blackreef after dark, such as catching fish that can only be found at night. Go to the fax machine room and sleep on the bed. Before you wake up, you can get your Day End Summary.

Once you wake up, approach the table and get your new contract.

Take the stairs to go down and move out of the room. Interact with the Hose Junior on the left to purchase the available item using 15x Oyster. Move back inside the room to complete the contract.

Equip your garbage bin and collect all the trash from the ship to demolish it in the furnace on the right. Use the scraping spatula to collect the Oyster and speak with the salty Jean to complete the contract.

Move out of the room with the scraping spatula and deposit the oyster in the bag next to the door. Once you have enough oyster, you can purchase them all.

Interact with the Blackreef and move to the different locations to find out what they are offering. Anyway, move back to the Fax machine to get your new contract.

Completing this contract will reward you with $74. Move back to the room below and wait for the ship to arrive.

Collect all the trash using the garbage bin and burn it in the furnace. Use the cleaning brush to remove the dirt from the ship to make it clean. Take out the scraping spatula to collect the other oyster. Interact with the Smelly Morgan to complete this contract.

Take the other contract and complete it to get the Shipyard Operating License.

Move back up to the room and sleep on the bed. Once you wake up, a new contract will be available. Interact with it to accept it and move down the room to clean the ship. Interact with the Fisherman Lane to complete this contract.

The locked door will be knocked down by Ronald Sawyer. Approach the door to unlock it. Click the first option to gain the Father’s Last Letter.

A small cutscene will initiate, showcasing Jeremiah Marvin. This area is filled with water, and the pages and floating in the air. Interact with the Jeremiah Marvin and select the first option.

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