The Sinking City 2 Guide | How to Solve the Salt Storage Lock

The Salt Storage Puzzle in The Sinking City 2 is a Roman numeral combination puzzle that requires you to identify a pattern hidden among 16 different symbols. Solving it opens the locked Salt Storage room and gives you access to a useful Grenade Launcher modification, Dream Essence, and other supplies.

The puzzle can be found while exploring the Fish Market's Cutting Area during Chapter 4: Time and Tide. At first, the large number of Roman numeral buttons can make the solution seem more complicated than it actually is.

Fortunately, you don't need to randomly test every combination. Once you recognize the mathematical pattern behind the numbers, the correct solution becomes straightforward. Here's everything you need to know to find the clues, solve the lock, and collect the rewards inside the Salt Storage.

Where to Find the Salt Storage Lock

The Salt Storage Puzzle is located in the Fish Market's Cutting Area during Chapter 4: Time and Tide.

When you reach the Cutting Area, look for the locked Salt Storage door. A wooden panel next to the door contains 16 buttons, each marked with a Roman numeral.

Before you can reach the door, you may need to deal with the steam blocking the route. Use the Handwheel on the nearby pipe to shut off the steam and access the area.

How to Find the Salt Storage Lock Clues

The solution can be worked out through the Sixteen Punishments of the Sailor investigation.

Look for the clues around the Fish Market, including The 16 Punishments of the Sailor, Instructions to Sybil, and Warning to Sybil. Connecting these pieces of evidence reveals the pattern needed for the Salt Storage lock.

The simpler way to understand the solution is to look at the numbers represented by the Roman numerals. The first four perfect squares are:

• 1 = I
• 4 = IV
• 9 = IX
• 16 = XVI

This gives you the complete combination.

Salt Storage Lock Solution

Interact with the wooden panel beside the Salt Storage door and select the following Roman numerals from left to right:

• I → IV → IX → XVI

Once all four symbols are selected, validate the combination.

The correct Salt Storage lock solution is I → IV → IX → XVI.

Be careful when selecting the symbols, as IX and XI can be easy to confuse on the panel. You need IX, which represents 9.

Salt Storage Lock Rewards

Once the door opens, enter the Salt Storage room and collect the Grenade Launcher modification inside. The upgrade improves the weapon's effectiveness when a grenade hits multiple targets.

You can also find a Dolorocide Pill and an additional clue inside the room. There's also a green crystallized figure on the floor. Stomp the figure to obtain hidden Dream Essence.

Opening the Salt Storage also completes the The Damned optional investigation when its requirements are fulfilled.

FAQ

Q. What is the solution to the Salt Storage Lock?

A. The solution is I → IV → IX → XVI.

Q. Where is the Salt Storage Lock?

A. The puzzle is in the Fish Market's Cutting Area in Chapter 4: Time and Tide.

Q. Why is the solution I, IV, IX, XVI?

A. These Roman numerals represent 1, 4, 9, and 16, the first four perfect squares.

Q. What is inside the Salt Storage room?

A. You'll find a Grenade Launcher modification, a Dolorocide Pill, a clue, and hidden Dream Essence.

Q. Is the Salt Storage Puzzle required to finish the story?

A. No. The Salt Storage is part of the optional The Damned investigation, but completing it gives you useful rewards and contributes toward completion.