In The Sinking City 2, inside the fishing tackle shop on the second floor of the CSimulator, there is a spherical container locked with a buoy combination lock. To obtain the code for this lock, you need to analyze it carefully. The specific combination is Lighthouse - Rope - Starfish - Octopus. The references can be found in "About Ezekiel" and "Letter from Ezekiel's Wife."
How to Open the Buoy Combination Lock at the Fishing Tackle Shop in The Sinking City 2 CSimulator