The ritual room can be found during chapter 4 after you defeat the brute for the first time. Hammond will ask you to reroute the power to the ADS cannons. Once rerouting the power, you'll be sent through the bridge, up the 'admin systems and comms array' elevator to floor 3 (on the map it's floor 1). This will take you past the break room. If you go into the break room you'll see a TV showing the marker and a ritual circle with 6 lanterns around it. Pick up the various collectables in the room, step into the circle, and input the punch and stomp combinations in this guide. You'll be rewarded.

The first combination is found written on the circle itself.


P=Punch
S=Stomp

1)P-S-S-S-P-S-P-S-S-S-P-S

Use the marker symbol (the one that's almost a figure of 8) as your starting point and work clockwise around the circle. You'll be rewarded with a text log.


The rest of the combinations can be found around the ship, usually scrawled on the walls with blood like this location here:



If input correctly while standing in the circle, the following codes+rewards are:

2) P-P-S-P-P-S-S-P-P-P-S-S = 2 nodes

3) P-S-P-P-S-P-S-P-P-P-P-S = An audio log of characters singing a Dead Space themed version of
"Soon May the Wellerman Come"

***THIS WILL BE UPDATED AS SOON AS MORE ARE FOUND. IF YOU KNOW OF A CODE NOT ON HERE, PLEASE MESSAGE ME AND I'LL UPDATE THE GUIDE, GIVING YOU FULL CREDIT***

I'm leaving this area for speculative codes that haven't been deciphered yet.

The picture below shows the markings painted around the ship that led the community to find the sea shanty audio log.