- improved airlock system (opens at value >90, external hatch should not react to flooding during docking)
- disabling collisions for decorative walls
- access to the arsenal only for the captain and security

- fix real terminal position
- fix a windshield that didn't cause flooding when damaged
- calibration of engine wear parameters, now they are more consistent with the description of the sub
- observation periscope has been replaced by an surveillance center
- improving drainage pumps circuit
- added captain's safe to bridge
- added music center to the bridge
- resistance of junction boxes has been reduced from 2.0 to 1.8
- submarine price changed from 4200 to 4800

- fixed display of the airlock button
- displacement of the reactor from the door to the right
- fixed waypoints
- shutdown of pumps when opening the upper ballast

- minor decoration fixes
- replacing containers under beds
- adding a circuit box for the reactor