The control room has a lot of equipment. Is it the command center?

Yes, it has a lot of equipment. No, it is not the command center. 

The command center would be either the conning tower, which is above the control room, or the open bridge. The conning tower is the command center when the boat is submerged. It is always manned when at sea by a helmsman and quartermaster since steering and navigation are normally done from this space. Radar and sonar are also normally operated from this space. It would be very crowded during general quarters (battle stations) for submerged attacks with as many as 10 to 12 men in the space.

The conning tower is only about 20 feet long and 10 feet in diameter. It is made of slightly thicker steel due to its vulnerability since it is closer to the surface.

The bridge is the command center, where the officer of the deck will normally be when the boat is on the surface. When surfaced, the officer of the deck is supported by the crewmen in the conning tower and control room. This is particularly true when attacking while on the surface.