46 CFR § 30.10-19a
Control space—TB/ALL
April 15, 2021
The term control space means an enclosed space in which is located a ship's radio, main navigating equipment, or emergency source of power or in which is located centralized fire recording or fire control equipment, but not including firefighting apparatus that must be located in the cargo area or individual pieces of firefighting equipment.
[CGD 74-127, 41 FR 3843, Jan. 26, 1976]