46 C.F.R. § 153.1040 – Carbon disulfide.

(a) No person may load, carry, or discharge carbon disulfide unless the cargo tank has a water pad over the cargo of at least one meter (approx. 40 in.).
(b) The person in charge of a carbon disulfide transfer operation shall ensure that carbon disulfide is discharged only by displacement or intank cargo pump.
(c) No person may remove a cargo pump for a containment system that carries carbon disulfide unless:
1. (1) The containment system has a gas free certificate issued under the standards in § 35.01-1 of this chapter; or
2. (2) The vapor space in the pump well is filled with water.