151.41—Operating requirements for oceangoing ships with IOPP Certificates: Category C and D Oil-like NLSs.
The master or person in charge of an oceangoing ship certificated under § 151.37(a) shall ensure that—
(b)
The oil-like NLS is not discharged unless—
(1)
The monitor required by § 151.37(a)(1) is set to detect the oil-like NLS; and
(2)
A statement that the monitor has been set to detect the oil-like NLS is entered in the Oil Record Book Part II(Cargo/Ballast Operations), required by § 151.25.