Question 968 Deck General

The correct answer is D) certified marine chemist. A gas-free certificate is issued by a certified marine chemist to indicate that a space, such as a cargo hold or fuel tank, has been tested and found to be free of flammable or toxic gases. This is an important safety requirement before personnel can enter a confined space. The other options are incorrect because a Coast Guard marine inspector, ABS marine surveyor, and port engineer do not have the specific certification and expertise required to test and certify a space as gas-free. This specialized task falls under the purview of a certified marine chemist.