The Officers Competency Certificates Convention of 1936 applies to all of these vessels operating seaward of the boundary line EXCEPT a/an _________.

Correct Answer: Option D — uninspected towing vessel of less than 200 gross tons

The Officers Competency Certificates Convention (OCCC) of 1936, codified in 46 U.S.C. 8304, applies to seagoing vessels of 200 gross tons or more. Uninspected towing vessels under 200 gross tons fall below this regulatory threshold, exempting them from the specific manning and certification requirements mandated by this international convention.