A vessel is not required to carry urine specimen collecting kits onboard the vessel only if the individuals directly involved in a Serious Marine Incident can be tested ashore within __________?

Correct Answer: Option C — 32 hours

46 CFR 4.06-20 provides an exemption from carrying onboard urine specimen collection kits if the vessel can ensure that individuals involved in a Serious Marine Incident are tested at a facility ashore within 32 hours of the incident. This allows for logistical flexibility in ports with adequate medical infrastructure.