A vessel involved in a marine casualty remains in the navigable waters of the United States following the incident. For how long must the master or person in charge ensure that voyage records are retained?

Why C is correct

33 CFR §164.61(b)(1) requires voyage records to be retained for 30 days after the casualty when the vessel remains in the navigable waters of the United States. The 5-day figure is the deadline for filing the written CG-2692 report, and 90 days is the period within which an insurance underwriter for a commercial fishing vessel must report to an accepted organization under 46 CFR §28.80(b).