On a transpacific voyage, you receive a message from your vessel's operators saying that your vessel has been consigned to Naval Control of Shipping. Further information is contained in __________.

Correct Answer: Option B — Radio Aids to Navigation (PUB 117)

NGA Publication 117, Radio Aids to Navigation, provides comprehensive details regarding Naval Control of Shipping, communication procedures, and emergency reporting requirements. This publication serves as the primary reference for mariners operating under military control or during periods of heightened security, as outlined in standard USCG navigation training materials.