On offshore drilling units, each inflatable liferaft must be serviced every __________.

Correct Answer: Option A — 12 months

46 CFR 109.213 requires inflatable liferafts on MODUs to be serviced at an approved facility every 12 months. This annual interval ensures the integrity of the inflation system, the condition of the raft fabric, and the expiration status of pyrotechnic signals and emergency rations contained within the pack.