Question 141Safety & Environmental - 1st Asst/Chief

The correct answer is A) once a year. According to the Coast Guard regulations, a shipboard oil pollution emergency plan must be reviewed and updated annually. This requirement is specified in 33 CFR 155.1030(c), which states that the plan must be reviewed and updated as necessary, but at least once each calendar year. The other options are incorrect because they do not align with the Coast Guard's annual review requirement for the shipboard oil pollution emergency plan. The plan cannot be reviewed once every two, four, or five years, as that would not meet the regulatory standard.