The full period of motion of the DEEP DRILLER while tripping is 10 seconds and the maximum pitch angle as seen on the inclinometers is 8 degrees. From the standpoint of critical motion, the motion is __________.

Correct Answer: Option A — unsatisfactory, deballast to survival draft

Operating envelopes for floating drilling units relate motion periods and amplitudes to critical limits. A 10-second pitch period combined with an 8-degree amplitude exceeds allowable dynamic stability thresholds, requiring immediate deballasting to survival draft to prevent severe structural damage.