The full period of motion of the DEEP DRILLER while tripping is 10 seconds and the maximum pitch angle as seen on the inclinometer is 4 degrees. From the standpoint of critical motion, the motion is __________.

Correct Answer: Option A — satisfactory, continue tripping

MODU operational limits for tripping drill pipe depend on vessel motion criteria. A 10-second period with a 4-degree pitch angle falls within acceptable stability and dynamic stress envelopes, allowing operations to continue safely.