Question 3463Deck General70% to pass
The full period of motion of the DEEP DRILLER while in transit is 7 seconds and the maximum pitch angle as seen on the inclinometers is 7°. From the standpoint of critical motion, the motion is _______________.
AI Explanation
The correct answer is C) unsatisfactory, ballast to survival draft.
The key factors here are the period of motion (7 seconds) and the maximum pitch angle (7°). According to industry standards, a period of motion less than 10 seconds and a maximum pitch angle greater than 5° are considered critical motion that could potentially be unsafe for the vessel and its crew. In this case, the 7-second period and 7° pitch angle exceed the recommended limits, indicating an unsatisfactory condition. The appropriate action is to ballast the unit down to the survival draft, which will improve the vessel's stability and reduce the risk of critical motion.
The other options are incorrect because: A) and B) suggest putting the unit in standby, which would not address the critical motion issue; D) keeping the unit at transit draft would not resolve the excessive motion.
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#3461 Installing tandem anchors on the same mooring line is referred to as _______________.#3462 With the DEEP DRILLER anchored in 500 feet of water and with the tension on the mooring chain of 170 kips, the length of the catenary is _______________.#3464 The process of waiting a period of time before pre-tensioning an anchor is known as _______________.#3465 The indication of a slipping anchor is a(n) _______________.#3466 The motion that can significantly increase mooring line tension is _______________.