MODU Practice Test

1. 1. Which is TRUE of High-velocity fog?
2. 2. If you observe any situation which presents a safety or pollution hazard during fuel transfer operations on a MODU, what action should you take FIRST?
3. 3. In any major injury, first aid includes the treatment for the injury and what secondary condition?
4. 4. Your rescue craft is broken down and rolling in heavy seas. You can reduce the possibility of capsizing by __________.
5. 5. Which is TRUE concerning air masses near the earth's surface?

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1. 1. The COASTAL DRILLER, while in transit, expects the winds to increase to 75 knots. In order to meet the stability and leg strength requirements, the tip-of-can (...
2. 2. What are the additional vertical moments created when P-tank #4 in the DEEP DRILLER sample load form #1 (Transit) is completely filled?
3. 3. While preloading, the COASTAL DRILLER has a total weight of 21,401 kips. The LM are 2,560,416 ft-kips, and the TM are 6,206 ft-kips. What is the bow leg reactio...
4. 4. In anticipation of heavy weather, it is decided to deballast the DEEP DRILLER to survival draft. The marine riser should be disconnected, pulled, and laid down....
5. 5. If H2S exposure is anticipated, fixed monitoring devices aboard a MODU should have a low level concentration alarm to alert personnel. at what concentration lev...

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1. 1. The prohibition against exceeding the load line draft may be considered temporarily not applicable when __________.
2. 2. The DEEP DRILLER is under tow at a 20 foot draft. The rig motions are close to exceeding the limits for critical pitch and roll. The rig is also experiencing oc...
3. 3. Port ballast pump #1 on the DEEP DRILLER has failed. If you want to deballast the forward-port column using port ballast pump #2, it is necessary to open valves...
4. 4. A semisubmersible with a negative GM flops to an angle of __________.
5. 5. The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). Weather conditions require ballasting to survival draft. Assume that 4087 long tons of...

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1. 1. The DEEP DRILLER is loaded as shown in the Sample Load Form #5 (Survival) when an unexpected slowly increasing port list and bow down trim occurs. A leak in C1P...
2. 2. To determine the number of industrial personnel allowed on a mobile offshore drilling unit, you should check the __________.
3. 3. What type of test determines the pressure at which the formation immediately below the last set casing will take fluid?
4. 4. The procedure of strengthening damaged structures on a MODU by using wood or steel is called __________.
5. 5. What determines the minimum size of an anchor buoy?

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1. 1. For a MODU with transverse inclination, an increase in GMT causes __________.
2. 2. What is the minimum required number of fire axes that must be carried on a mobile offshore drilling unit?
3. 3. The COASTAL DRILLER, when underway was loaded as shown in Sample Load Form #1 (Rig Move). It is now preloaded at minimum air gap waiting for all settling to tak...
4. 4. In MODU construction, beams are transverse girders which provide support to __________.
5. 5. The COASTAL DRILLER is in ocean transit in which the winds are not expected to exceed 70 knots. In order to meet the leg strength requirements, the tip of can (...

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1. 1. The COASTAL DRILLER is elevated in 192 feet of water. Leg penetration is 83 feet. The maximum leg reaction is 5,940 kips. The waves are 30 feet and the current...
2. 2. Annual inspection of MODU cranes shall be conducted by __________.
3. 3. The number of certificated able seamen and lifeboatmen required on a MODU is determined by the __________.
4. 4. Compliance with the terms of the load line certificate on a MODU is the responsibility of the __________.
5. 5. In a storm, the leeward lines of a MODU's mooring system will __________.

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1. 1. Your present weather is sunny with a steady barometer. A low swell approaches your vessel from the south with crests passing at relatively long periods of about...
2. 2. When is the peak of the hurricane season in the western North Pacific?
3. 3. What is the primary source of the earth's weather?
4. 4. If the current and wind are in opposite directions, what does the sea surface indicate?
5. 5. Which of the listed properties does warm air possess?

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1. 1. The COASTAL DRILLER is loaded as shown in the Sample Load Form Number 1 (Rig Move). If the contents of the No.1 drill water tank are discharged, what would be t...
2. 2. After jacking down your liftboat you have an unexpected list. You find that the only cause of this list must be a flooded leg. Raising the flooded leg further w...
3. 3. Leg penetration to depths which require pullout forces greater than that which can be supplied by the buoyancy of the hull may exist in __________.
4. 4. While being towed at a 19.5 foot draft, the DEEP DRILLER experiences single amplitude rolls of 10° with a period of 8 seconds. You should __________.
5. 5. The maximum angle at which the intact stability curves are valid for MODU's is the angle for __________.

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1. 1. Weather systems in the middle latitudes generally travel in which direction?
2. 2. The international shore connection required on a MODU is designed to __________.
3. 3. What is best suited for fighting a fire in a ballast control room?
4. 4. Control of fire on a MODU should be addressed __________.
5. 5. Clean air standards, referred to as 'Grade D', apply to compressed air for use in __________.

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1. 1. On the COASTAL DRILLER, hook load includes the weight of the __________.
2. 2. On board a mobile offshore drilling unit, the key to the most rapid and effective response to a man overboard situation is __________.
3. 3. The DEEP DRILLER is loaded as shown in the Sample Load Form #2 (Ballasting to Survival). What is the shift in VCG if 100.76 long tons of ballast are added to Ba...
4. 4. Until a change to lightweight has been approved, the weights and moments shown in the Changes to Lightweight Record of the COASTAL DRILLER are treated as ______...
5. 5. If the result of loading a MODU is an increase in the height of the center of gravity, there will always be an increase in the __________.

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