National Maritime Center Providing Credentials to Mariners (Sample Examination) Page 1 of 12
Choose the best answer to the following Multiple Choice Questions. 1. What class of bulkhead is required around the galley on a MODU? (A) Class A o (B) Class B o (C) Class C o (D) Class D 2. Annual inspection of MODU cranes shall be conducted by. o (A) the crane operator o (B) U.S. Coast Guard o (C) the person in charge (D) a qualified inspector 3. The longitudinal free surface moments of a drilling mud pit aboard a MODU displacing 24,000 long tons in sea water is 1,200 ft-long tons. If the sounding level in the mud pit is reduced from 8 to 6 feet and the mud weight increases from 10 to 12 lbs/gallon, what is the new FSML for the mud pit? o (A) 750 ft-long tons o (B) 1,000 ft-long tons (C) 1,440 ft-long tons o (D) 1,920 ft-long tons 4. A MODU which is required to carry an Oil Record Book must log in the book. o (A) sounding levels of all fuel tanks on a daily basis o (B) the grade and specific gravity of all fuel oil carried o (C) fuel consumption rates on a weekly basis (D) discharge of ballast or cleaning water from fuel tanks 5. If a man falls overboard from a rig under tow, you should FIRST. o (A) launch a boat (B) deploy life buoys o (C) sound the general alarm o (D) notify the tug Page 2 of 12
6. Prior to entering a davit-launched liferaft, which of the following checks should make first? o (A) all personnel have removed their life preservers to facilitate boarding (B) the liferaft is well ventilated of excess carbon dioxide o (C) the door flap has been cut away and stowed inside the raft o (D) All of the above 7. The COASTAL DRILLER is loaded as shown in Sample Load Form #3 (Drilling). What would be the new sum of longitudinal moments for the liquid variables if the entire contents of drill water tank #17 are transferred to drill water tank #18? o (A) 181,648 ft-kips (B) 181,718 ft-kips o (C) 187,345 ft-kips o (D) 195,462 ft-kips 8. The total leg load reactions on an independent leg, self-elevating unit include static and. o (A) basic loading (B) environmental loading o (C) variable loading o (D) fixed loading 9. Considering the lightweight changes to the COASTAL DRILLER, what is the maximum permitted hook load permitted when 450 kips are in the setback and 200 kips are in the cantilever pipe rack? o (A) 350 kips (B) 529 kips o (C) 550 kips o (D) 750 kips 10. Beyond the area of state ownership in the U.S. outer continental shelf, the right to drill is controlled by the. (A) Minerals Management Service o (B) U.S. Corps of Engineers o (C) American Bureau of Shipping o (D) U.S. Coast Guard Page 3 of 12
11. The COASTAL DRILLER, elevated in 200 feet of water, has two knots of current and 70 knot winds. With a maximum leg reaction of 5,840 kips, the maximum wave height for drilling is. (A) 20 feet o (B) 30 feet o (C) 35 feet o (D) 40 feet 12. If the maximum leg penetration of the COASTAL DRILLER is 75 feet, the water depth value in the Allowable Wind and Wave Charts must be increased by. o (A) 75 feet (B) 50 feet o (C) 25 feet o (D) 0 feet 13. What is the percentage of oxygen in a typical sample of uncontaminated air? o (A) 12 percent o (B) 15 percent o (C) 18 percent (D) 21 percent 14. A slow and easy motion of a MODU in a seaway is an indication of a. (A) small GM o (B) stiff vessel o (C) low center of gravity o (D) large GZ 15. The COASTAL DRILLER is elevated to an air gap of 25 feet in 250 feet of water. The current is 2 knots and the waves are 30 feet. The maximum leg reaction is 6,120 kips. What is the maximum wind for drilling operations? o (A) 100 knots o (B) 70 knots o (C) 60 knots (D) 40 knots Page 4 of 12
16. The natural rolling period of a drilling barge increases when. o (A) free surfaces are reduced o (B) the setback is placed in the pipe racks (C) ice accumulates above deck o (D) GM increases 17. When threatened with a severe storm while operating in 250 feet of water, the COASTAL DRILLER should be placed at an air gap of. o (A) 35 feet o (B) 32 feet o (C) 30 feet (D) 25 feet 18. When fire pumps are used for other than firefighting services, each pipe connecting the other service (except for branch lines used for deck washing) must have which item to be incompliance with regulations? (A) A shut off valve at a manifold near the pump o (B) A check valve installed in the line o (C) A regulator in the line set at 125 psi o (D) A quick disconnect union within ten feet of the pump 19. Repair of structures on a MODU in the vicinity of liquid mud handling areas presents what possible hazard? o (A) Toxic gasses may be present. (B) Flammable gasses may be present. o (C) Liquid muds may flood adjoining spaces. o (D) An oxygen-deficient atmosphere may be present. 20. A small fuel spillage has occurred during helicopter refueling. After the leak has been stopped and fire-control personnel have been notified and are standing by, the next step is to. o (A) clean spilled fuel with rags (B) wash spilled fuel away with a flood of water o (C) proceed with fueling operation o (D) have helicopter move to a safer location Page 5 of 12
21. When should the emergency position-indicating radio beacon be activated after abandoning a MODU? o (A) Only after sunset o (B) Only when another vessel is in sight (C) Immediately o (D) After one hour 22. To have the ultimate authority for a mobile offshore drilling unit while it is under tow, a rig mover must. o o o (A) hold an Able Seaman endorsement and be designated as the person in charge of the rig (B) be certified by the Minerals Management Service and be designated as the person in charge of the rig (C) be certified by an approved classification society and be designated as the person in charge of the rig (D) hold an endorsement as Offshore Installation Manager and be held as the person in charge of the rig 23. What type of test determines the pressure at which the formation immediately below the last set casing will take fluid? o (A) Drill stem o (B) Conductor o (C) Production (D) Leak-off 24. When a wind force causes a floating MODU to heel to a static angle, the. o (A) downflooding point is below water o (B) centers of buoyancy and gravity are in the same vertical line o (C) deck-edge immersion occurs (D) righting moment equals the wind-heeling moment Page 6 of 12
25. To determine the number of industrial personnel allowed on a mobile offshore drilling unit, you should check the. (A) Certificate of Inspection o (B) Safety of Life at Sea Certificate o (C) Operations Manual o (D) Muster List ("Station Bill") 26. On the COASTAL DRILLER, when afloat, oily bilge discharge should be pumped through the. o (A) raw water header (B) skimmer tanks o (C) dump valves o (D) overboard discharge 27. The number of kips necessary to change the true mean draft of a MODU one inch is known as. o (A) KMD o (B) MH1 inch o (C) MT1 inch (D) KPI 28. 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 port leg reaction? o (A) 7,099 kips o (B) 7,134 kips o (C) 7,151 kips (D) 7,203 kips 29. In evacuation from a MODU, an individual without the option of a survival craft or liferaft should enter the water on the leeward side. This procedure is valid except when which of the following circumstances applies? o (A) a rigid survival craft is in the area (B) there is burning oil on the water o (C) there is a rescue craft in the area o (D) water temperature is below 40 F Page 7 of 12
30. On offshore drilling units fitted with fixed CO2 systems, the system must discharge at least 85 percent of the required amount of CO2 within. o (A) 1 minute (B) 2 minutes o (C) 3 minutes o (D) 4 minutes 31. You are operating a liftboat. Before starting jacking operations you should. o (A) close the wheelhouse doors (B) have all personnel don life jackets o (C) put the crane in a vertical position o (D) put a watch in the engine room 32. The rotary of the COASTAL DRILLER is located 36 feet aft of the transom and 6 feet to starboard of the centerline. The hook load is 300 kips. Considering the changes to lightweight shown in the Operating Manual, the maximum amount of setback is. o (A) 545 kips o (B) 450 kips o (C) 245 kips (D) 224 kips 33. A hurricane has recurved to the northeast and its forward speed is 20 knots. Your MODU is located 600 miles northeast of the hurricane's center. How long will it take for the hurricane center to reach your position if it holds its present course and speed? o (A) 10 hours (B) 30 hours o (C) 50 hours o (D) 80 hours 34. A heavy, thick-walled tube, usually steel, used between the drill pipe and the bit in the drill stem to weight the bit in order to improve its performance is called a. (A) drill collar o (B) tool joint o (C) down hole tool o (D) heavy-walled drill pipe Page 8 of 12
35. Accumulations of H2S gas on a MODU can be dangerous. It is imperative that personnel know that H2S gas possesses which of the listed characteristics? o (A) mildly toxic o (B) lighter than air o (C) a yellow gas that is easily recognized (D) heavier than air 36. An uncontrolled flow of gas, oil, or other well fluids into the atmosphere is called a. (A) blowout o (B) breakout o (C) flow o (D) kick 37. The COASTAL DRILLER is loaded as shown in Sample Load Form #3 (Drilling). What would be the new sum of longitudinal moments for the liquid variables if the entire contents of tank #19 are transferred to tank #13? o (A) 12,344 ft-kips o (B) 173,493 ft-kips (C) 181,174 ft-kips o (D) 1,929,523 ft-kips 38. Requirements for H2S preparation and equipment usage aboard MODU's in U.S. offshore waters are administered by the which of the following organizations? o (A) American National Standards Institute o (B) U.S. Coast Guard (C) Minerals Management Service o (D) U.S. Corps of Engineers 39. 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 is 2 knots. What is the maximum wind for drilling? o (A) 45 knots (B) 50 knots o (C) 57 knots o (D) 62 knots Page 9 of 12
40. The COASTAL DRILLER at a draft of 10.5 feet, transfers a portion of the on board liquids from full drill water tank #23 to empty drill water tank #24. What is the change in the free surface correction? o (A) 0.69 foot (B) 0.44 foot o (C) 0.34 foot o (D) 0.22 foot 41. Large quantities of gas in the shale shaker area may be an indication of. o (A) a break in the riser system o (B) a break in the drill string o (C) low formation pressure (D) high formation pressure 42. While preparing for a storm when elevated, the total weight of the COASTAL DRILLER is 14,150 kips, LM are 1,712,150 ft-kips, and TM are -9,905 ft-kips. The starboard leg reaction is. o (A) 4,536 kips o (B) 4,698 kips (C) 4,725 kips o (D) 4,890 kips 43. Why is electrical power preferred over mechanical power for driving heavy machinery on drilling rigs? (A) More flexible o (B) More fuel efficient o (C) Less maintenance o (D) Lighter 44. Structural stress levels in a MODU are the sum of loading stresses and stresses due to. o (A) ballast loading o (B) mooring loads (C) environmental loads o (D) variable loads Page 10 of 12
45. A survival craft being used to pick up a person who has fallen overboard from a MODU should approach the person. o (A) under oars o (B) with the wind o (C) at a high rate of speed (D) against the wind 46. Horizontal subdivision decks forming watertight compartments in the columns of a semisubmersible MODU increase the unit's. (A) stability in the event of damage o (B) towing speed o (C) tank capacities o (D) anchor holding ratio 47. During a storm, the mooring line on a MODU should be long enough so that the angle between the anchor shank and the ocean floor is. (A) 0 o (B) 30 o (C) 60 o (D) 90 48. In a storm, the leeward lines of a MODU's mooring system will. (A) pull the unit in the same direction that the weather is pushing it o (B) affect the unit's draft and inclination as maximum mooring tensions are reached o (C) pull the unit in the opposite direction that the weather is pushing it o (D) tend to keep the unit on its original location over the well head 49. Until a change to lightweight has been approved, the weights and center of gravity locations for the changes to lightweight shown in the permanent record for the Deep Driller are treated as. (A) variable load o (B) basic load o (C) fixed load o (D) gross tonnage Page 11 of 12
50. Periodic surveys to renew the load line assignment for a MODU must be made at intervals not exceeding. o (A) 18 months o (B) 2 years o (C) 3 years (D) 5 years Page 12 of 12