USCGQ
Log in Start free
USCGQ
Toggle sidebar
Home
Deck
Deck General
Start practicing

Deck · 5,775 questions

Deck General - USCG Exam Questions

Seamanship in the broad sense: marlinespike, ground tackle and anchoring, mooring and towing, weather, stability basics, and day-to-day vessel operations.

Every question below is a real U.S. Coast Guard exam question with four choices. Answer one and the correct choice is revealed instantly, with the USCG reference and illustration where the question uses one.

Random question Build a timed exam

All Deck General questions

Questions 3,201–3,300 of 5,775 · page 33 of 58

  1. #3371 When a MODU is afloat in equilibrium, the horizontal component of mooring line tensions should equal __________.
  2. #3372 Where will you find the requirements for the signals that must be sounded by a mobile offshore drilling unit that is being towed through an area of re...
  3. #3373 The full period of motion of the DEEP DRILLER while tripping is 8 seconds and the maximum pitch angle as seen on the inclinometers is 4 degrees. From...
  4. #3374 What could cause a significant difference between actual chain tension and the tension measured by the tensiometer?
  5. #3375 When must a MODU display navigation lights while underway?
  6. #3376 While a MODU is underway, a look-out must be maintained __________.
  7. #3377 The KG of the DEEP DRILLER increases from 57 feet to 59 feet while drilling at a 60 foot draft during an ice storm. What action should be taken?
  8. #3378 Your jack-up is being towed along a shipping channel. You are concerned that a vessel that is overtaking you is coming too close to pass safely. You m...
  9. #3379 A jack-up drilling rig being towed must __________.
  10. #3380 The prohibition against displaying lights which may be confused with required navigation lights applies __________.
  11. #3381 The COASTAL DRILLER is experiencing a single amplitude roll angle of 2 degrees and a roll period of 10 seconds. What is the maximum recommended water...
  12. #3382 A permanent chain chasing system is used to __________.
  13. #3383 A mobile offshore drilling unit under tow is approaching a fog bank. When should fog signals be started?
  14. #3384 What is the "holding power ratio" of an anchor?
  15. #3385 During a move to a new location, a jack-up drilling unit with personnel on board is towed through a heavy rainstorm. What signal must be sounded by th...
  16. #3386 What signal must be sounded by a vessel towing a mobile offshore drilling unit through an area of restricted visibility?
  17. #3387 When dragging of an anchor occurs, you must back it up with a piggyback (backing) anchor or __________.
  18. #3388 Given the same water depth and line tension, the catenary length of a 19 pound/foot wire rope mooring line in comparison to the catenary length of a 9...
  19. #3389 The length of chain between the anchor and the end of the pendant line is called the __________.
  20. #3390 The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). Weather conditions make it necessary to ballast down to survival draft. It i...
  21. #3391 If the water depth is 500 feet, the length of the pendant wire from the anchor to the buoy is typically __________.
  22. #3392 Given the same water depth and mooring tension, the length of the ground cable of a 19 pound/foot wire rope mooring line in comparison to a 90 pound/f...
  23. #3394 In a storm, the leeward lines of a MODU's mooring system will __________.
  24. #3395 The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). Excessive motion makes it necessary to ballast down to survival draft. It is...
  25. #3396 Why should you soak an anchor?
  26. #3397 What effect is achieved from soaking an anchor?
  27. #3398 To develop maximum anchor holding power, the optimum angle between the anchor's shank and the mooring lines is __________.
  28. #3399 In observing rig motion while under tow, the period of roll is the time difference between __________.
  29. #3400 After deploying the anchor, a permanent chain chaser is __________.
  30. #3401 What is the purpose of a chain stopper?
  31. #3402 Cable tension for catenary calculations is taken at the __________.
  32. #3403 The tension on an anchor cable increases so that the angle of the catenary to the seabed at the anchor reaches 10 degrees. How will this affect the an...
  33. #3404 When dragging of an anchor occurs, you must either reposition it at greater range or __________.
  34. #3405 The indication of a slipping anchor is a(n) __________.
  35. #3406 The two main types of load cells used in mooring tension gauges are __________.
  36. #3407 Scouring usually occurs with soils such as __________.
  37. #3408 The DEEP DRILLER is moored in 700 feet of water. The average tension on the mooring lines is 200 kips. What is the total vertical component of chain t...
  38. #3409 The DEEP DRILLER is moored in 600 feet of water. The average line tension is 190 kips. What is the total vertical component of chain tension?
  39. #3410 The DEEP DRILLER is moored in 700 feet of water. The tension on anchor line #3 is 200 kips. What is the vertical component of chain tension for that l...
  40. #3411 While anchored in 700 feet of water, 3,150 feet of chain is deployed for line #4. Tension on that line is 200 kips. According to the DEEP DRILLER Oper...
  41. #3412 What is the length of the catenary when the DEEP DRILLER is anchored in 600 feet of water and the anchor line tension is 170 kips?
  42. #3413 The DEEP DRILLER is anchoring in 600 feet of water. In the absence of environmental forces, the mooring lines should be adjusted to __________.
  43. #3414 The overturning forces acting on a floating jack-up are generally dominated by __________.
  44. #3415 For a semisubmersible moored in heavy weather conditions, the leeward lines should be paid out, and the windward lines adjusted so that __________.
  45. #3416 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 __________.
  46. #3417 When the air temperature is just below 32°F, snow FIRST adheres to __________.
  47. #3418 It is proposed to moor the DEEP DRILLER in 600 feet of water in a region in which the effective wind velocity could reach 80 knots, significant wave h...
  48. #3419 The time required to ballast the DEEP DRILLER to survival draft, when threatened with heavy weather, while under tow, is about __________.
  49. #3420 The initial tension set in the mooring system of a MODU establishes the __________.
  50. #3421 In case of damage to the DEEP DRILLER on location, the immediate objective is to reduce the unexpected inclination and return the unit to __________.
  51. #3422 Under extremely heavy weather on the DEEP DRILLER, when operating conditions are too severe to permit the drill string from being tripped out of the h...
  52. #3423 In anticipation of heavy weather, it is decided to deballast the DEEP DRILLER to survival draft. The marine riser should be disconnected, pulled, and...
  53. #3424 Why are symmetric mooring patterns frequently used to keep MODU's on station?
  54. #3425 Using high working tensions in the mooring system reduces the __________.
  55. #3426 The motion that can significantly increase mooring line tension is __________.
  56. #3427 Given the same water depth and line tension, the holding power of a 19 pound/foot wire rope mooring system in comparison to the holding power of a 90...
  57. #3428 Given the same water depth and mooring tension, the holding power of a 90 pound/foot chain mooring system in comparison to the holding power of a 19 p...
  58. #3429 Given the same water depth and line tension, the length of the ground cable of a 90 pound/foot mooring chain compared to the length of the ground cabl...
  59. #3430 Given the same water depth and line tension, the catenary length of a 90 pound/foot mooring chain in comparison to the catenary length of a 19 pound/f...
  60. #3431 Consideration should be given in planning for the mooring orientation in a new location so that in adverse weather a crane is available to off-load th...
  61. #3432 A weight of 1,000 kips is equivalent to __________.
  62. #3433 The COASTAL DRILLER is experiencing a single amplitude roll angle of 3 degrees and a roll period of 10 seconds. What is the maximum water depth that c...
  63. #3434 While in 150 feet water depth when the pitch angle of the COASTAL DRILLER is 1 degree, the platform pitch period for going on location should be longe...
  64. #3435 Leg penetration to depths which require pullout forces greater than that which can be supplied by the buoyancy of the hull may exist in __________.
  65. #3436 Scouring is the result of __________.
  66. #3437 When a marine surveyor is employed to assist in the move of a mobile offshore drilling unit, he __________.
  67. #3438 In securing deck loads for an ocean tow, drill pipe should be __________.
  68. #3439 When cargo aboard a jack-up in transit becomes adrift, the tow vessel should be asked to __________.
  69. #3440 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...
  70. #3441 The full period of motion of the DEEP DRILLER while tripping is 7 seconds and the maximum pitch angle as seen on the inclinometers is 4°. From the sta...
  71. #3442 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 exper...
  72. #3443 Among the possible causes of unexpected rapidly increasing inclination of the DEEP DRILLER while in transit is __________.
  73. #3444 While being towed at a 19.5 foot draft, the DEEP DRILLER experiences single amplitude pitching of 7.5 degrees with an 8 second period. You should ____...
  74. #3445 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 __________.
  75. #3446 When floating, the appropriate leg horizontal must be aligned in the center of the __________.
  76. #3447 The primary purpose for using stud link chain in a mooring system on a rig is the __________.
  77. #3448 When anchoring in an area with a soft bottom, the fluke angle of an anchor should be set at __________.
  78. #3449 What are the two main types of stud link chain?
  79. #3450 Which grade of anchor chain is generally used on floating drilling vessels?
  80. #3451 Extended cyclical variations in tensions will cause an anchor chain to break due to __________.
  81. #3452 Prior to magnetic particle inspection of anchor chain, the chain should be __________.
  82. #3453 Grinding to eliminate shallow surface defects should be done __________.
  83. #3454 The American Petroleum Institute recommends magnetic particle inspection for __________.
  84. #3455 The American Petroleum Institute recommends that connecting links and anchor shackles be inspected using __________.
  85. #3456 A link on an anchor chain should be replaced when wear or grinding of surface cracks has reduced the cross section area by __________.
  86. #3457 When inspecting anchor chain, the American Petroleum Institute recommends checking the length over 5 links every __________.
  87. #3458 The American Petroleum Institute recommends that a new anchor chain should be inspected after being in service for __________.
  88. #3459 A measurement device for inspecting anchor chain is the __________.
  89. #3460 The maximum angular tolerance for a bent link of an anchor chain is __________.
  90. #3461 The chemicals in sacks aboard MODU's are palletized to reduce __________.
  91. #3462 At a refueling area or fuel facility, smoking or any flame or spark is prohibited __________.
  92. #3463 A helicopter making a round trip from a helodeck with refueling capabilities to an unmanned platform will take 45 minutes each way. The helicopter sho...
  93. #3464 The weight of the loaded personnel carrier, when transferring personnel from a MODU with a crane, must not exceed __________.
  94. #3465 When transferring personnel with a MODU crane, the weight of the loaded personnel carrier must not exceed __________.
  95. #3466 When hoisting personnel from a vessel, with the MODU cranes, the crane operator must assure that __________.
  96. #3467 When may a personnel net be used to bring heavy equipment aboard an offshore drilling unit?
  97. #3468 Before personnel are lifted from a vessel in a personnel basket, the vessel should be __________?
  98. #3469 The maximum number of personnel allowed on a personnel transfer basket is __________.
  99. #3470 When lowering a personnel basket to pick up personnel from a boat, the personnel basket should be __________.
  100. #3471 When using a crane for transferring personnel in a basket, the load hook must be equipped with a __________.

Deck General questions: what to expect

Q How many Deck General questions are in the Deck pool?

There are 5,775 Deck General questions on this site, every one released by the U.S. Coast Guard or taken from the National Maritime Center's sample examinations, with its correct answer. The exam draws its Deck General module from the same pool.

Q What score do I need to pass the Deck General module?

Most USCG exam modules, including Deck General, require 70 percent to pass. Rules of the Road modules require 90 percent.

Q Are these the real USCG Deck General exam questions?

Yes. They are the published U.S. Coast Guard questions, matched to the National Maritime Center's 2026 sample examinations. Answer any question to see the correct choice, the USCG reference and the illustration where the question uses one.

Other Deck modules

About the Deck question pool

The Deck pool holds the current U.S. Coast Guard questions for every deck credential, from Able Seaman and the OUPV six-pack up to unlimited Master. Each question is multiple choice with four options, graded instantly, with the USCG reference shown where one exists.