Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR

USCG General Navigation (Set 59)

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Question 1 of 30

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Question 1 of 30

You are ascending a river and exchanging navigational information via radiotelephone with a descending vessel. If the descending vessel advises you to "watch for the set" above point X, what would you expect to encounter above point X?

Browse Questions in Set 59

30 MCQs

#1 You are ascending a river and exchanging navigational information via radiotelephone with a descending vessel. If the descending vessel advises you to "watch for the set" above point X, what would you expect to encounter above point X? #2 The place where a channel moves from along one bank of the river over to the other bank of the river is called a __________. #3 A current moving across a lock entrance toward the river or toward the dam is called a(n) __________. #4 The controlling depth of the river is __________. #5 The "head of the bend" is the __________. #6 What term is used to describe a river barge designed to carry coal or any similar cargo not requiring weather protection? #7 What term is used to describe a tank barge constructed with the structural framing inside the cargo tank and the side shell plating containing the cargo? #8 When one upbound vessel is overtaking another vessel and both are pushing a tow ahead, what reaction may you expect? #9 When pushing a tow and approaching barges tied off to the shore, you should __________. #10 You are pushing a tow ahead and passing close to another towboat which is pushing ahead in the same direction (you are overtaking). After the towheads pass close alongside __________. #11 A towboat has the same draft as the barges it is pushing ahead. If the distance from the stern of the towboat to the head of the tow is 800 feet, where is the approximate location of the pivot point of the unit? #12 Where is the pivot point of a towboat with a tow ahead? #13 When steering a tow downstream around the shape of a sand bar, and staying on the proper side of the buoys, an operator should be cautious of __________. #14 The lockmaster has given you permission to tie off on the lower guide wall to wait your turn to lock through. What should you be most concerned with? #15 What is used to help prevent damage to barges, locks, and landings when you are locking or landing a tow? #16 A line of position from a celestial observation is a segment of a __________. #17 You are on course 312°T. To check the speed of your vessel you should observe a celestial body on which bearing? #18 You are on course 042°T. To check the course of your vessel you should observe a celestial body on which bearing? #19 You are on course 146°T. To check the speed of your vessel you should observe a celestial body on which bearing? #20 You are on course 201°T. To check the speed of your vessel you should observe a celestial body on which bearing? #21 You are on course 238°T. To check the course of your vessel you should observe a celestial body on which bearing? #22 You are on course 303°T. To check the speed of your vessel you should observe a celestial body on which bearing? #23 You are on course 061°T. To check the longitude of your vessel you should observe a celestial body on which bearing? #24 You are inbound in a channel marked by a range. The range line is 309°T. You are steering 306°T and have the range in sight as shown in illustration D047NG below. The range continues to open. What action should you take? #25 A latitude line will be obtained by observing a body __________. #26 While steering a course of 150°T, you wish to observe a body for a latitude check. What would the azimuth have to be? #27 While steering a course of 150°T, you wish to observe the Sun for a speed check. What would the azimuth have to be? #28 A star is observed at lower transit. The line of position derived from this sight is __________. #29 You are on course 138°T. To check the latitude of your vessel you should observe a celestial body on which bearing? #30 What is NOT an advantage of the rhumb line track over a great circle track?

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