航海英语题库 船舶操纵.docx

船舶操纵08.1 船舶操纵基本知识2151When a vessel navigates in an area with a small underkeel clearance but with adequate space to take avoiding action she _. A. should not be regarded as a vessel constrained by her draught B. should be regarded as a vessel constrained by her draught C. shall be regarded as a vessel restricted in her ability to maneuver D. should be regarded as a non-displacement vessel KEY: A2152When towing astern，one way to reduce yawing of the tow is to _. A. trim the tow by the stern B. trim the tow by the head C. have the tow on an even keel D. list the tow on the side it is yawing KEY: A2153While moving ahead，a twin-screw ship has an advantage over a single-screw ship because _. A. correct trim will be obtained more easily B. drag effect will be cancelled out C. side forces will be eliminated D. speed will be increased KEY: C2154A racetrack turn would be better than a Williamson turn in recovering a man overboard if _. A. the man has been missing for a period of time B. the sea water is very cold and the man is visible C. there is thick fog D. the wind was from astern on the original course KEY: B2155A reaching course is one in which the wind _. A. comes directly over the bow B. comes directly over the stern C. comes over an area extending from broad on the bow to the quarter D. has no effect on the vessel KEY: C2156A towing vessel becomes tripped while towing on a hawser astern. What factor is MOST important when assessing the risk of capsizing? A. Length of the towline B. Height of the towline connection C. Longitudinal position of the towline connection D. Direction of opposing force KEY: B2157A twin screw vessel，making headway with both engines turning ahead，will turn more readily to starboard if you _. A. reverse port engine，apply right rudder B. reverse port engine，rudder amidships C. reverse starboard engine，apply right rudder D. reverse starboard engine，rudder amidships KEY: C2158A twin-screw ship going ahead on the starboard screw only tends to move _. A. in a straight line B. to port C. from side to side D. to starboard KEY: B2159A twin-screw vessel can clear the inboard propeller and maneuver off a pier best by holding a(n) _. A. forward spring line and going slow ahead on the inboard engine B. after spring line and going slow astern on the outboard engine C. forward spring line and going slow ahead on both engines D. forward spring line and going slow ahead on the outboard engine KEY: D2160A twin-screw vessel is easier to maneuver than a single-screw vessel because the twin-screw vessel _. A. permits the rudder to move faster B. generates more power C. can turn without using her rudder D. can suck the water away from the rudder KEY: C2161A vessel fitted with twin screws is easier in _ than a vessel with single screw A. turning maneuver B. course setting C. position fixing D. regulating speed KEY: A2162A vessel is considered to be restricted in her ability to maneuver under the Rules if she is _. A. at anchor B. mine-clearing C. engaged in fishing D. engaged in towing KEY: B2163A vessel is equipped with a single right-handed screw. With rudder amidships and calm wind，the vessel will most likely back _. A. straight astern B. to port C. to starboard D. in no particular direction KEY: B2164A vessel that is dead in the water on an even keel with most of her superstructure forward will lay _. A. AWith the wind abaft the beam or on the stern B. BWith the wind on the beam C. CWith the wind on the bow D. DWith the wind dead ahead KEY: 主2165A vessel towing astern in an operation which severely restricts the towing vessel and her tow in their ability to change course shall，when making way，exhibit _. A. the masthead lights for a towing vessel B. the lights for a vessel restricted in its ability to maneuver C. sidelights，sternlight and towing light D. All of the above KEY: D2166A vessel travelling down a narrow channel，especially if the draft is nearly equal to the depth of the water，may set off the nearer side. This effect is known as _. A. smelling the bottom B. squatting C. bank suction D. bank cushion KEY: D2167A vessel which through some exceptional circumstance is unable to maneuver as required by these Rules and is therefore unable to keep out of the way of another vessel is called _. A. a vessel restricted in her ability to maneuver B. a vessel not under command C. a vessel engaged in fishing D. a vessel constrained by her draught KEY: B2168A vessel，which is unable to maneuver due to some exceptional circumstance，shall exhibit _. A. during the day，three balls in a vertical line B. during the day，three shapes，the highest and lowest being balls and the middle being a diamond C. when making way at night，two all-round red lights，sidelights，and a sternlight D. when making way at night，masthead lights，sidelights，and a sternlight KEY: C2169Apparent wind speed blowing across a vessel under tow can be measured by a(n) _. A. barometer B. wind vane C. anemometer D. thermometer KEY: C2170As a ship moves through the water，it drags with it a body of water called the wake. The ratio of the wake speed to the ships speed is called _. A. propeller velocity B. speed of advance C. wake distribution D. wake fraction KEY: D2171As a vessel falls off the wind from close-hauled to a beam reach，the tendency for the vessel to move sideways through the water will _. A. increase B. decrease C. change only if the vessel comes about on the opposite tack D. not change KEY: B2172At night，a vessel shall indicate that she is restricted in her ability to maneuver by showing in a vertical line two _. A. red lights B. red lights and two white lights C. red lights with a white light in between D. white lights with a red light in between KEY: C2173Besides saving distance along the track line，another advantage of the Scharnow Turn over the Williamson Turn in a man overboard situation because _. A. it is faster B. it can be used in both the immediate action and the delayed action situations C. in fog，if the turn is started as soon as the man goes over，the vessel will be at the point where he went over when the turn is completed D. it returns the vessel to the original track line on a reciprocal course KEY: A2174Catenary as applied to tow lines denotes the _. A. dip of the line B. stretch of the line C. strain on the line D. length of the line KEY: A2175Changing direction by bringing the stern of the vessel through the eye of the wind is known as _. A. jibing B. running before the wind C. tacking D. reefing KEY: 2176For the deepest water when rounding a bend in a river，you should navigate your vessel _. A. toward the inside of the bend B. toward the outside of the bend C. toward the center of the river just before the bend，then change course for the rivers center after the bend D. in the rivers center KEY: B2177How does the effect known as bank suction act on a single-screw vessel proceeding along a narrow channel? _. A. It pulls the bow toward the bank. B. It pushes the entire vessel away from the bank. C. It pulls the stern toward the bank. D. It heels the vessel toward the bank. KEY: C2178If a towing vessel and her tow are severely restricted in their ability to change course，they may show lights in addition to their towing identification lights. These additional lights may be shown if the tow is _. A. pushed ahead B. towed alongside C. towed astern D. Any of the above KEY: D2179If a vessel under tow starts jumping on its tow line，the most appropriate action to alleviate the condition is to _. A. change course B. slow down C. heave to D. adjust tow line length KEY: D2180If the towing bridle legs are not of equal length _. A. excessive strain is placed on the shorter leg B. the shorter leg may fail C. the longer leg is slack D. All of the above KEY: D2181If the towline parts，you should _. A. start towing by pushing ahead B. abandon the towing vessel C. retrieve the tow bridle D. relieve strain on the retrieving line KEY: C2182If you are the stand-on vessel in a crossing situation，you may take action to avoid collision by your maneuver alone. When may this action be taken? _. A. At any time you feel it is appropriate B. Only when you have reached extremis C. When you determine that your present course will cross ahead of the other vessel D. When it becomes apparent to you that the give-way vessel is not taking appropriate action KEY: D2183In a following sea，a wave has overtaken your vessel and thrown the stern to starboard. To continue along your original course，you should _. A. use more right rudder B. use more left rudder C. increase speed D. decrease speed KEY: A2184In ballasting to survival draft，while in transit，due to extreme wind and wave loads，thrusters or propulsion，if available，should be used to _. A. reduce windward mooring tensions B. maintain vessel heading C. maximize accelerations D. increase speed of advance KEY: B2185In order for a vessel to be engaged in fishing she must be _. A. underway B. using gear which extends more than 50 meters outboard C. using a seine of some type D. using gear which restricts her maneuverability KEY: D2186In order to back a right-handed，single-screw vessel in a straight line，you will probably need to use _. A. very little rudder B. some left rudder C. some right rudder D. full left rudder KEY: C2187In towing it is desirable for the tug and the vessel to ride wave crests simultaneously because _. A. shock loading on the tow line is reduced B. towing speed is improved C. the vessel is more visible from the tug D. the catenary of the tow line is reduced KEY: A2188In towing，heaving lines are used for _. A. passing a tow bridle to the tug B. passing a messenger line C. heaving in the tow bridle D. service lines with rocket line throwers KEY: B2189In twin-screw engine installations while going ahead，maneuvering qualities are most effective when the tops of the propeller blades both turn _. A. to starboard B. outboard from the center C. to port D. inboard toward the center KEY: B2190It is easier to dock a right-hand，single-screw vessel _. A. starboard side to the wharf B. either side to the wharf C. port side to the wharf D. stern to the wharf KEY: C2191Most of your vessels superstructure is forward. How will the vessel lie when drifting with no way on? _. A. With the wind from ahead B. With the wind off the port beam C. With the wind off the starboard beam D. With the wind from abaft the beam KEY: D2192Once a towline is connected between the towing vessel and the disabled vessel，the towing vessel should _. A. not exceed bare steerageway during the transit B. take a strain as soon as you can to control the tow C. come up to speed very slowly and maintain a safe speed D. come up to speed quickly，then cut back power considerably to ease the strain KEY: C2193One advantage of chain over wire rope for a tow bridle is that chain _. A. is better suited for inland towing B. resists damage from chafing C. handles more easily D. equalizes towing forces better KEY: B2194One major advantage of the round turn maneuver in a man overboard situation is that it _. A. is the fastest method B. is easy for a single-screw vessel to perform C. requires the least shiphandling skills to perform D. can be used in reduced visibility KEY: A2195The best method to secure a tow line to a cleat is to _. A. take a turn around the cleat，then figure-eights，and a half-hitch B. make figure-eights，followed by a half-hitch，then a figure-eight knot C. take a turn，a half turn，and a figure-eight D. take several turns around the cleat only KEY: A2196The biggest problem you generally encounter while towing a single tow astern is _. A. the catenary dragging on the bottom B. swamping of the tow C. the tow tending to dive D. yaw KEY: D2197The catenary _. A. acts as a reserve length of towing hawser when the tug applies more power，and it dampens the surge effect of the tow B. gives an approximation of the amount of strain on the towing hawser C. is the dip in the towing hawser between the tug and the tow D. All of the above KEY: D2198The condition where a ship on the end of a tow line is riding a wave crest at the same time as its tug rides a wave crest is known as riding in _. A. synchronism B. harmony C. check D. step KEY: D2199The distance that a vessel travels from the time that the order to put engines full astern until the vessel is dead in the water is known as _. A. advance B. head reach C. surge D. transfer KEY: B2200The effect known as bank cushion acts in which of the following ways on a single-screw vessel proceeding along a narrow channel? A. It forces the bow away from the bank. B. It forces the stern away from the bank. C. It forces the entire vessel away from the bank. D. It heels the vessel toward the bank. KEY: A08.2 锚泊与靠离泊作业2201Your vessel has anchored in a channel known to have strong tidal currents To check your position you take a round of bearings，one of which is a range in line One hour later the bearing on the lights in range opens up This indicates the ship is _. A. swinging B. dredging her anchor C. taking bearings of the lights D. taking distances of the lights KEY: A2202Your 15-meter tug is underway and crossing a deep and narrow channel. A large container vessel is off your port bow on a steady bearing. Which statement is TRUE concerning this situation? _. A. You should maintain course and speed. B. The container vessel is the stand-on as it is the larger vessel. C. You are not to impede the safe passage of the container vessel in the channel. D. None of the above KEY: C2203A Danforth lightweight anchor does NOT hold well in which type of bottom? A. Mud B. Grass C. Sand D. Clay KEY: B2204A mooring line is described as being 6x24，1-3/4 inch wire rope. What do the above numbers refer to? A. Strands，yarns，circumference B. Strands，wires，diameter C. Wires，yarns，diameter D. Strands，circumference，wires KEY: B2205A mooring system that results in a spread system without anchor buoys is called a _. A. permanent chasing system B. wire rope mooring system C. shepherds crook mooring system D. spring buoy mooring system KEY: A2206A vessel brought alongside should be fended off the towing vessel by _. A. crew members using their arms B. crew members using the strong muscles of their legs C. fenders D. No fending is necessary due to the rugged construction of most towing vessels. KEY: C2207A vessel is wind rode when it is _. A. at anchor and heading into the wind B. backing into the wind C. carrying lee rudder D. necessary to apply a leeway correction to the course KEY: A2208A vessel moored with two anchors，sometimes，at an exposed roadstead to _. A. aid turning the ship B. obtain a fine bearing C. increase ship swings to wind or tide D. lighten the stress of anchor chains KEY: D2209After casting off moorings at a mooring buoy in calm weather，you should _. A. go full ahead on the engine(s) B. back away a few lengths to clear the buoy and then go ahead on the engines C. go half ahead on the engines and put the rudder hard right D. go half ahead on the engines and pass upstream of the buoy KEY: B2210An example of an anchor which has a stock is a _. A. Bruce anchor B. Dunn anchor C. Hook anchor D. LWT anchor KEY: D2211Anchoring and fishing in this area are _. A. danger B. dangerous C. dangerously D. dangering KEY: B2212Before letting the anchor go，you should check that the _. A. chain is clear B. anchor is clear of obstructions C. wildcat is disengaged D. All of the above KEY: D2213By paying out more anchor cable，you _. A. decrease the holding power of your anchor B. decrease the swing of your vessel while at anchor C. increase the holding power of your anchor D. increase the possibility that your vessel will drag anchor KEY: C2214Chafing gear should be placed _. A. at all wearing points of mooring lines B. at the bitter ends of all standing rigging C. around running rigging D. on wire rope only KEY: A2215Consideration 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 the supply vessel on what side of the unit? _. A. Weather side B. Leeward side C. Upwind side D. Crosswind side KEY: B2216During a storm，the chance of fatigue failure of a mooring line will increase as _. A. vessel motions increase B. mooring tensions decrease C. KG increases D. KG decreases KEY: A2217Galvanizing would not be suitable for protecting wire rope whic