prevent the towboat from sliding when the rudder is moved
prevent the barges from spreading out when backing down
hold the towboat securely to the barges
prevent the sidewise movement of the face barges
第1题:
You are pushing a tow ahead,at high speed,near the right hand bank of a canal.The forces affecting your towboat and tow will tend to ______.
A.Push both the head of the tow and the stern of the towboat away from the right hand bank
B.Push the head of the tow away from,and pull the stern of the towboat into,the right hand bank
C.Pull both the head of the tow and the stern of the towboat into the right hand bank
D.Pull the head of the tow into,and push the stern of the towboat away from,the right hand bank
第2题:
When one upbound vessel is overtaking another vessel and both are pushing a tow ahead,what reaction may you expect ________.
A.Both towheads will tend to drift apart,and the overtaking vessel will be slowed down
B.Both towheads will tend to drift together,and the overtaking vessel will be slowed down
C.Both towheads will tend to drift apart,and the overtaken vessel will be slowed down
D.Both towheads will tend to drift together,and the overtaken vessel will be slowed down
第3题:
A place is moved from day into night and from night into day over and over by ______ of the earth.
A.the pushing B.the pulling C.the spinning D.the passing
第4题:
准备放艇。()
第5题:
Backstays are ______.
A.Running rigging leading aft from the masts
B.Running rigging leading forward from the masts
C.Standing rigging leading aft from the masts
D.Standing rigging from the cross trees to the mast head
第6题:
When attempting an upstream landing while pushing empty barges ahead in a hard onshore wind,the approach is best made ______.
A.With bow out,stern in
B.With bow in,stern out
C.Parallel to the dock,as close in as possible
D.Parallel to the dock,as far out as possible
第7题:
A towing vessel pushing a barge ahead and rigidly connected in a composite unit shall show the lights of ______.
A.A vessel towing by pushing ahead
B.A power-driven vessel,not towing
C.A barge being pushed ahead
D.Either answer A or answer B
第8题:
A large vessel is equipped with a controllable pitch propeller. Which statement is TRUE?
A.When dead in the water,it is often difficult to find the neutral position and slight headway or sternway may result
B.When going directly from full ahead to full astern,there is complete steering control
C.When the vessel has headway and the propeller is in neutral,there is no effect on rudder control
D.When maneuvering in port,full ahead or astern power can usually be obtained without changing shaft RPM
第9题:
材料:
When SEA EMPRESS was two or three cables from the Channel entrance,the pilot saw from the changing aspect of the Outer Leading Lights that there was a set to the east.He ordered a course change of 5° to port.The vessel,which was now closing with the Mid Channel Rocks Light Buoy,started to turn to port.The pilot saw the Outer Leading Lights close and then open to the east as the bows entered the channel.The Buoy was very close to starboard and the pilot now saw that the fixed red and fixed white lights of the Outer Leading Lights,the ones indicating the east side of the deepest water in the Channel entrance,were also open to the east.
After the bows had passed the Middle Channel Rocks Light to starboard there was a shuddering vibration,then a sound from the deck below of liquid being forced under pressure,accompanied by a strong smell of oil.The helmsman reported that the vessel was not steering and the pilot ordered&39; full astern&39;.The Chief Officer recorded this order and the vessel&39;s position,which was 1.4 cables northwest of Middle Channel Rocks Light.
SEA EMPRESS,which was trimming by the head and taking a starboard list,continued to run ahead as the main engine was on full astern.There were further main engine movements and the vessel finally lost all way after she grounded again in a position about 3.3 cables south-by-west of the Mill Bay Buoy.The main engine was put to &39;stop&39;.SEA EMPRESS was by this time significantly trimmed by the head and had taken an 18° list to starboard with the starboard fore part of the deck awash and was heading in a northwesterly direction.
问题:
The course of SEA EMPRESS,when entering the Channel entrance,was most likely in a direction of ______.
A.North
B.East
C.South
D.West
When SEA EMPRESS was grounded the second time,her smallest freeboard was on her ______.A.port side before mid section
B.port side after mid section
C.starboard side before mid section
D.starboard side after mid section
A conclusion can be drawn from this passage that SEA EMPRESS was grounded at about ______ hours(LT).A.0200
B.0900
C.1900
D.2200
“The pilot saw the Outer Leading Lights close and then open to the east as the bows entered the channel”.This indicates that ______.A.the front Leading Light appeared to move to the left of the rear Leading Light
B.the rear Leading Light appeared to move to the right of the front Leading Light
C.the front Leading Light appeared to move to the east of the rear Leading Light
D.the rear Leading Light appeared to move to the east of the front Leading Light
请帮忙给出每个问题的正确答案和分析,谢谢!
第10题:
Two tugs are helping the ship. One is pulling from forward, the other is ().