海船船员考试
单选题Which position includes the effects of wind and current（）.A Dead reckoning positionB Leeway positionC Estimated positionD Set position
题目
Dead reckoning position
Leeway position
Estimated position
Set position
参考答案和解析
相似问题和答案
第1题：
Solid green arrows on the main body of a pilot chart indicate ______.
A.prevailing wind directions
B.prevailing ocean current directions
C.probable surface current flow
D.shortest great circle routes
第2题：
If the current and wind are in opposite directions，the sea surface represents ______.
A.a greatly reduced wind speed
B.a higher wind speed than what really exists
C.a lower wind speed than what really exists
D.more turbulent winds
第3题：
The best time to work a boat into a slip is ______.
A.when the wind is against you
B.with the current setting against you
C.at slack water
D.with a cross current
船舶进出港地工作的最好时间是在平潮。
第4题：
A backing wind
A veering wind
Sustained gale force winds
A strong wind that maintains a constant speed and direction
第5题：
Which statement concerning current is TRUE ________．
A.Current can be determined by measuring the direction and distance between simultaneous EP and DR positions
B.The drift of the current should be averaged out on a one hour basis
C.After the current is determined，it should not be used for further plotting because it is an unknown variable
D.The distance between a simultaneous DR position and fix is equal to the drift of the current
第6题：
If the current and wind are in the same direction，the sea surface represents a wind speed ______.
A.lower than actually exists
B.higher than actually exists
C.that actually exists
D.that has no proportional relationship
第7题：
All the following is true except that ______．
A.in many places a counter current flows in opposition to the main current close to the bank
B.current can vary with depth of water and large deep draught ships can experience different current effects at differing parts of the hull tend to turn to the wind
C.as speed is reduced，the increased proportion of the ship's vector which is attributable to current will set the ship close to obstructions
D.when close to the berth in a head current，there is a danger that flow inshore of the ship becomes restricted and the ship is subject to interactive forces
第8题：
The navigational term Set of current means ______.
A.velocity of current in knots
B.direction from which the current flows
C.estimated current
D.direction toward which the current flows
航海中术语流向的意思是流水流去的方向。
第9题：
For determining the amount of chains used in anchoring operation, which one of the following factors would’t be considered?______.
A.selection of landmarks
B.character of sea bottom
C.strength of current and wind force
D.radius of ship swing to wind or tide
在锚泊操作中确定锚链的长度，以下哪一项不被考虑？陆标的选择
第10题：
in many places a counter current flows in opposition to the main current close to the bank
current can vary with depth of water and large deep draught ships can experience different current effects at differing parts of the hull tend to turn to the wind
as speed is reduced，the increased proportion of the ship's vector which is attributable to current will set the ship close to obstructions
when close to the berth in a head current，there is a danger that flow inshore of the ship becomes restricted and the ship is subject to interactive forces