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单选题
Sidewise force of the propeller tends to throw a vessel’s stern to the right or left,depending on rotation. This force is caused by().
A
back current from the rudder
B
greater pressure on the right or left side of the propeller,depending on rotation
C
lower pressure on the right or left side of the propeller,depending on rotation
D
torque from the velocity and angle at which the surrounding water impinges upon the propeller blades
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更多 “单选题Sidewise force of the propeller tends to throw a vessel’s stern to the right or left,depending on rotation. This force is caused by().A back current from the rudderB greater pressure on the right or left side of the propeller,depending on rotationC lower pressure on the right or left side of the propeller,depending on rotationD torque from the velocity and angle at which the surrounding water impinges upon the propeller blades” 相关考题
考题
A tug is to assist in docking an oceangoing vessel on a hawser. The greatest danger to the tug is ______.A.from the ship's propeller when making up aftB.from being overrun if making up forwardC.hull damage while alongside passing a hawserD.getting in a tripping position
考题
Upon underwater detection,there were no apparent defects on the bottom plates,bilge keels,rudder and propeller of the said vessel.This kind of wording usually appeared on ______.A.ship surveyor's reportB.a ship's certificateC.a cargo inspection reportD.a diver survey report
考题
The force exerted by a propeller which tends to throw the stern right or left is called ______.A.slipB.sidewise forceC.rotational forceD.thrust
考题
Which of the following would be considered downflooding on a fishing vessel as defined in regulation?A.Vessel heels until water enters a hatchB.Vessel in collision floods through a damaged area above the waterlineC.Vessel takes on water due to the hatches being left open in heavy rainD.Vessel takes on water by the propeller shaft due to failure of the stern gland
考题
While your vessel is docked port side to a wharf,a sudden gale force wind causes the vessel's stern lines to part. The stern begins to fall away from the dock,and no tugs are immediately available. Which measure(s) should you take FIRST?A.Notify the engineroom of the need for propulsionB.Shut down any cargo transfer that's in progressC.Let go the port anchor and veer to a short scope of chainD.Obtain assistance from the terminal to put new stern lines out
考题
On a vessel with a single propeller,transverse force has the most effect on the vessel when the engine is put ______.A.full aheadB.full asternC.half aheadD.slow astern
考题
The Vessel not to be ______ to force ice,but to follow ice-breaker if required.A.MadeB.ContainedC.SuppliedD.Obliged
考题
Flanking rudders effect a vessel’s heading because of the ______.A.effect of the propeller flow on the ruddersB.water flow due to the vessel’s movement through the waterC.tunnel affect of the water flow past opposing ruddersD.discharge current being channeled to impinge on the vessel’s deadwood
考题
In relation to the turning circle of a ship, the term kick means the distance ______.A.around the circumference of the turning circleB.gained at right angles to the original courseC.gained in the direction to the original courseD.or throw of a vessel’s stern from her line of advance upon putting the helm hard over
考题
单选题While your vessel is docked port side to a wharf,a sudden gale force wind causes the vessel’s bow lines to part.The bow begins to fall away from the dock,and no tugs are immediately available.Which measure(s)should you take FIRST().A
Call the Master and the deck gangB
Slip the stern lines,let the vessel drift into the river,and then anchorC
Let go the starboard anchorD
Obtain assistance and attempt to put some new bow lines out
考题
单选题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 resultB
When going directly from full ahead to full astern,there is complete steering controlC
When the vessel has headway and the propeller is in neutral,there is no effect on rudder controlD
When maneuvering in port,full ahead or astern power can usually be obtained without changing shaft RPM
考题
单选题0n a single-screw vessel the stern frame().A
furnishes support to the rudder, propeller shaft, and transom frameB
provides foundations for after mooring winchesC
provides foundation for the main propulaion enginesD
transfers the driving force of the propller to the hull
考题
单选题On a single-screw vessel the stern frame().A
furnishes support to the rudder,propeller shaft,and transom frameB
provides foundations for after mooring winchesC
provides foundations for the main propulsion enginesD
transfers the driving force of the propeller to the hull
考题
单选题A single-screw vessel going ahead tends to turn more rapidly to port because of propeller().A
discharge currentB
suction currentC
sidewise forceD
thrust
考题
单选题The force exerted by a propeller which tends to throw the stern right or left is called().A
slipB
sidewise forceC
rotational forceD
thrust
考题
单选题When a vessel is inclined by an external force,the().A
shape of the vessel's underwater hull remains the sameB
vessel's center of gravity shifts to the center of the vessel's underwater hullC
vessel's center of buoyancy shifts to the center of the vessel's underwater hullD
vessel's mean draft increases
考题
单选题A tug is to assist in docking an oceangoing vessel on a hawser. The greatest danger to the tug is ().A
from the ship's propeller when making up aftB
from being overrun if making up forwardC
hull damage while alongside passing a hawserD
getting in a tripping position
考题
单选题Flanking rudders effect a vessel’s heading because of the().A
effect of the propeller flow on the ruddersB
water flow due to the vessel's movement through the waterC
tunnel affect of the water flow past opposing ruddersD
discharge current being channeled to impinge on the vessel's deadwood
考题
单选题The internal force of a material, which tends to resist deformation when subjected to external forces, is known as ().A
stressB
strainC
shear strengthD
ultimate tensile strength
考题
单选题Upon underwater detection, there were no apparent defects on the bottom plates, bilge keels,rudder and propeller of the said vessel. This kind of wording usually appeared on().A
ship surveyor's reportB
a ship's certificateC
a cargo inspection reportD
a dive survey report
考题
单选题Inspection of a vessel’s propeller during dry-dock should include ()A
noting the condition of the fairwaterB
inspection of the keywayC
logging inspection results in the official deck logD
all of above
考题
单选题The Plimsoll mark on a vessel is used to().A
align the vessel's tailshaftB
determine the vessel's trimC
determine the vessel's freeboardD
locate the vessel's centerline
考题
单选题By which of the following means is force efficiently provided to vary the pitch of the blades on a modem controllable pitch propeller?()A
HydraulicB
MechanicalC
PneumaticD
Electrical
考题
单选题When a vessel has positive stability,the distance between the line of force through B and the line of force through G is called the().A
metacentric heightB
righting armC
righting momentD
metacentric radius
考题
单选题The directive force of a gyrocompass().A
increases with latitude,being maximum at the geographic polesB
decreases with latitude,being maximum at the geographic equatorC
is greatest when a vessel is near the Earth's magnetic equatorD
remains the same at all latitudes
考题
单选题While your vessel is docked port side to a wharf,a sudden gale force wind causes the vessel’s stern lines to part. The stern begins to fall away from the dock,and no tugs are immediately available. Which measure(s) should you take FIRST?()A
Notify the engineroom of the need for propulsionB
Shut down any cargo transfer that's in progressC
Let go the port anchor and veer to a short scope of chainD
Obtain assistance from the terminal to put new stern lines out
考题
单选题On a vessel with a single propeller,transverse force has the most effect on the vessel when the engine is put().A
full aheadB
full asternC
half aheadD
slow astern
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