Navigational Emergencies, Shiphandling and Maneuvering Flashcards
A “Mediterranean moor” should be used when _______.
when docking stern to a berth
A bow thruster : I. is effective in slowing down a vessel II. loses effectiveness when the vessel’s speed exceeds 3 knots III. provides lateral control without affecting headway
II and III only
A common occurrence when a vessel is running into shallow water is that:
squat will cause a decrease in bottom clearance and an increase in draft
A drift lead indicates that the vessel is dragging anchor when the line is ________.
taut and leading forward
A large vessel is equipped with a controllable pitch propeller. Which statement is true?
When dead in the water, it is often difficult to find the neutral position and slight headway or sternway may result
A person has fallen overboard and is being picked up with a lifeboat. If the person appears in danger of drowning, the lifeboat should make __________.
the most direct approach
A right handed single screw ship, when taking turning circle both port and starboard at same speed and rudder angles, which side will probably have the larger area of turn?
starboard side
A rule of thumb in the handling of VLCC is that, for every _____ degrees change in heading, she losses _____ of her headway.
90/ 25 - 30%
A ship is having a slow speed, by using the backing maneuver, the ship is considered to be dead on the water when the _____.
quickwater reaches the amidships
A ship is not turning around the center of gravity, but another point. What is this point called?
Pivot point
A ship is said to have a positive directional stability when:
she tends to steady up when the rudder turned to amidships position
A ship is turning around a point called the “pivot point”. What is the position of this invisible point when the ship is “dead” in the water?
About same position as the center of gravity
A ship under headway can make a smaller turning radius if the pivot is:
close to the bow
A single-screw vessel going ahead tends to turn more rapidly to port because of propeller _______.
sidewise force
A stream of water immediately surrounding a moving vessel’s hull, flowing in the same direction as the vessel is known as ________.
wake current
A twin screw vessel, making headway with both engines turning ahead, will turn more readily to starboard if you ________.
reverse starboard engine, apply right rudder
A twin-screw vessel can clear the inboard propeller and maneuver off a pier best by holding a(n) ______.
forward spring line and going slow ahead on the outboard engine
A twin-screw vessel is easier to maneuver than a single-screw vessel because the twin-screw vessel ______________.
can turn without using her rudder
A twin-screw vessel with a single rudder is making headway. The engines are full speed ahead. There is no wind or current. Which statement is FALSE?
Turning response by use of the rudder only is greater than on a single-screw vessel.
A vessel in shallow water might experience:
squatting
A vessel is docked portside to a lock. Which of the following would be the best way to undock a vessel off a lock with no wind?
cast off all lines aft, then all lines forward, left rudder, bow thruster to starboard, dead slow ahead
A vessel is equipped with a single right-handed screw. With rudder amidships and calm wind, the vessel will most likely back _____________.
to port
A vessel is equipped with twin propellers, both turning outboard with the engines half ahead. If there is no wind or current and the rudders are amidships, what will happen?
The vessel will steer a fairly straight course
A vessel is tide rode when it is _______?
at anchor and stemming the current
A vessel reduce speed without backing. The rate that her speed through the water decreases depends primarily on the ______.
vessel’s displacement
A vessel towing with a total length of 1350 meters, expecting strong wind from starboard side. The towing wire is connected 20 meters from towing vessels stern rail. What is to be done?
Secure the wire all way aft, to prevent wire moving out of center
A vessel will “squat” when it proceeds underway ______.
in all depths of water
A VLCC(100,000 DWT + ) with a 30,000 shaft horsepower steam turbine is slow to respond to engine movements and has less stopping power than normal ships because it has a:
bigger propeller
A wedge of water building up between the bow and nearer bank forces the bow out and away describes:
bank cushion
Adequate horsepower is of great importance when a ship is navigating independently in ice. Adequate horsepower is generally considered to exist when the horsepower to length ratio is at least ________.
6 to 1 or better
After casting off moorings at a mooring buoy in calm weather, you should ______.
back away a few lengths to clear the buoy and then go ahead on the engines
An execution by swinging out the ship with maximum wheel either port or starboard and subsequently reversing the wheel so that the ship’s head swings out to, but not beyond 60° from the original course; then continue to swing back with full wheel, finally steadying on the reciprocal course to original. This execution is called:
Williamson Turn
As a general rule, a ULCC should not have a speed in any direction greater than what speed when touching berth?
0.10 knots
As a general rule, a VLCC should not have a speed in any direction greater than what speed when touching berth?
0.15 knots
As a general rule, for most large merchant vessels, squat effects what part of the vessel?
bow
As a rule, ships of most configurations, when drifting in calm water with negligible current, will lie _______.
beam to the wind
As a ship moves through the water, it causes a wake, which is also moving forward relative to the sea. In addition to a fore and aft motion, this wake also has a (n) _______.
upward and inward flow
As a ships moves through the water , it drags with it a body of water called the wake. The ratio of the wake speed to the ship’s speed is called_________
wake fraction
As the propeller turns, voids are formed on the trailing and leading edges of the propeller blades causing a loss of propulsive efficiency, pitting of the blades, and vibration. These voids are known as _________.
cavitation
Basic signals and maneuvers are common in any ports of the world, in these case ports of USA. The use of ship’s whistle to communicate with tug(s),one long blast means:
Come ahead full slow
Before entering an ice area, the ship should be _______.
trimmed down by the stern
Bow or aft thrusters are sometimes preferable than tugs because:
it is always available
Conditions for crossing a rough bar are usually best at ______.
high water slack
Do you think a ship’s trim has any influence an steering abilities?
Yes, the ship usually steer better if trimmed by the stern
Do you think there is any reduction in the rudder lift force if the propeller is stopped?
Yes, the lift force will be dramatically reduced
During a double banking operation the off-take or smaller vessel generally provides the moorings. If wires are used it is recommended that rope tails are fitted onto the ends of the wires. This is to:
All the listed alternatives
During a mooring operation whilst underway it is recommended that, with one ship maintaining a constant course and speed, the other maneuvers so that:
The maneuvering vessel presents her port side to the constant direction vessel
Find the scope of an anchor cable with eight shackles paid out in a depth of 25 meters.
8.7
Find the scope of an anchor cable with eight shackles paid out in a depth of 96 feet.
7.5
Find the scope of an anchor cable with five shackles paid out in a depth of 67 feet.
6.7
Find the scope of an anchor cable with four shackles paid out in a depth of 11 meters.
ten
Find the scope of an anchor cable with four shackles paid out in a depth of 36 feet.
ten
Find the scope of an anchor cable with six shackles paid out in a depth of 72 feet.
7.5
Find the scope of an anchor cable with six shackles paid out in a depth of 77 feet.
seven
Find the scope of an anchor cable with three shackles paid out in a depth of 45 feet.
six
Flanking rudders effect a vessel’s heading because of the ______.
effect of the propeller flow on the rudders
For a right handed single screw vessel it is easier to berth ______.
port side to the wharf
For operations in pack ice, a vessel should ______.
have a drag of not more than 2 to 3 feet
For the deepest water when negotiating a bend in a river, you should always navigate your vessel:
toward the outside bend of the river
For the deepest water when rounding a bend in a river, you should navigate your vessel ______.
toward the inside of the bend
For which type of vessel is sinkage most pronounced?
High block coefficient vessel
For which type of vessel is squatting most pronounced?
Vessel with a high block coefficient
Generally, you can best keep a vessel under steering control when the vessel has ________.
headway
Good seamanship while towing in heavy weather requires all of the following EXCEPT ____________.
streaming all of your towing hawser
Handling a ship in a channel, a Pilot should break a sheer in narrow channel by:
increasing engine RPM
How can you minimize the squat effect?
Decrease in draft to the point on your ship which is closest to the bottom
How do we define the location of the “pivot point”?
The point where the sideways motion of the ship’s centerline is zero
How do you consider the indicated speed for berthing?
too fast
How does a vessel’s rate of turn change when entering shallow water?
there is no change
How is shallow water effect felt in a vessel?
The vessel becomes sluggish in responding to the rudder
How many fathoms are in a shot of anchor cable?
15
How many fathoms are there in 2 shots of anchor chain?
30
How many fathoms are there in 3 shots of anchor chain?
45
How many feet are there in 4 shots of anchor chain?
360
How many feet are there in five shots of anchor chain?
450
How many feet are there in one shot of anchor chain?
90
How many turns of wire normally mark either side of the shackle 105 fathoms from the anchor?
7 turns
How many turns of wire normally mark either side of the shackle 120 fathoms from the anchor’s
8 turns
How many turns of wire normally mark either side of the shackle 45 fathoms from the anchor?
3 turns
How will you define “squat”?
Increase in draft to the point on your ship which is closest to the bottom
How will you turn a ship quickly in a following current to make her stern the current in restricted water?
by dragging one anchor and astern engine
If a crewmember has fallen overboard during the hours of darkness and you immediately execute a Williamson turn, what is the primary advantage of this maneuver under these circumstance exams?
You will be in a reciprocal course and nearly on the track line run during the night
If a double banking operation is being conducted with one ship at anchor (which is yawing due to weather condition) and one tug is available for assisting in the operation, the tug should:
Endeavour to hold the anchored/yawing vessel steady
If a nylon mooring rope gets wet by immersion in water it undergoes:
A decrease in strength of 20%
If a ship of 15,000 tons deadweight fitted with steam turbine has an astern power of 60,000 knot-tons, what is the speed of the ship?
12 knots
If a VLCC is proceeding at 12 knots, her headway is reduced to what speed at the completion of a round turn even though the engine continues to run ahead of steerageway?
2 to 3 knots
If the speed of a ship is increased during a turn, the tactical diameter becomes (or remains):
smaller
If your propeller is racing in rough weather, you should _______.
decrease your engine speed
In a following sea, a wave has overtaken your vessel and thrown the stern to starboard. To continue along your original course, you should _______.
use more left rudder
In an emergency and the anchor is dropped while at full ahead, do not slack the cable as soon as the anchor holds.
FALSE
In an emergency and the anchor is dropped while at full ahead, do not slack the cable as soon as the anchor holds.
TRUE
In anchoring against a strong current or tidal stream, the anchor should be let-go in order to keep her head-to-stream. Best precautions during let-go is:
Engine stopped and gradually paid out cables
In anchoring, using the scope of 6, determine the number of shackles to be used if the depth of water is 35 meters?
7.5 shackles
In docking, when approaching the berth at one knot, how many meters is the ship’s advance in one minute?
31 meters
In maneuvering the ship in a restricted area or in a narrow channel by executing backing and filling maneuver, which side would be easier to maneuver the ship?
starboard side
In maneuvering the ship in a restricted area or in a narrow channel, which side would be easier to maneuver the ship using the backing and filling maneuver?
starboard side
In most cases, when a large merchant vessel enters shallow water at high speed the ______.
bow will squat farther than the stern
In order to back a right-handed, single -crew vessel in a straight line, you will probably need to use _______.
some right rudder
In order to reduce your wake in a narrow channel you should _______.
reduce your speed
In principles of shiphandling, which factor that a master or a pilot has no direct control of the ship?
shallow water factor
In relation to the turning circle of the ship, the term “advance” means the distance:
gained in the direction of the original course and maximum when ship turned 90°
In ship handling in shallow water, you will notice that the water is boiling up around the _____.
vessel’s stern
In ship handling on ice, there are differentiation among ice formation. The initial stage in the freezing of sea water, when it assumes a greasy appearance and a scum of ice crystals is formed on the surface, is referred to as:
sludge or slush
In ship handling with a following sea, a vessel will tend to _____.
yaw
In ship handling, as a general rule, if your vessel is drifting in calm waters with negligible current, the wind will maneuver your vessel until it strikes the vessel _______.
on or near the beam
In ship handling, as the beam increases for a given length, it is apparent that the directional stability:
decreases
In ship handling, as the under keel clearance decreases, it is apparent that the directional stability:
decreases
In ship handling, how will the vessel lie relative to the wind when drifting with no way on if it has most of its superstructure forward?
With the wind from abaft the beam
In ship handling, if you notice that you are racing your propeller in rough weather, you should:
decrease your engine speed
In ship handling, when you are turning a ship in restricted space, it is normally best to _____.
turn so that the tendency to back into the wind can be used if on a single-screw vessel
In ship handling, which of the following actions will reduce the yawing of a vessel in a following sea?
shifting weights to the stern
In ship handling, which of the following statements concerning the handling characteristics of a fully loaded vessel as compared with those of a light vessel is FALSE?
A fully loaded vessel will maintain her headway further
In ship handling, you notice that your rudder response has become sluggish and your speed has decreased. This are signs that you have:
entered shallow water
In shiphandling in heavy weather, you notice buckling in the midships deck plating of your vessel. To relieve the strain, you could _____.
all of these
In shiphandling in heavy weather you have your bow meeting the seas. To prevent pounding, you should _______.
decrease speed
In shiphandling in heavy weather you have your bow meeting the seas. Which measure should NOT be taken to reduce pounding?
Add ballast in the after peak
In shiphandling in heavy weather, you notice your vessel’s screw is being lifted clear of the water and racing. One way to correct this would be to _____.
decrease speed
In shiphandling, which action will reduce the yawing of the vessel in a following sea?
Shifting weights to the stern
In twin screw engine installation while going ahead, maneuvering qualities are most effective when the tops of the propellers blades both turn:
outboard from the center
In which situation could a vessel most easily capsize?
running in the trough
Insufficient space between the hull and bottom in shallow water will prevent normal screw currents resulting in ______.
All of the above
It is a particular professional knowledge regarding own ship various methods available and how to change over to secondary from primary methods. It is the knowledge on:
Steering and conning
It is a propeller which is almost invariably right-handed. When the ship is driven ahead, the propeller revolves in a clockwise direction, when viewed from astern. To go astern rotation of the propeller is reversed. It is _______.
single screw
It is applied to rudder when it has about one-third of its area forward of the rudder post:
balanced rudder
It is desirable, when mooring to a buoy, to approach the buoy with the current from ______.
Ahead
It is easier to dock a right-hand, single screw vessel ______.
port side to the wharf
It is the distance measured along the original line joining the position of the compass platform when the wheel is put over and the position when the ship has turned through any particular cycle is called _____.
distance to new curve
Leeway is the ______
lateral movement of a vessel downwind of her intended course
Man overboard situation is a critical “life and death” scenario. The most critical variable that has to be considered is: I. The fastest and correct turn of execution II. The decision, fast and shortest time of execution
Both I and II
Maneuvering with tug(s) in USA ports, LET GO tug lines is indicated on the ship’s whistle by:
One long blast and two short blast
Maneuvering with tug(s) in USA ports, TWO BLAST mean or indicate:
Back with normal power
Maximum rudder angle of 35 degrees is most acceptable during turning. However, an angle of 45 degrees will give a tighter turn, but will reduce speed more. At higher speed during turning, the ship tends to reduce the force of the rudder and in greater angle will reduce speed. This phenomenon is called:
burbling
Mooring with two bow anchors has which major advantage over anchoring with one bow anchor?
The radius of the vessel’s swing will be shortened
Most naval ships and some merchant vessels are fitted with steam turbines in which the astern power is equal to what part of the ahead power.
half
Normally a ship fitted with steam turbines has an astern power, one third of ahead power. If a ship is 7,000-ton deadweight with speed of 15 knots, what is the astern power?
35,000 knot - tons
On a single screw vessel, when coming portside to pier and being set off the pier you should:
make your approach at a greater angle than in calm water
On a single-screw vessel, when coming port side to a pier and being set off the pier, you should _______.
make your approach at a greater angle than in calm weather
On a twin-screw, twin-rudder vessel, the most effective way to turn in your own water, with no way on, is to put ______.
one engine ahead and one engine astern, with full rudder
On a vessel with a single propeller, transverse force has the most effect on the vessel when the engine is put ________.
full astern
On twin screw twin rudder vessel the most effective way to turn in your water with no way is to put:
one engine ahead and one engine stern with rudder amidships
Once a ship (equipped with self-towing auto tension winches) is moored alongside a loading or discharging berth, it is recommended that:
All winches be left with the manual brake on and gear out
One shackle of anchor chain is equal to how many meters?
27.4
One shackle of anchor chain is equivalent to how many fathoms?
15
One shackle of anchor chain is equivalent to how many feet?
90
Overshoot is an expression we use when talking about a ship’s steering ability . What is the best way to determine how the overshoot is on your ships
Do a 20/20 degrees zigzag maneuver
Rivers currents tend to ______.
cause the greatest depth of water to be along the outside of a bend
Shifting weight aft in heavy weather will reduce the tendency to yaw, but may increase the tendency to _______.
be pooped
Ships like VLCC’s turning circle to the right is usually _____ her turning circle to the left.
nearly the same as
The “full speed” connotation in the majority of publications on ice navigation refers to maximum speed of:
4 to 6 knots
The acceleration or deceleration capability of the ship depends largely on horsepower available and the momentum of the ship. The most important aspect of comparing the ahead and astern power of the ship is to consider first the:
Full-ahead momentum
The anchor chain should be kept moderately taut during a Mediterranean moor to ______.
prevent damage to the stern in the event of a headwind
The anchors should be dropped well out from the pier while at a Mediterranean moor to _______.
permit the ship to maneuver in the stream while weighing anchors
The anti-rolling device which reduce the amplitude the of roll by varying the amount of water in tanks on opposite side of the ship, is referred to as.
anti-rolling tanks
The best approach to an anchorage is: I. Against the current or wind II. With the current or wind III. A turn either way to give momentum for the dropping of anchor chain
I only
The best time to work a boat into a slip is _______.
at slack water
The bow thruster generally is ineffective at ______.
over 3 knots headway
The depth of water in the anchorage is expected to be 19 meters. Find how many shackles to be paid out if a scope of 3 is desired on the anchor chain.
2 shackles
The depth of water in the anchorage is expected to be 28 meters. Find how many shackles to be paid out if a scope of 7 is desired on the anchor chain.
7 shackles
The depth of water in the anchorage is expected to be 45 feet. Find how many shackles to be paid out if a scope of 6 is desired on the anchor chain.
3 shackles
The disadvantage of a bow thruster is:
it has no effect on headway to slow down or hold a ship
The distance a vessel moves at right angles to the original course, when a turn of 180° has been completed, is called the:
tactical diameter
The distance gained in the direction of the original course when you are making a turn is know as _______.
advance
The distance of the ship to its final berth is about 200 meters. How many minutes will it approximatelt take the ship to be in position if the ship speed is two knots?
3 minutes 12 seconds
The distance that a ship moves forward with each revolution of its propeller, if there is no ship, is called ________.
pitch
The distance that a vessel travels from the time that the order to put engine full astern until the vessel is dead on the water is known as:
head reach
The easiest way to anchor a vessel in a current is to _______.
stem the current and be falling aft very slowly when the anchor is dropped
The effect known as “bank cushion” acts in which of the following ways on a single-screw vessel proceeding along a narrow channel?
it forces the bow away from the bank
The effect known as “bank cushion” acts in which of the following ways on a single-screw vessel proceeding along in a narrow channel?
it pulls the stern toward the bank
The effect of wind in an exposed areas of a ship is most noticeable when the vessel is ______.
backing
The effects of shallow water with speed and rudder of the ship is great during maneuvering at high speed and become excessive is the depth is:
less than one-and-a half the draft
The forward movement of a vessel in one revolution of its propeller is measured by __________.
the pitch
The handling qualities of any particular class of vessel is based on the following except:
the skill and competence of ship handler
The helm command “meet her” means _______.
use rudder to check the swing
The helm command “shift your rudder” means _______.
change from right rudder to left rudder, or vice versa, an equal number of degrees
The maneuver which will return your vessel in the shortest time to a person who has fallen overboard is ______.
A single turn with hard rudder
The maximum rudder angle on your ships is 35% degrees. Do you think this is the angle that the ruder is most effective?
No, most effective rudder angle is about 25 to 30 degrees. This is because he rudder is “ stalling” at 35 degrees angle
The most favorable condition to encounter when dock your vessel is when the wind and current are:
parallel to the pier from ahead
The owner or Master of a towing vessel shall ensure that each person that directs and controls the movement of the vessel can accomplish all of the following except:
reduce speed only where local speed limits are posted
The pivoting point of a vessels going ahead is situated:
About one -third of the vessel’s length from the bow
The pivoting point of a fully loaded vessel with normal trim proceeding ahead at sea speed is:
one-third of the length of the vessel from the bow
The point at which helm must be applied to achieve a required course alteration is:
wheel over position
The proper way to approach a downstream lock where there is an out draft is to be _______.
close in to the land wall, keeping the stern in at all times
The rudder is hard over , full ahead in deep water . How much lift force remain when the engine is stopped.
About 20%
The rudder is hard over , full ahead in shallow water. How much lift force remains when he engine stopped?
About 10%
The rudder is in hard over position ,propeller stopped . The ship is turning slowly. What can we do to make her turn faster without increasing forward speed?
Give a kick ahead
The rudders are amidships and both screws are going ahead. What will happen if the starboard screw is stopped?
The bow will go to starboard
The scope of chain to be used depends upon several factors except:
size of the vessel
The ship is in a sharp turn and the log shows sideways motion to port both forward and aft. Where is the “pivot point” located?
Outside the ship itself
The ship movement where the pivot point plays a part:
rotational
The single turn method of returning to a man overboard should be only if ______.
the vessel is very maneuverable
The tension on anchor cable increases so that the angle of the catenary to the seabed at the anchor reaches 10°. How will this affect the anchor in sandy soil?
it will reduce the holding power
The term “shift the rudder” means ________.
change from right (left) to left (right) rudder an equal amount
The turning circle of a ship is the path followed by the:
pivoting point
The turning circle of a vessel making a turn of over 360° is the path followed by the:
center of gravity
The type of property which is in tuning but the shafts reverse always in the same direction, the astern power being obtained by reversing the pitch of the screw, is commonly known as.
controllable pitch propeller
The under-keel allowance may be laid down by a competent authority or determined on board when planning the passage. Such an allowance is expressed as:
depth below the keel of the ship when moving
The use of ship’s whistle to communicate with tug(s) is common in ports of USA. One long blast means:
Come ahead dead slow
The vessel will anchor with Pilot onboard. You are the duty on bridge. What is your main duty?
Check the position only
These are general professional knowledge which are essential in ship handling and navigation?
All of these
These are professional knowledge which illustrates own ship capabilities that are very essential to the Officer-on-Watch.
All of these
These are variables in which a vessel is subjected to behave during maneuver, EXCEPT:
all of these
These propeller are in-turning but the shaft revolves always in the same direction, the astern power being obtained by reversing the pitch of the screws.
Controllable pitch propeller
This is the form of hull which produces large wake effect, making the speed of the water passing the rudder maybe as much as 35% less than that of the ship. This reduces the rudder efficiency. This form of hull is called:
Bluff or rounded sterns
This occurs when the suction abaft the rudder reaches a value equal to the vapor pressure of the water, so that bubbles of water vapor formed. This causes the force from the rudder drops suddenly and the turn widens. This phenomenon is called:
burbling
This point is moving directly along the fore and aft line at any given instant where the angle of drift is zero. Otherwise known as ________.
pivoting point
This propeller consists of screws that are outward turning, is right-handed on the starboard side and left-handed on the port side. This type of propeller is:
Twin screw
This type of screw is principally used by fast coastal craft and some classes of aircraft carriers. The propeller revolves in the same direction, so as to facilitate engine installation. This propeller is:
Triple or multiple screw
To “ease” a line means to _______.
pay out line to remove most of the tension
To ensure the best result in Mediterranean moor, the chains should:
tend forward 30 degrees on either bow
To ensure the best results during the Mediterranean moor, the chains should _______.
tend forward 30° on either bow
To warp a vessel means to ______.
move the vessel by hauling on lines
Two shackles of anchor chain is equivalent to how many fathoms?
30
Two vessels are abreast of each other and passing port to port in a confined waterway. What should you expect as your bow approaches the screws of the other vessel?
your bow will sheer towards the other vessel
Usually the most gentle way of riding out a severe storm on a larger vessel is _______.
running before the seas
Vessel docking at a wharf in strong current can expect to be set off the berth just as they come along side because of the _______.
hydraulic cushion
Water may boil up around the stern of a vessel in a channel due to ______.
shallow water
What shape of hull does a course - stable ships usually have?
A ship with a long , slim hull
What affect does shallow water have on a vessel’s stopping distance?
The stopping distance is longer
What can be used to reduce the effect of the state of sea-waves?
vegetable / fish oil
What does the helm command “shift the rudder” mean?
Put the rudder over to the opposite side, the same number of degrees it is now
What is a correct reply to a pilot’s request, “How’s your head”?
Passing 150°
What is a ship’s squat?
Vessel reducing under-keel clearance in shallow water
What is meant by the term “broaching to”?
Being turned broadside to the sea
What is meant by veering the anchor chain?
paying out more chain
What is most dangerous overtaking situation shown on the sketches?
A large vessels overtaking a small vessel with little difference in speed between the two vessels.
What is most pronounced about a ship with good course stability?
When you put rudder amidships , she will continue a straight course
What is required to be posted in the house of a vessel?
Vessel’s Maneuvering Characteristics
What is the best approach to an anchorage? I. Against the current or wind II. With the current or wind III. A turn either way to give momentum for the dropping of anchor chain
I only
What is the cause of the increase of draft of a ship moving through the water?
drop in water pressure around the ship’s hull
What is the main purpose of knowing the turning circle of own ship?
All of these
What is the name generally applied to the difference between the vertical positions of a vessel moving and stopped?
squat
What is the purpose of a centerboard when sailing on a tack?
to reduce slide slip of the vessel
What is the reason for the effect we call squat?
Increased velocity and decreased water pressure around the ship’s hull
What precaution should be in mind when maneuvering a steam vessel?
the backing power is low in reacting
What shape of hull would you say a course unstable ship would have?
A ship with a length to beam ratio less than 5.6
What will stopping distance of your ships be when proceeding with 5 knots and reversing to full astern?
The sea - trials test may tell me , or else I can do a test myself to find out
What will the stopping distance of your ships be when proceeding with 8 knots and reversing to full astern?
I can find out from sea trials or test on my own
What would you say about a ships which is course unstable?
When you apply rudder , she will continue to turn when the rudder is put amidships , and may even increase rate of turn
When a boat turns broadside to heavy seas and winds, thus exposing the boat to the danger of capsizing, the boat has _______.
broached
When a conventional rudder is put hard over it creates a lift force and a drag force, When the ships has started to turn, how much lift force do you think remains if the rudder -angle is decreased to 20 degrees from hard over position (35 degrees)?
About 80%
When a large merchant vessel enters shallow water at high speed the:
bow will suck down farther than the stern
When anchoring in a clay bottom, what is one hazard that may cause the anchor to drag?
the anchor may get shod with clay and not develop full holding power
When anchoring in an area with a hard bottom, the fluke angle of an anchor should be set at ________.
30°
When anchoring in an area with a soft bottom, the fluke angle of an anchor should be set at ________.
50°
When anchoring in calm water, it is best for:
have slight sternway on the vessel while letting go the anchor
When anchoring in calm water, it is best to:
have slight sternway on the vessel while letting go the anchor
When attempting to free an anchor jammed in the hawse pipe, the simplest method of freeing it may be:
A simple kick, such as starting the windlass at full power
When fastening synthetic fiber ropes such as polypropylene on bitts, for safety and better rope control it is recommended to:
Make two round turns fast on the leading bitt and then figure of eight on both bitts
When moored with a Mediterranean moor, the ship should be secured to the pier by having ______.
a stern line and two quarter lines crossing under the stern
When picking up your mooring at the buoy, the correct method is to _______.
approach the buoy with the wind and current ahead
When Senior Deck Officer of both vessels involved have decided which will be the last lines to be let go whilst unmooring, these lines should be made fast as follows on the ship accepting the lines.
By turning up the rope on the bitts
When the pilot is embarked he:
is a specialist hire to give navigational advice
When using a Mediterranean moor, the vessel is moored with her _______.
stern to the pier
When using the anchor to steady the bow while approaching a dock you must be aware of the fact that ________.
using an offshore anchor decreases the chance of the anchor holding
When using two tugs to assist in mooring a large, deeply laden ship, the most powerful tug is usually placed _______.
forward to control the bow
Which mooring lines is likely to undergo the most strain when docking a ship under normal conditions?
spring line
While your vessel in docked portside to a wharf, a sudden gale force wind crosses the vessels bow lines to part. The two begins to fall away from the deck and tugs are immediately available, which measure should you take first?
let go the starboard anchor
Who is responsible for the number and use of tugs during mooring?
The Master
With the anchor down at a scope of twice the depth o f the water and you are going astern (single-screw right handed propeller) what should you expect when the anchor starts dragging?
the stern to walk to port but a reduced rate
You are 15 feet off a pier and docking a vessel using only a bow and stern breast line. Once the slack is out of both lines you begin to haul in on the bow breast line. What is the effect on the vessel?
The bow will come in and the stern will remain the same distance off the pier
You are 5 meters off a berth and docking a vessel using only a head and stern line. Once the slack is out of both lines, you begin to haul in on the bow line. What is the effect on the vessel?
the bow will come in and the stern will go out
You are approaching a pier and intend to use the port anchor to assist in docking port side to. You would not use the anchor if _______.
there is shallow water enroute to the berth
You are berthed with a steady offshore beam wind of 30 knots. This wind suddenly increases to 60 knots. When this happens, the force driving the vessel off-berth will be:
Quadrupled
You are landing a single-screw vessel with a right-handed propeller port side to a dock. As you approach the dock, you back down on your engine with rudder amidships. You would expect the vessel to _______.
swing its stern towards the dock
You are landing a single-screw vessel, with a right-hand propeller, starboard side to the dock. When you have approached the berth and back the engine, you would expect the vessel to _______.
turn her bow toward the dock
You are making mooring lines fast to bitts, stern to, as in some Mediterranean ports. A swell is liable to make the vessel surge. How should you tie up?
use manila or synthetic fiber hawsers only
You are mooring to a buoy. You should approach the buoy with the current from _______.
ahead
You are on stations forward for weighting anchor. How would you determine if the anchor is aweigh?
Cable up and down
You are proceeding down a channel and lose the engine(s). You must use the anchors to stop the ship. Which statement is true?
Use one or both anchors with a scope of twice the depth before setting the brake
You are riding to a single anchor. The vessel is yawing excessively. Which action should be taken to reduce the yawing?
drop the second anchor at the extreme end of the yaw, then adjust the cables until the scope is equal
You are the Master of a single-screw vessel. You are docking at a port which has no tugs available. You decide to drop the offshore anchor to help in docking. The amount of chain you should pay out is ________.
1 1/2 to 2 times the depth of the water
You are the Master onboard a VLCC of 280,000 DWT and have received a telex from the cargo terminal asking if your SPM moorings are according to the OCIMF standard. What fittings must you have to comply?
Two tongue-type/hinged bow stoppers with separate closed fairleads. Capacity 200 tons
You have anchored in a mud and clay bottom. The anchor appears to be dragging in a storm. What action should you take?
drop the second anchor, veer to a good scope, then weigh the first anchor
You have arrived at your anchorage location. You have put the engines astern prior to letting go the anchor. How will you know when the vessel has stopped making way?
The backwash of the propeller reaches amidships
Your vessel is docking, but not yet alongside. Which line will be the most useful when maneuvering the vessel alongside the pier?
bow spring line
Your vessel is going alongside a pier. Two tugs will assist at the mooring. Which position and how do you want to use the tugs?
Pushing on ship’s flat side and make fast in the vessel for pulling if needed
Your vessel is going alongside. One tug will assist at the mooring. Which position and how do you want to use the tug?
Make fast on the vessel’s shoulder to push and pull
Your vessel is port side to a pier with a spring line led aft from the bow. In calm weather, putting the engines ahead with the rudder hard left should bring _______.
the bow in and the stern out
Your vessel is to dock bow first at a pier without the assistance of tugboats. Which line will be the most useful when maneuvering the vessel alongside the pier?
bow spring line
Your vessel must moor port side to a berth limited by vessels ahead and astern using a single tug. You are stemming a slight current and there is a light breeze of the dock. Your tug should be made up to the vessel’s ________.
bow
