Shiphandling and Maneuvering Flashcards
The vessel will anchor with Pilot onboard. You are the duty on bridge. What is your main duty?
Check the position only
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 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 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 turning circle of a vessel making a turn of over 360° is the path followed by the:
center of gravity
The turning circle of a ship is the path followed by the:
pivoting point
The term “shift the rudder” means ________.
change from right (left) to left (right) rudder an equal amount
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 single turn method of returning to a man overboard should be only if ______.
the vessel is very maneuverable
The ship movement where the pivot point plays a part:
rotational
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 scope of chain to be used depends upon several factors except:
size of the vessel
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 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 rudder is hard over , full ahead in shallow water. How much lift force remains when he engine stopped?
About 10%
The rudder is hard over , full ahead in deep water . How much lift force remain when the engine is stopped.
About 20%
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 point at which helm must be applied to achieve a required course alteration is:
wheel over position
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 pivoting point of a vessels going ahead is situated:
About one -third of the vessel’s length from the bow
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 most favorable condition to encounter when dock your vessel is when the wind and current are:
parallel to the pier from ahead
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 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 helm command “shift your rudder” means _______.
change from right rudder to left rudder, or vice versa, an equal number of degrees
The helm command “meet her” means _______.
use rudder to check the swing
The handling qualities of any particular class of vessel is based on the following except:
the skill and competence of ship handler
The forward movement of a vessel in one revolution of its propeller is measured by __________.
the pitch
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 effect of wind in an exposed areas of a ship is most noticeable when the vessel is ______.
backing
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 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 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 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 distance that a ship moves forward with each revolution of its propeller, if there is no ship, is called ________.
pitch
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 gained in the direction of the original course when you are making a turn is know as _______.
advance
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 disadvantage of a bow thruster is:
it has no effect on headway to slow down or hold a ship
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 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 19 meters. Find how many shackles to be paid out if a scope of 3 is desired on the anchor chain.
2 shackles
The bow thruster generally is ineffective at ______.
over 3 knots headway
The best time to work a boat into a slip is _______.
at slack water
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 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 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 anchor chain should be kept moderately taut during a Mediterranean moor to ______.
prevent damage to the stern in the event of a headwind
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 “full speed” connotation in the majority of publications on ice navigation refers to maximum speed of:
4 to 6 knots
Ships like VLCC’s turning circle to the right is usually _____ her turning circle to the left.
nearly the same as
Shifting weight aft in heavy weather will reduce the tendency to yaw, but may increase the tendency to _______.
be pooped
Rivers currents tend to ______.
cause the greatest depth of water to be along the outside of a bend
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
One shackle of anchor chain is equivalent to how many feet?
90
One shackle of anchor chain is equivalent to how many fathoms?
15
One shackle of anchor chain is equal to how many meters?
27.4
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
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
On a vessel with a single propeller, transverse force has the most effect on the vessel when the engine is put ________.
full astern
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 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 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
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
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
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
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
Maneuvering with tug(s) in USA ports, TWO BLAST mean or indicate:
Back with normal power
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
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
Leeway is the ______
lateral movement of a vessel downwind of her intended course
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
It is easier to dock a right-hand, single screw vessel ______.
port side to the wharf
It is desirable, when mooring to a buoy, to approach the buoy with the current from ______.
Ahead
It is applied to rudder when it has about one-third of its area forward of the rudder post:
balanced rudder
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 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
Insufficient space between the hull and bottom in shallow water will prevent normal screw currents resulting in ______.
All of the above
In which situation could a vessel most easily capsize?
running in the trough
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