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Головна Онлайн-тести CES Усі типи судів 2nd-Off / 3rd-Off Test for Officers onboard about Navigation, Operational Level (CES v6.0)
Онлайн-тестування: Test for Officers onboard about Navigation, Operational Level (CES v6.0)
Виберіть режим роботи з тестом:
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Онлайн-тест
Опис
Відгуки
Тест складається із 80 випадкових питань.
Усього питань на цю тему: 209
Усього питань на цю тему: 209
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In the Beaufort Scale of Wind Force, what is the Beaufort number associated with the wind force known as a “Gale”? This should not be confused with a “Near Gale” or “Strong Gale”?
Ten (10).
Seven (7).
Eight (8).
Nine (9).
What is the direction of wind associated with an anticyclone (area of high pressure) in the Northern Hemisphere?
Clockwise around the high pressure.
Anticlockwise around the high pressure.
Straight towards the centre of the anticyclone.
Directly away from the centre of the anticyclone towards the nearest low pressure.
What are the limits of a passage or voyage plan?
From Full Away On Passage (FAOP) to End Of Passage (EOP).
From berth to berth.
It is dependant on the voyage and if there are any river or canal transits.
From pilot to pilot.
What immediate actions should the Officer of the Watch take when the ship goes aground on an uncharted shoal in the middle of the ocean?
Stop engines and immediately request “Full Astern”.
Stop engines and tell the engine room to switch over to high suctions.
Stop engines and call the Master.
Sound the General Alarm and plot the ships position.
What is the purpose of a sea anchor?
To keep the lifeboat in a position close to the vessel.
To adjust the drifting speed of the lifeboat.
To give a better signals to any aircraft searching for survivors.
To keep the lifeboat steady against the sea/wind.
When the temperature of the air increases with height it is known as a “Temperature Inversion” and may influence the performance of some instruments on the ship. What should the bridge Officer of the Watch be prepared to happen?
The radar will be show abnormal sea clutter as the pulse is trapped by the inversion.
The GPS may give errors of position because of interference of incoming signals from the satellites.
Abnormal ranges of VHF RT and Second Trace Returns on the radar.
The bearings obtained from the Directional Finder (DF) will not be as accurate as normal.
The ship has a right-handed propeller and is swinging to starboard when the engines are slow ahead and the rudder is to starboard. The engines are stopped and the rate of swing rapidly slows down. How could the swing to starboard be maintained without the ship making much headway.
Transverse Thrust will reduce the swing and therefore a kick ahead is necessary with full starboard helm applied.
The only effective method is by using the bow thruster to push the bow to starboard.
Astern on the engines will allow Transverse Thrust to continue the swing.
By applying the rudder hard over to starboard and going ahead on the engines.
The ship’s engine is going astern and the ship is piking up sternway. The rudder is amidships and the ship has a single, right-handed, fixed pitch propeller. What would be expected to happen?
The ship will probably start to change heading to starboard and stern speed will increase.
The ship will probably start to change heading to port and stern speed will increase.
The ship will move astern at an increasing speed and the stern start to swing off to starboard.
The ship will probably go straight astern without a change in heading and the stern speed will increase.
What corrections must be applied to the echo sounder reading to compare the depth of water with the depth printed on the chart?
Draught of the ship.
Shallow water effects.
Allowance for the ships speed.
The distance between the pulse Transmitter and Receiver.
According to rule 13 of the International Regulations for Preventing Collisions at Sea, what is the definition of “an overtaking vessel”?
When coming up with another vessel from a direction more than 22,5° abaft her beam.
When the vessel is detected as a radar target or sighted visually in a position directly astern.
When coming up with another vessel from any direction abaft her beam.
When coming up with another vessel from a direction more than 45° abaft her beam.
The ship is to berth alongside a quay in calm conditions of no wind or current. The ship has a signle fixed pitch right handed propeller. Which angle of approach would be considered the most favourable?
No. 3.
No. 2.
No. 1.
The decision should be left to the pilot who is in charge of the manoeuvre.
The lights here show those that must be exhibited by a vessel engaged in towing, as per rule 24 of the International Collision Regulations. But how long is the tow behind this vessel?
It is less than 200 metres.
It exceeds 200 metres.
It is more than 50 metres but less than 200 metres.
At least 100 metres.
What is understood by the term “Dew point” of the air?
The temperature of the water vapour in a cloud.
The temperature at which condensation in the air forms into water droplets.
All of the suggested answers.
The “Dew point” is the point at the centre of an Anticyclone.
What is the correct understanding of the term “Block Coefficient” as applied to a ship?
The coefficient of a Block and Tackle.
The ratio of the waterplane shape of the ship to a rectangle of the same extreme dimensions.
The comparisons of the underwater shape of the ship, to a rectangular block of the same extreme dimensions.
The restriction of a valve in a pipe to the flow of fluid through that pipe.
What is the situation of this vessel?
This vessel is not under command, but is making way through the water.
This vessel is not under command and stopped in the water.
This vessel is aground.
This is a vessel constrained by her draft.
You are in open water and clear conditions. You are approaching the pilot station when you hear this signal from a vessel ahead of you. What does it signify?
That the vessel is picking up his pilot.
That the vessel is altering his course to starboard.
That the vessel is starting his engine and resuming his passage.
That the vessel is operating astern propulsion.
You are on a power-driven vessel underway in open water. You sight these lights on the port bow, on a steady bearing. The distance is closing. What are you looking at and what action will you take in compliance with the International Regulations for Preventing Collision at Sea?
This is a power-driven vessel, more than 50 metres in length or less than 50 metres in length and showing a second masthead light, restricted in her ability to manoeuvre. The sidelight of a second vessel can be seen beyond her. Under rule 18, I am obliged to keep clear of the first vessel and will therefore take appropriate avoiding action.
This is a power-driven vessel engaged in towing, less than 50 metres in length, length of tow under 200 metres and the tow, both being restricted in their ability to manoeuvre, seen from the starboard side. Under rule 18, I am required to keep clear and will take appropriate avoiding action.
With the Master on the bridge, when is the Officer of the Watch officially relieved of their responsibility for the vessel?
When the Master starts giving steering orders.
As soon as the Master enters the bridge.
It varies from deep sea to pilotage operations and is never very clear.
When the Master informs the Officer of the Watch that he is taking over the “con”.
The IMO Standard Marine Communication Phrases are recommended to be used when the ship’s Officer is verbally talking to whom?
When talking between ship and shore personnel.
In circumstances described in all of the answers provided.
When giving orders on board with other seafarers.
When talking on the VHF between ships.
Which of the four calculations illustrated is the correct one to determine the latitude of the observer when the sun is on the meridian?
Calculation 3 is correct.
Calculation 2 is correct.
Calculation 1 is correct.
Calculation 4 is correct.
Which of the answers best summarises the information which should be provided for the bridge Officer of the Watch within an effective Voyage plan?
Courses to steer; distance off dangers; parallel index lines; expected currents; prevailing winds; distance between alteration points.
Expected prevailing wind and weather.
Contingency arrangements in case of problems.
All of the suggested answers.
In the diagram, the amount of water under the keel is indicated by the letter “C”. Which bridge instrument would measure this value?
Draught Indicator.
Echo Sounder.
ECDIS.
Arpa Radar.
A ship normally turns (swings) around a point which is not the centre of gravity. What is this point normally called?
Centre of Turn.
Centre of Buoyancy.
Centre of Floatation.
Pivot Point.
Ships vary considerably in design and underwater shape, but does the ship’s trim ever have any influence on its steering abilities?
Yes, a ship often steers better if trimmed by the bow.
Yes, the ship often steers better if trimmed by the stern.
No, the ship will have the same steering ability and is unaffected by trim.
No, it is usually best to be on an even keel and have no trim at all.
What are the three possible types of messages seen when there is an ECDIS alert?
Either an Alarm, an Indication or a Caution.
Either an Alarm, an Indication or a Caution.
Either an Alarm, a Warning or a Caution.
Either an Alarm, a Warning or an Information.
The vessel is steaming off the coast when the engine room informs the bridge it must stop engines immediately. Shortly afterwards they informed the bridge they would need a least three hours to fix it. Which of the following actions would be the most suitable taken by the bridge?
Display the NUC signal and keep a good lookout.
Display the NUC signal, maintain the watch and ask the Engine room to be a quick as possible.
Display the NUC signal, maintain the watch and wait for further developments.
Display the NUC signal, maintain the watch and determine how the ship is drifting and the probable position after 3 hours.
What, by definition in the International Collision Regulations, is a “vessel restricted in her ability to manoeuvre”?
A vessel which because of her draught in relation to the available depth of navigable water is restricted in her ability to deviate from her course and keep out of the way of another vessel.
A vessel engaged in underwater work, such as the laying, picking up or servicing of a pipeline, or which is in support of diving operations, performing dredging and mine-clearance or is deploying or recovering a pilot.
A vessel which from the nature of her work is restricted in her ability to manoeuvre as required by the Rules and is therefore unable to keep out of the way of another vessel.
A vessel which through some exceptional circumstance is unable to manoeuvre as required by the Rules and is therefore unable to keep out of the way of another vessel.
With a pilot ladder, the lowest spreader shall be the 5th step from the bottom. At what interval should there be further spreaders upwards on the ladder?
It does not matter where the spreaders are fitted.
At intervals not exceeding 12 steps.
At intervals not exceeding 15 steps.
At intervals not exceeding 9 steps.
If a ship requires 2 nautical miles to stop in the water from a “crash stop” when proceeding at full ahead in deep water. What will the stopping distance be in shallow water?
A shorter distance.
Similar distance to deep water.
About 1,5 nautical miles.
A greater distance.
A man is reported to have fallen overboard and the Officer of the Watch releases the lifebuoy and starts a man overboard manoeuvre, who are the first persons onboard he should inform?
The Master only.
The crew quarters for extra lookouts.
Master and Engine Room.
Chief Officer and lifeboat party.
What special equipment can often provide assistance in locating a survival craft or man overboard and in the water?
A SART.
A sectored search pattern.
A RACON.
AIS.
What can be simply rigged to assist a survival craft in keeping alongside own vessel?
The accommodation ladder deployed to the water surface.
The survival craft painter made fast on the vessel’s deck.
A single weighted line hanging over the side from the deck.
A painter rigged fore and aft against the vessel’s side.
The maximum height that a pilot should be required to climb on a pilot ladder before reaching the deck or stepping onto an accommodation ladder platform is:
12 mtrs.
15 mtrs.
9 mtrs.
6 mtrs.
If the radar is set onto the Relative Motion Display, what would an echo of a target with no trail indicate? Note this the trail of the echo and not a vector.
The target is stopped and making no way through the water.
The target is on the same course and speed as own ship.
The target is on a constant bearing and getting closer to own ship.
The target is on a collision course with own ship.
What is the weather associated with being in the centre of an Anticyclone (a region of High Pressure)?
Strong winds and heavy rain.
Persistent rain and very humid weather.
Strong winds but with very little rain.
Light winds and fair weather, sometimes fog.
What sound signal shall be used on ship’s whistle when there is a man overboard?
4 long blasts repeatedly.
5 long blasts repeatedly.
3 long blasts repeatedly.
6 long blasts repeatedly.
How can an ARPA assist the ship to steer a suitable course to make good the entrance to a channel?
Select Relative motion display and make Own Ship vector pass through the middle of the entrance to the channel.
Acquire the buoy at the entrance to the channel and on relative vector display alter course to make the vector of the buoy pass directly through the centre of the screen.
Select True ground stabilised vectors and make the vectors from both buoys at the entrance to the channel pass either side of the centre of the screen.
Select ground stabilised true motion display and alter course so that own ships true vector passes through the middle of the entrance to the channel.
If a distress signal is received on board your ship, what should be the first action that should be taken?
Determine how close your vessel is to the distressed vessel.
Contact SAR Authorities via nearest coastal Radio station.
Determine if anyone else has heard the distress signal and if your vessel is near the distress.
Attempt to establish contact with the distressed vessel.
When should voyage planning be done?
Before the pilot is leaves the vessel at the departure port.
During the pilotage when leaving the berth.
Prior to leaving the berth.
Before the vessel completes the previous passage.
Once a ship (equipped with self-stowing auto-tension winches) is moored alongside a loading or discharging berth, how is it recommended that the winches are set?
All mooring winches be left in “auto-tension” mode.
All winches to be left with the manual brake on and out of gear.
The “breastline” and “headline” winches be left in the auto-tension mode and spring winches with manual brake on.
The “spring” winches be left in the auto-tension mode and all other winches with the manual brake on.
Can anything be done on a vessel with forward speed, to reduce the change in heading caused by a right hand fixed pitch propeller being put astern?
No, the rudder should be kept amidships when going astern and there is little that can be done to reduce the swing to starboard.
The rudder should be put hard to starboard to reduce the water flow to the left side of the propeller.
Yes, the rudder can be put to port.
The rudder can be cycled from side to side.
When making a new pilot ladder onboard the ship, which of the following ropes would be best suited as the side ropes on which the steps are fastened?
Nylon rope.
Polyester rope.
Polypropylene rope.
Uncovered manila rope.
You are on a power-driven vessel underway in open water. This vessel is sighted wide on the port bow. It’s bearing is opening, but its distance is closing rapidly. Which of the following is a correct assessment of the situation and the action to be taken?
Risk of collision is deemed to exist and I will make a broad alteration of course to starboard, sounding one short blast. I will re-assess the situation when the alteration is carried out.
Risk of collision is deemed not to exist. However, to be sure of a safe passing distance, I will reduce my speed to allow the other vessel to pass ahead.
Risk of collision is a possibility. I will maintain my course and speed for now, but be prepared for an alteration of course to port if the CPA seems to be less than 0,2 nm as we draw closer.
Risk of collision is deemed not to exist and I will maintain my course and speed. I will continue to monitor the situation.
What actions should the Officer of the Watch take when the ship’s steering gear fails?
Call the Master and advise him of the situation.
Display the NUC signal and consider stopping the engines.
All of the suggested answers.
Request the engine room to check the steering gear.
What possible reason could there be for the identification mark associated with a Racon not being visible on the radar screen?
All of the suggested answers.
The Racon may not be transmitting a pulse.
The radar may be suppressing the mark with application of the Interference Rejection control.
The transmitted radar frequency may not trigger the Racon transmitter.
When fastening synthetic fibre ropes such as polypropylene on bitts, for safety and better rope control it is recommended to:
Make it fast with round turns on the leading bitt alone, fig. 1.
Make it fast in a figure of eight fashion, fig. 3.
Make two round turns fast on the leading bitt and then figure of eight on both bitts, fig. 4.
Make it fast on the second bitt alone, fig. 2.
What is “AIR DRAUGHT”, in the figure?
Air draught is indicated by A, in the figure.
Air draught is indicated by D, in the figure.
Air draught is indicated by C, in the figure.
Air draught is indicated by B, in the figure.
What is the correct understanding of the term “a ship with good Directional Stability”?
A ship moving forwards with the rudder amidships, will continue in a straight line.
The ship will shear away from its heading if not controlled.
A ship when swinging, will continue to swing even after the rudder is returned to amidships.
A ship will always follow in the direction that the rudder is put.
In an extreme case, in addition to having your winch brakes as tight as can be, you can increase the brake holding capacity of the winch drum by putting it in gear and setting the power to the “heave” position. However this may cause:
All the listed alternatives.
The increased braking power of the winch to exceed the breaking strength of the wire and rope paid out from it which might cause the wire or rope to part.
Strain on the fairleads and rollers in use in excess of their Safe Working Load.
Damage to the winch by distorting the shaft.
What are the immediate duties of the bridge Officer of the Watch when the ship suddenly runs into a fog bank?
Commence sounding the fog signal, engines on standby, call the Master and lookout, if not already on duty.
Commence sounding the fog signal and reduce speed to Slow Ahead.
Commence sounding the fog signal and call the Master and wait for him to arrive before taking any further actions.
Commence sounding the fog signal and if the radar indicates no echoes in the vicinity, proceed at the normal speed until ships are detected on the radar or until the fog lifts.
What radar device assists in the detection and location of a survival craft?
AIS beacon.
EPIRB beacon.
A personal locator beacon.
SART beacon.
The position of the ship provided by the GPS should always be confirmed by other means, when possible. Which of the following suggested methods would be the most accurate?
The ranges of three distinctive shore objects on the radar.
Bearing and distance from a navigational Buoy.
Compass bearings of three shore objects.
Bearing using the Radio Direction Finding of three radio beacons.
When a ship is lying at anchor in a tidal area using both forward anchors, to what particular aspect should the officer of the watch be paying special attention?
When the ship swings to the tide the direction of swing should be controlled to avoid the anchor cables becoming wrapped round each other.
The tension on both cables should be similar, to avoid one dragging and all the weight of the ship remaining on the other anchor only.
The ship will become controlled by the tide and the wind will not be allowed to have any effect on the direction the ship lies at anchor.
The two anchors will restrict the ships swing with the tide and the ship may not lie to the prevailing current and wind.
What is happening here?
These are two vessels engaged in fishing (pair trawling), showing the additional voluntary signals for shooting nets.
These are two vessels engaged in fishing (pair trawling), showing the additional volutary signals for hauling nets.
This is a vessel engaged in towing a disabled tow, restricted in its ability to manoeuvre, with a searchlight used to highlight the location of the tow.
These are two vessels engaged in fishing, using purse-seine gear. The searchlights are simply working lights.
What is the depth of an iceberg below the surface of the sea?
The depth of an iceberg below the surface is always about one sixth of its total depth.
The draught of an iceberg is about the same as the visible part of the iceberg above the water.
The draught of an iceberg varies with the type of berg and its age.
The draught of an iceberg is normally about 3/4 of its total depth.
You are approaching a port in a snowstorm. You hear this signal. What kind of vessel is it and what is it doing?
It comes from a vessel at anchor, less than 100 metres in length.
It comes from a vessel engaged in pilotage duties and it is making way through the water.
It comes from a vessel engaged in pilotage duties at anchor, over 100 metres in length.
It comes from a vessel restricted in her ability to manoeuvre.
What sound signal can be made when nearing a bend in a river, with the view around the bend obscured by an intervening obstruction?
Two short blasts.
One prolonged blast.
Two prolonged blasts.
One short blast.
You are on a power-driven vessel underway in open water. You sight these lights on the port bow, on a steady bearing. The distance is closing. What are you looking at and what action will you take in compliance with the International Regulations for Preventing Collision at Sea.
This is a power-driven vessel engaged in towing, less than 50 metres in length, length of tow under 200 metres and the tow, both being restricted in their ability to manoeuvre, seen from the starboard side. Under rule 18, I am required to keep clear and will take appropriate avoiding action.
This is a power-driven vessel, more than 50 metres in length or less than 50 metres in length and showing a second masthead light, restricted in her ability to manoeuvre. The sidelight of a second vessel can be seen beyond her. Under rule 18, I am obliged to keep clear of the first vessel and will therefore take appropriate avoiding action.
I don’t know.
This is a power-driven vessel engaged in towing, more than 50 metres in length or less than 50 metres in length and showing a second masthead light, length of tow 200 metres or more, not under command. I will keep clear under rule 27.
After passage planning with ECDIS, how should the route be checked for safety?
Using the ECDIS route and geometry checker only.
Using the ECDIS route checker and by visually sighting all along it.
Transfer the ECDIS plan onto paper charts.
Investigate the displayed waypoint list after it is printed out.
What can be used to reduce the effect of the state of sea-water?
Vegetable/Fish Oil.
Foam.
Crude Oil.
Fuel Oil.
Which type of vessel suffers from the greatest squat effects?
Vessel with a low Block Coefficient.
Vessel with a small length to beam ratio.
Vessel with a high Block Coefficient.
Vessel with a large length to beam ratio.
What would be the stopping distance of a VLCC when proceeding at 8 knots in deep water and the engines are put “Full Astern”?
8 nautical miles.
Varies, but can be determined from trial data.
15 ship lengths.
4 nautical miles.
According to the International Regulations for Preventing Collisions and the illustrated lights, what type of vessel is this and from what direction is it viewed?
This is a vessel engaged in fishing other than trawling, making way through the water, with outlying gear extending more than 150 m in the direction of the all-round white light. Looking at its port side.
This is a vessel engaged in pilotage duties at anchor. Looking at its port side.
This is a vessel engaged in fishing other than trawling, making way through the water, with outlying gear extending more than 150 metres in the direction of the all-round red light. Looking at it from astern.
If a ship in deep water requires 2 nautical miles to “crash stop”, what will be the crash stopping distance in shallow water for the same start speed?
Similar distance to deep water.
A greater distance.
A shorter distance.
Depends on the crash stop used.
The ship’s rudder is full over when the ship’s engines are full ahead. Will the turning effect (lift force) of the rudder be changed when the engine is stopped?
Yes, the lift or turning force will be reduced to about 50 % of the original lift force when the engines are stopped.
Yes, the lift force will be dramatically reduced when the engines are stopped.
No, the lift force is unaffected by the speed of the propeller.
No, the turning force applied by the rudder will be maintained within about 90 % of the lift force when going full ahead.
What action should the Officer of the Watch (OOW) take if he is forced to make a major deviation from the voyage plan?
There is no special action necessary.
Inform the Master.
Check that the deviation will not lead into danger.
Make an appropriate entry in the Log Book.
You are on a tug and are towing an unmanned barge. You are restricted in your ability to manoeuvre. The total length of the tow is 219 metres. What daylight signals are required by the International Regulations for Preventing Collisions at Sea?
A diamond shape, where it can best be seen shall be displayed on the tug and the tow. Three shapes shall also be displayed in a vertical line, the upper and lower being balls and the middle one a diamond. Diamond shape.
A diamond shape, where it can best be seen, on the tug only. Three shapes shall also be displayed, being three balls in a vertical line.
Three shapes shall be displayed forward on the tug, in a vertical line, the upper and lower being balls and the middle one a diamond.
Three shapes shall be displayed on the tug, where they can best be seen, in a vertical line, the upper and lower being balls and the middle one a cylinder. The signal flag “T” shall also be flown on the tug. A diamond shall be displayed aft on the tow.
Which of the following precautions should be taken when work is to be carried out on the radar scanner unit on the mast?
Only the electrical fuses forthe radar undergoing repairs needs to be removed, allowing the ship to retain a workable radar.
A “Not to be used” sign on all radars and fuses for the complete radar systems to be removed.
Only the electrical fuses for the scanner motor needs to be removed.
A sign needs to be attached to all the radars warning the bridge officers of repairs and the fact the radars are “Not to be used”.
You are on a sailing vessel, underway in open water. This vessel is sighted on the starboard bow, on a steady bearing and the distance is closing. By the International Regulations for the Preventing Collisions at Sea, what action will you follow?
Risk of collision is deemed to exist and, as the other vessel is on a steady bearing on my starboard side, I am required to keep out of the way. I will make a broad alteration of course to starboard.
By Rule 18, a power-driven vessel underway shall keep out of the way of a sailing vessel. I will maintain my course and speed, but will continue to monitor situation to ensure the other vessel takes avoiding action.
Risk of collision is deemed to exist and, as the other vessel is on a steady bearing on my starboard side, I will maintain my course and speed.
This vessel is clearly a power-driven vessel and I anticipate that the bearing will therefore close and she will pass ahead at a safe distance.
The ship is to berth alongside a quay in calm conditions of no wind or current. The ship has a single fixed pitch right handed propeller. Which angle of approach would be considered the most favourable?
The decision should be left to the pilot who is in charge of the manoeuvre.
No. 3.
No. 2.
No. 1.
When should a ship’s officer use some of the English language found in the IMO’s publication “Standard Marine Communication Phrases”?
When talking between ship and shore in a foreign land.
In circumstances described in all of the answers provided.
When talking on the VHF between ships of differing flag states.
When giving orders to a multi-national bridge team.
A ship is being overtaken by another ship while proceeding along a river. What should be the required procedure?
The overtaking vessel should request permission to overtake from the Port Control VTS.
The overtaking vessel can overtake but must allow sufficient space to reduce the interaction between the two vessels.
The overtaking vessel should request permission from the other ship by sounding two prolonged blasts followed by two short blasts on the whistle or by direct VHF contact.
There should be no overtaking in these confined waters.
The position of the ship is found by taking a series of bearings using a magnetic compass. How should an error of 5° WEST be applied to the compass bearings?
The error should be “High” or “Low” and therefore more information is required.
Add the 5° to the bearings.
Subtract 5° to the bearings.
The same error applies to all bearings and therefore it can be ignored.
Which part of the magnetic compass error changes with a change in the course steered?
All of the suggested answers.
Deviation.
Variation.
Induced magnetism.
A balanced rudder has some of the rudder area forward of the rudder axis. About how much area should this be to call it a balanced rudder?
It should be about 20 %.
It should be about 5 %.
It should be about 55 %.
It should be about 50 %.
Which of the answers best summarises the information which should be provided for the bridge Officer of the Watch within an effective Voyage plan?
All of the suggested answers.
Expected prevailing wind and weather.
Contingency arrangements in case of problems.
Courses to steer; distance off dangers; parallel index lines; expected currents; prevailing winds; distance between alteration points.
What could be the reason for the magnetic compass to swing through large angles when the ship is rolling in a seaway?
The error due to deviation is large for that ships heading.
The Coefficient B determined by the Compass Corrector at the last dry-dock was not correctly calculated.
The heeling error magnets are upside down and/or not in the correct position.
The induced magnetism from the earth’s magnetic field is very strong in that area.
The rudder is hard over with the engine at full ahead. Will the turning effect of the rudder be changed if the engine is stopped?
Yes, the turning force will be dramatically reduced when the engine is stopped.
No, the turning force applied by the rudder will be maintained within about 90 % of the turning force when going full ahead.
Yes, the turning force will be reduced to about 50 % of the original force when the engine is stopped.
No, the turning force is unaffected by the speed of the propeller.
What are the main advantages to the Navstar, Glonas and Galileo satellite navigation systems?
These satellite systems give world-wide coverage 24 hours a day.
Satellite navigation systems also give information about weather and wave conditions.
If a vessel uses any one of them, there is no need to practice other forms of navigation.
They are all made specifically for ships and marine operations.
How can an ARPA assist the ship to steer a suitable course to make good the entrance to a channel?
Acquire the buoy at the entrance to the channel and on relative vector display alter course to make the vector of the buoy pass directly through the centre of the screen.
Select True ground stabilised vectors and make the vectors from both buoys at the entrance to the channel pass either side of the centre of the screen.
Select ground stabilised true motion display and alter course so that own ships true vector passes through the middle of the entrance to the channel.
Select Relative motion display and make Own Ship vector pass through the middle of the entrance to the channel.
The «Navigation (NA) Operational Level» subject covers both theoretical and practical knowledge regarding safety when working with electrical equipment. Mastery of this information is a key indicator of an employee's competence in their specific role on a vessel. As a 3rd officer responsible for navigation duties, your primary tasks include assisting senior officers in planning the ship’s voyage by calculating safe passage routes, preparing navigation charts, and monitoring weather conditions. You are also responsible for conducting regular safety checks on all life-saving equipment to ensure it is in good working order, as well as operating and maintaining navigational equipment like radar, GPS, and compasses to ensure they are functioning correctly.
- Version: 4.1, 5.0, 5.1, 6.0.0.
- Test type: STCW.
- Duty: 3rd Officer.
- Level: Operational.
- Theme: Navigation.
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