The Ecdis Manual 2019 Edition - Witherbys Flashcards
When was radar developed?
A. World War I.
B. World War II.
C. 1965
D. 1980
B. World War II.
These type of images tend to have color and transparency values defined for small regular rectangular areas on a grid making up the graphic.
Raster images
These type of images tend to be defined as a set of lines and areas with appropriate properties
Vector images
This is the code for international code for land and Sea based graphic information system incorporating international standards of Geospatial data.
A. S57
B. S100
C. S101
D. None of the above
B. S-100
This special publication provides specifications and guidance regarding the issuing and updating of electronic navigation charts and their display in ECDIS in terms of symbols and colors
A. S-57
B. S-101
C. S-52
D. S-63
C. S-52
This special publication includes a description of the data format, productions, specification for the production of ENC data, and an updated profile.
A. S-57
B. S-101
C. S-52
D. S-63
A. S-57
This special publication describes the IHO recommended standard for the protection of ENC data.
A. S-57
B. S-101
C. S-52
D. S-63
D. S-63
This special publication contains test data sets for ECDIS?
A. S-57
B. S-101
C. S-52
D. S-64
D. S-64
This standards of IHO special publications that The international standard is based off of or what there are five.
S – 52, S – 57, S – 61, S – 63 and S – 64
Performance standards apply to ECDIS only when navigating in:
A. ECDIS mode of operation only.
B. RCDS mode of operation
C. ECDIS back up arrangements
D. All of the above.
D. All of the above.
What must an ECDIS display according to IMO Resolution MSC.232(82)?
SENC and all other chart information as deemed necessary by HOs for safe navigation
SENC stands for System Electronic Navigational Chart.
What must an ECDIS manage and record post installation of the base discs?
All new editions and chart corrections issued
This is essential for ensuring up-to-date navigational information.
What should an ECDIS indicate regarding the ENC?
The scale of the ENC and whether RCDS mode/a paper chart is required
RCDS stands for Raster Chart Display System.
In what orientations must an ECDIS be capable of displaying information?
North up and true motion
True motion refers to the actual movement of a vessel relative to the ground.
What type of symbology must an ECDIS use?
IHO symbology
IHO stands for International Hydrographic Organization.
What functions related to route planning must an ECDIS carry out?
Route planning and warn of dangers
Detailed in Section 5.23.
What functions related to route monitoring must an ECDIS perform?
Route monitoring and warn of dangers
Detailed in Section 5.24.
How long must an ECDIS preserve the voyage recording?
The previous 12 hours
This is crucial for reviewing navigation data and events.
Who produces nautical chart or publication?
The government authorized hydrographic office or other relevant government institution
What are the IMO performance standards?
Recommendation on performance standards for electronic chart, display and information systems systems and equipment required to meet the requirements of regulations 19 and 20 Shelby type approved by the administration.
True or false although all ships over 500 GT must comply with ECDIS carriage requirements. This does not mean that they must go paperless and navigate using ECDIS as a replacement for paper charts.
True
True or false to comply with ECDIS carriage requirements a ship cannot remain a paper ship.
False a ship may use paper charts with the ECDIS as another navigation aid
True or false a back up in our CDS mode requires adequate paper charts
True
What are the two acceptable options for a backup to the ECDIS?
- A second ECDIS connected to an independent power supply in a separate GNSS position input
- An appropriate up-to-date folio of official paper charts for intended voyage
These amendments include ECDIS as a required confidence both at operator and managerial level and require deck officers serving on a ship fitted with an ECDIS to have conducted approved ECDIS training.
The Manila amendments
True or false at present there are no IMO guidelines for type specific training and so content for any course should as a minimum encompass that listed in annex A
True
When on watch which of the following is your responsibility as an ECDIS operator:
A. Charts are up-to-date.
B. ECDIS is set up correctly.
C. Sensor information is accurate
D. All the above.
D. All of the above.
True or false charts that are not issued by or on the authority of a government authorized hydrographic office, irrelevant government institute are unofficial, and are often referred to as private charts.
True these charts are not accepted as a basis for navigation under SOLAS.
True or false at most national hydrographic offices, the majority of the vector data is created by tracing over the raster data
True
Which of the following is vector charts, roster charts and digital overlays ?
A. Additional information.
B. A layer database of charted information.
C. A digital image of a paper chart.
A. Digital overlays
B. Vector chart.
C. Raster chart.
True or false displaying an approved chart alone is enough to conduct a berth to berth planning and monitoring.
False there must be a fully complete passage plan approved by the master with nogo areas of manual construction as appropriate
What does RENC stand for?
Regional ENC coordinating center
True or false No matter how accurate or inaccurate the data is in the first place, the ability to manipulate. It is significantly affected by the functionality of the software used to display it.
True
What datum do most ENC‘s use?
WGS 84
Which special publication describes how objects on display should look?
A. S – 52
B. S – 57.
C. S – 101.
D. S – 100.
A. S – 52.
This special publication describes the standards to be used for the exchange of digital hydrographic data between national HO and for the distribution of digital data and products to manufacturers mariners and other data users.
A. S – 52
B. S – 57.
C. S – 101.
D. S – 100.
B. S – 57.
What is the boundary look like that identifies a where unofficial data is shown on ECDIS display?
A special line style this boundary is visualized as a one sided red line with a diagonal stroke on unofficial side of the line.
ECDIS is only a true ECDIS by IMO definition if it’s using official data in the form of :
A. ENC.
B. RNC.
C. Specialty charts.
D. A and B only.
D. A and B only.
True or false the use of data must be discussed between masters and officers just because you can show lots of data and overlay does not necessarily mean it will increase spatial awareness and effectiveness
True
True or false As long as ECS systems can use ENC or RNC data, they can be used to fulfill ECDIS carriage requirements.
False ECS systems may not be used to fulfill ECDIS carriage requirements in accordance with solace chapter 5.
Which of the following is true, true concerning the analysis of the regulations:
A. All ships must have government approved, nautical charts, and publications sufficient for the voyage.
B. An ECDIS is accepted as a nautical chart provided it has sufficient back up arrangements.
C. Charts must be up-to-date.
D. All of the above.
D. all of the above
Which regulation clarifies what is official data? It is an approved chart on an approved system.
A. Solas chapter V regulation 18
B. SOLAS chapter IV regulation 19
C. SOLAS chapter V regulation 19.
D. SOLAS chapter VI regulation 16.
C. SOLAS chapter V regulation 19.
True or false even if an ECDIS meets the SOLAS chart carriage requirements it is down to the flag state to determine how the ECDIS can be implemented on board
True
If all the electronic equipment, Gyro radar and GNSS have all been checked and confirmed, correct to the best of the users ability then it can be said that relative navigation is as accurate as the relationship between:
A. The Gyro in the ECDIS
B. The GNSS position and charted position.
C. The visual picture and radar picture
D. The visual and/or radar picture compared to the corresponding picture on the ECDIS.
D. The visual and or radar picture compared to the corresponding picture on the ECDIS.
Any data that is not _________ will need to be monitored to check whether the EDS automatically changes to received GNSS signal or whether the user needs to change it at the receiver.
WGS 84
When in our RCDS mode, which of the following is correct?
A. We are RCDS should display the horizontal data of the RNC.
B. The RCDS should alarm if the receive GNSS position is not WGS 84 or PE 90
C. The RCDS should continuously indicate if the RNC cannot be referenced to WGS 84 or PE 90
D. All of the above.
D. All the above. Also, the RCS should allow non-WGS 84 positions to be displayed in the correct relationship either by changing the art GNSS receiver or the ECDIS itself.
What is the reference from which all depths are measured? This is usually the lowest astronomical tide.
A. Depth datum.
B. Tidal datum
C. WGS 84.
D. Chart datum
D. Chart Datum
True or false there are some departures from the rule of chart datum which use mean sea level
True
When the chart display centerpoint is between usually through the 30° and 80° north, you can set the chart projection to __________.
A. Equidistant cylindrical
B. Polar stereographic North.
C. Polar stereographic south.
D. Either A or B.
D. Either A or B.
Large scale charts, medium scale charts, and small scale charts are, which of the following.
A. General overview.
B. Approach/coastal.
C. Berthing/harbour.
D. Intercoastal
Large scale charts: C
Medium scale charts : B
Small scale charts : A
The effect of zooming in and out on a chart alters the appearance because each individual object has an attribute known as ________ and _________.
Scale minimum SCAMIN and scale maximum SCAMAX
Most objects will be visible at the largest scale available so the important attribute to understand is scale minimum which is when the object starts to disappear when _________.
A. Zooming in.
B. Zooming out.
C. Panning ahead
D. Panning behind
B. Zooming out.
True or false and ECDIS shows the scale and which the chart is being displayed and whether it is under or over scale, but an ECS does not.
True
It is important to be aware that if an ENC is displayed at too small scale, certain objects will not be shown due to their ________ value being greater than the scale in which the chart is being viewed.
A. SCAMIN
B. SCAMAX
C. Datum
D. None of the above.
A. SCAMIN
The _____________ is the minimum scale at which an object is to be displayed.
SCAMIN
What is the reason objects have SCAMIN?
A. So that they can be viewed even on small scale vector charts
B. So that they can be viewed even on large scale vector charts.
C. To avoid clutter when viewing a vector chart at a small scale
D. All of the above
C. To avoid clutter when viewing a vector chart at a small scale.
ENC cells are currently split into six different scale categories name them
- Overview.
- General.
- Coastal.
- Approach.
- Harbour
- Berthing
What is the best scale NC that should be used to replace harbor paper chart.
Scale five Harbour
What is the ENC cell data source referred to as?
CATZOC category of zone of confidence of data
What is the position accuracy of A1 ? A2 ? B? C? D?
A. +/- 20 m
B. +/- 5 m
C. +/- 50 m
D. +/- 500 m
E. Worst than ZOC C
A1: B
A2: A
B: C
C: D
D: E
One of the categories in which catzoc zones are derived?
- Position accuracy.
- Depth accuracy.
- Seafloor coverage.
- Typical survey characteristics.
- Controlled, systematic surveys
- Modern survey echosounder.
Where should the CATZOC table be posted?
A. Anywhere in the wheelhouse.
B. In the chart room.
C. On the bridge wings
D. Near the ECDIS
D. Near the ECDIS.
This special publication does each of the following ensures a base and supplemental levels of display for ENC data, including standards of symbols, colors and their standardized assignment to features scale, imitations of data presentation and appropriate capability with paper chart symbols
Insures the display is clear and un ambiguous
Ensure that there is no uncertainly over the meaning of color or symbols on the display
Establishes an accepted pattern of ECS presentation that becomes familiar to mariners and so can you recognize instantly and without confusion
S-52
Special publication is the transfer standard for digital hydrographic data
S-57
This is the link between an SENC’s Gio reference objects and what the ECDIS uses to display a chart on the screen.
The presentation library
These symbols are accepted under the S 52 presentation library.
A. Traditional.
B. Simplified.
C. Verified
D. A and B only
D. A and B only.
While traditional symbols are familiar they can also be:
A. Difficult to see at daytime
B. Difficult to see at night.
C. Not color-coded.
D. B and C only.
D. B and C only.
True or false the terms permit and license often referred to the same thing
True
This is a code that is systems specific to operate an ECDIS installed or attached as a USB dongle
This is a code that is required to unlock the data cells installed in an ECDIS
- License.
- Permit.
What is this symbol on ECDIS represent?
A. Unknown depth
B. Seabed, obstructions or pipelines.
C. Information about chart display.
D. Aids and services.
B. Seabed, obstructions, or pipelines.
This is the electronic chart derived from the core S – 57 data that is specific ECDIS uses to link with the S – 52 presentation library just before an image is displayed to the user.
A. SENC
B. ENC
C. INC
D. None of the above.
A. SENC systematic, electronic navigational chart
True or false ENC data is received directly from the chart distributor in
S – 57 format the ECDIS must first convert each ENC from S 57 ENC format into an SENC that is optimized for chart image creation.
True
The primary goal of this is to support a greater variety of hydrographic related, digital data sources, and products.
A. S – 57.
B. S – 63.
C. S – 100.
D. S – 101.
C. S - 100
This will be transitioning to S – 100 and will be carefully monitored by the industry.
S – 57. it will continue to exist as the designated format for ENC data for the foreseeable future.
True or false S – 100 is inherently more flexible and makes provision for such things as the use of imagery and greeted enhanced med data, and multiple encoded formats
True it also provides a more flexible and dynamic maintenance for resume, dedicated online registry
S – 101 will supersede what?
S – 57
True or false S – 101 ENC’s will eventually be the best navigation player within an S 100 enabled ECDIS
True
The inner construction of ENC‘s and RNC‘s is fundamentally different
ENC’s are official ______ charts
RNC are official ________ charts
- Vector
- Raster
True or false IMO performance standards for ECDIS state that where ENCs are not available. RNC may be used in ECDIS to meet carriage requirements.
True, however, RNC should be used together with an appropriate folio of up-to-date paper charts
What is operating in our RCDS mode?
A. Operating with ENC charts on non-ECDIS appliances.
B. Operating with ENC charts on ECDIS.
C. Operating with RNC’s on ECDIS to meet Solas carriage requirements for Nautica charts.
D. None of the above.
C. Operating with RNC on ECDIS to meet solas carriage requirements for nautical charts.
Which is true about RCDS mode?
A. There are no display boundaries.
B. RNC will not trigger automatic alarms.
C. Horizontal dams and chart projections may differ between RNCs
D. All of the above.
D. All the above
Which is true about RCDS mode?
A. A number of RNC‘s cannot be referenced to either WGS 84 or PE – 90 geodetic datums.
B. The display of RNC features cannot be simplified by the removal of features to suit a particular navigational, circumstance or task.
C. Selecting different scale charts the look ahead capability may be limited.
D. All of the above.
D. All of the above.
Which is true about RCDS mode?
A. Orientation of our CDS display to anything other than chart up may affect the readability of the chart text and symbols.
B. It is not possible to interrogate RNC features to gain additional information about charted objects.
C. With RNC it is not possible to display a ships, safety contour or safety depth, and highlight it on the display unless these features are manually entered during the route planning.
D. All of the above.
D. All of the above.
Which is true about RCDS mode?
A. Depending on the source of RNC different colors, maybe used to show similar chart information.
B. An RNC is intended to be used at the scale of the equivalent paper chart excessive zooming in or zooming out, will the display image..
C. When using RNC mariners are invited to consult the source diagram or the zone of confidence diagram if available.
D. All of the above.
D. All the above.
True or false when operating ECDIS in RCDS mode due to the unavailable ENC data the full functionality of ECDIS is unachievable, and it can only be used together with an appropriate portfolio of paper charts.
True
True or false ECS meets all IMO requirements for ECDIS and is intended to satisfy the solas chapter 5 requirements to carry a navigational chart.
False
He can perform the same task and some better than an ECDIS system however they should only be considered as a _______ rather than full navigation systems.
A. Collision avoidance system.
B. Back up navigation system
C. Situational awareness system.
D. RCDS mode.
C. Situational awareness system.
True or false the software and hardware for ECDIS is designed to be left on.
True
An ENC is in accessible to the user in raw form. It must first be converted by the ECDIS from _________ ENC format into an internal format called __________.
- S – 57
- SENC
Which product specification deals with designing the color and symbol specifications to meet the difficult lighting required to be displayed on the bridge in a variety of lighting circumstances.
A. S – 57.
B. S – 52.
C. S – 63.
D. S – 104.
B. S-52.
This which includes a legend of symbols used in ENC’s should be installed on all type approved ECDIS.
ECDIS chart one
Layers are categorized as either -, S, O Which of the below matches with the symbol.
A. Items that can be displayed when chart object display is in standard mode.
B. Items can be displayed when object display is in other mode.
C. Items that can be displayed when chart object display is in base mode
D. All of the above.
- : D. All of the above.
S : A. Items that can be displayed when the chart object display is in standard mode.
O : B. Items that can be displayed when the object display is in other mode.
What is the recommended calculation for finding safety depth?
Safety depth = draft + squat + required under keel clearance - height of tide
True or false safety contours can be set for vector charts only
True
Which of the following describes safety contour?
A. This is a set value that distinguishes between safe and unsafe water
B. This is a set value by the operator that serves to detect the depth that are to navigation.
C. This is a set value that distinguishes when the vessel Will be affected by shallow water effect.
D. None the above.
A. this is a set value that distinguishes between safe and unsafe water. It also generates an alarm and warnings against your planned and monitoring route.
What are the three different types of contours?
- Shallow contour
- Safety contour.
- Deep contour.
True or false all ECDIS systems are equipped with a parallel indexing line tool.
False
What is an option if the ship has to proceed over soundings that are less than the contour but greater than the safety depth?
A. Turn off the danger detection area
B. Reduced to safety contour value to a lower contour.
C. Both of the above are options
D. None of the above.
C. both of the above are options however, reducing the safety contour value will risk removing the automatic alarm
True or false LDL‘s are constructed manually by the operator.
True, they are an option if the ship has to proceed over soundings of less than the contour but greater than the safety depth and the safety contour is reduced
This is a standard navigation tool created to indicate how close the bridge can get to the danger in order for the greatest extremity with the ship to have sea room for:
1. The full length of the ships swing circle up to the danger
2. He reduced distance to the danger, necessitating a certain angle of steerageway.
Clearing bearings
How can clearing bearings be used?
A. To provide the conning officer with a conspicuous object reference plan to visually cross check position by using the Gyro azimuth circle, and assess the distance the ship is from the LDL.
B. To provide the chart or ECS operator a line of reference that indicates the point in which the bridge must not pass to prevent either of the below:
1. The full length of the ships swing circle up to danger.
2. A reduced distance to the danger necessitating a certain angle of steerageway.
C. All the above.
C. All the above.
True or false an LDL is time dependent because it’s based on the height of tide
True
This facility is available to ECDIS operators who wish to plot a more formal chart correction rather than user maps
Manual chart updates
True or false T and Ps are downloaded from the UKHO site and manually plotted
True
How can chart updates be verified?
A. Check the chart correction log for confirmation that the weekly updates have been applied.
B. Click on a random ENC to identify when it was last updated.
C. Review review the spot check log proving checks are completed to ensure physical plotting after auto updates applied
D. All of the above.
D. All of the above.
Admiralty information overlay contains all:
A. Temporary and preliminary notice to Mariners.
B. Weekly noticed to mariner corrections
C. Yearly noticed to mariner corrections.
D. None of the above.
A. Temporary and preliminary notice to Mariners.
True or false safe navigation is only possible if the navigator is always conscious of the quality of sensor input, the accuracy and reliability of the display
True
GNSS signal in space will provide a worst case pseudo range, accuracy of _______ at a _______ confidence level.
A. 2.3 m / 85%
B. 5.6 m / 95%
C. 7.8 m / 95%
D. 15.5 m / 99%
C. 7.8 m / 95%
This is the quickest and most real time method of gaining confidence in the GNSS position.
A. Visual bearings.
B. Radar bearings.
C. RIO
D. None of the above.
C. RIO Radar image overlay
If radar image is added to ECDIS display the chart and radar image should match in:
A. Scale
B. Projection.
C. Orientation.
D. All of the above.
D. All of the above.
Which ECDIS should radar image overlay be placed. Primary or Secondary
On the secondary ECDIS so that it does not clutter the primary
AIS is independent of radar and can generally provide positive identification of ships in a range of:
A. 20 NM
B. 25 NM
C. 30 NM
D. 15 NM
C. 30 NM
True or false if the ships position is derived from manual LOP, then it will only be applied on the ECDIS when operating in DR mode.
True
When three LOP’s have been placed what are the two options for ECDIS users?
- Record for verifying sensor position.
- DR automatically changes positions source to DR mode based on position and time of fix.
What is the mode called when GNSS is working and the system calculates live and drift based on Gyro and log.
A. DR mode.
B. Estimated position mode
C. Set/drift mode
D. None of the above.
B. Estimated position mode.
Which describes an alarm and warning?
A. Announces by visual means.
B. Announces by audible means.
C. Announces by visual and audible means.
D. None of the above
Alarm : C. Announces by visual and audible means.
Warning : A. announces by visual means
Chart accuracies occur from what four things
- Scale. Screen messages indicate underscale, overscale or Scamin
- Source of ENC. Use of the most recent recent edition of the chart.
- Environmental changes. Buoys not in charted position, shifting seabed chart cannot display what is actually happening in terms of height of tide.
- Datum’s
If it is necessary to change the datum users should do so on:
A. The ECDIS
B. The GNSS receiver.
C. The specific chart
D. It is never necessary to change the datum.
B. The GNSS receiver.
During route monitoring the ECDIS should alarm indicate what? 6 things note
- ECDIS should give an alarm if within a specific time set by the mariner own ship, will cross the safety contour.
- ECDIS should give an alarm or indication as selected by the mayor if within a specific time set by the mirror own ship will cross the boundary of a prohibited area of a geographic area which special conditions exist.
- An alarm should be given when the specified cross track limit for deviation from the planned route is exceeded.
- An indication should be given to the mariner, if continuing on its present course and speed over a specified time or distance set by the mariner own ship will pass closer than a user specified distance from a danger.
- An alarm should be given by ECDIS when the ship reaches a specified time or distance set by the mariner in advance of a critical point on the plan route.
- The positioning system in the SENC should be on the same geodetic data. ECDIS should give an alarm if this is not the case.
What alarms should the ECDIS give in regards to sensor alarms and indications? Note 3 things
- ECDIS should provide an alarm when input from position or speed source has lost
- The ships position should be derived from a continuous positioning system of an accuracy, consistent with the requirements of safe navigation. Whenever possible is second independent positioning source, preferably a different type should be provided in such cases ECDIS should be capable of identifying discrepancies between the two sources.
- ECDIS and added navigation information should use common reference system if this is not the case an indication should be provided.
What are the four stages of passage planning?
- Appraisal.
- Planning.
- Execution.
- Monitoring.
The passage plan should be approved by the master prior to sailing and must be kept on board the ship for :
A. Three months.
B. Six months.
C. 12 months.
D. Two years.
C. 12 months.
True or false it is very important that the ECDIS is configured directly before route creation
True
What are the five key functions that exist to within route planning element?
- Waypoint editor.
- Linking manual corrections to specific routes.
- Route timing.
- Configuration of safety settings for the route.
- Route checking.
Before using a route for navigation, which which of the following needs to happen?
A. The route should be checked by the entire Bridge team.
B. Departure
C. The route should be checked for potential dangers.
D. LOPs should be established.
C. The route should be checked for potential dangers.
Before connecting a scan to check out one of the most important aspects is to ensure that:
A. You know the departure date, and time
B. Sensors like GPS and echo sound have been checked and verified to be working correctly.
C. The correct safety contour settings have been applied.
D. All of the above
C. The correct safety contour settings have been applied.
Route scanning process only works for these types of charts?
ENC
The route must be checked on:
A. Creation.
B. During editing.
C. Post chart updates.
D. All the above.
D. All the above.
What is the acronym on the route display for : to WPT
To the active waypoint
What is the acronym on the route display for : DIST
Distance from own ship to the waypoint
What is the acronym on the route display for : BRG
Bearing from own ship to the waypoint
What is the acronym on the route data for : Drift
Set and drift
What is the acronym on the route data for : ROUTE
ETA at final waypoint
What is the acronym on the route data for : PAIR
TCS Planned and actual courses
What is the acronym on the information panel for : To WPT
The number of the active waypoint
What is the acronym on the information panel for : TTG
Time to go to the active waypoint
What is the acronym on the information panel for : ETA
ETA at the active waypoint
What is the acronym on the information panel for : XTD
Distance own ship is off track
What is the acronym on the information panel for : CRS
Planned course
What is the acronym on the information panel for : Next WPT
The next waypoint after the active waypoint
True or false all ECDIS systems are fitted with a function that will automatically look ahead for dangers
True
This is actively scanning the defined area ahead of your ship, looking for dangers.
A. Safety contour
B. Warning detection vector, and sector
C. Danger detection vector and sector.
D. Obstruction detector vector in sector
C. Danger detector vector and sector.
In this motion, the chart stays fixed while the ship moves across it.
True motion
In this motion, the system places on ship at the center of the chart display which are moves under own ship.
Relative motion
In this motion, the chart is displayed irrespective of own ship position when the ship reaches the edge of the display, it will disappear from the screen
Free motion
True or false in true motion north up rotational are the only orientations available
True
This orientation allows the chart to be rotated as required in 1° steps.
Rotation
When using this function on ECDIS, you must know whether any datum position is ground or seas stabilized.
A. MOB/SAR
B. LOP
C. PI
D. Route Planning
A. MOB/SAR
Generally, how many search and rescue patterns are available on most ECDISs?
3
What are the two commonly accepted options as adequate back up ECDIS arrangements?
- Second ACDIS connected to an independent power supply in a separate GNSS position input.
- An appropriate folio of up-to-date, official paper charts for the intended voyage.
After a power blackout, how long is an uninterrupted power supply required to operate an ECDIS.
A. 15 minutes.
B. 30 minutes.
C. 45 minutes
D. One hour.
B. 30 minutes.
How long will an ECDIS voyage recording automatically save an archive the ships history for?
A. Minimum 24 hours
B. Minimum 12 hours
C. Minimum 6 hours
D. Minimum 48 hours
B. Minimum 12 hours
Why may an ECDIS operator wish to do a live capture of the image on the screen?
NOTE
- To gain an image of part of the passage, plan for printing and including in the passage plan.
- To gain a quick hardcopy of an incident or near miss recording on the screen..
- For training purposes for a Bridge team briefing on either a future or past passage plan.
- If required to provide evidence of events on passage, such as LOP if the system does not record such events..
- To export an image of an any anomalies witnessed at C for passing on HOs, OEM’s, etc..