ECDIS Hand-outs 2

ECDS Revision 1.21 20090724

The Operational Use of Electronic Chart Display and Information Systems (ECDIS)

Part 1 – Legal Aspects, History and Regulations

Philippine Seafarers Training Center

To enhance navigational safety by the safe operation of ECDIS equipment,

proper use of ECDIS related information and

knowledge of the limitations of ECDIS equipment.

Objective

ECDS Revision 1.21 20090724 Philippine Seafarers Training Center

Legal Aspects and Requirements

The STCW and ISM Codes put the responsibility firmly on the shipowner to ensure that mariners on their vessels are

competent to carry out the duties they are expected to perform.


Legal Aspects and Requirements

If a ship is fitted with ECDIS, the shipowner has a duty to ensure that users of such a system

are properly trained in the operation and use of electronic charts and are familiar with the

shipboard equipment before using it operationally at sea.


STCW 95Table A-II/1Navigation at the Operational Level

Thorough knowledge of and ability to use navigational charts and publications, such as sailing directions, tide tables, notices to mariners, radio navigational warnings and ship’s routeinginformation

Note: ECDIS systems are considered to be included under the term “charts”


SOLAS Chapter V

Regulation 2 - Definitions

Nautical chart or nautical publication is a special-purpose map or book, or a specially compiled database from which such a map or book is derived, that is issued officially by or on the authority of a Government, authorized Hydrographic Office or other relevant government institution and is designed to meet the requirements of marine navigation.


SOLAS Chapter V

Regulation 19 – Carriage Requirements

2.1 All ships irrespective of size shall have:

2.1.4 nautical charts and nautical publications to plan and display the ship’s route for the intended voyage and to plot and monitor positions throughout the voyage; an Electronic Chart Display and Information System (ECDIS) may be accepted as meeting the chart carriage requirements of this subparagraph;


SOLAS Chapter V


2.1.5 back-up arrangements to meet the functional requirements of subparagraph 2.1.4, if this function is partly or fully fulfilled by electronic means.


SOLAS Chapter V


PAPER CHARTS

ECDIS

ECDIS

PAPER CHARTS

ECDIS

++

“Chart-Radar” is a radar-based system meeting the IMO Performance Standards of IMO Resolution A.477 (XII), as amended by MSC.64(67)

ECDIS + CHART RADAR


SOLAS Chapter V

Regulation 19 – Carriage RequirementsIn cases where ECDIS only is used, you MUST carry “Official Electronic Navigational Charts (ENC’s)” on board. Official ENC’s are produced by the National Hydrographic Offices in each country.

In areas where ENC’s are not available, ECDIS may operate in the Raster Chart Display System (RCDS) mode. In the RCDS mode Raster Navigational Charts (RNC’s) can be used to meet SOLAS carriage requirements, only if allowed and approved by the flag state.


SOLAS Chapter V

Regulation 19 – Carriage RequirementsDue to the limitations of RNC’s as compared to ENC’s, IMO Performance Standards require that “an appropriate portfolio of up-to-date paper charts” be carried when operating ECDIS in the RCDS mode of operation.

In areas where ENC’s or RNC’s are not available, ships must carry all paper charts necessary for the intended voyage.


Appropriate PortfolioAppropriate Portfolio of up-to-date paper Charts (APC)

means a suite of paper charts of a scale to show sufficient detail of topography, depths, navigational hazards, aids to navigation, charted routes, and routeingmeasures to provide the mariner with information on the overall navigational environment.

The APC should provide adequate look-ahead capability. Coastal States will provide details of the charts which meet the requirement of this portfolio, and these details are included in a worldwide database maintained by the IHO.ECDS Revision 1.21 20090724 Philippine Seafarers Training Center

SOLAS Chapter VRegulation 27 – Nautical Charts & Nautical Publications

Nautical charts and nautical publications, such as sailing directions, lists of lights, notices to mariners, tide tables and all other nautical publications necessary for the intended voyage, shall be adequate and up to date.


• 1982 - Japanese fishing vessels started using video plotters

• 1984 - More than 2000 were in use -mostly on tankers

• Computers became more powerful and cheaper

History of ECDIS


Several manufacturers were now developing electronic chart systems, it was of immediate importance to all concerned to have at least a first draft of the IHO and IMO guidance for both the Electronic Navigational Chart (ENC) and it’s display systems (ECDIS).

History of ECDIS


• 1986 - The IMO, IHO, IEC and several other International organizations form committees and working groups to develop standards for ECDIS.

• The IHO establish a Committee on ECDIS (COE) which later became called the Committee on Hydrographic Requirements for Information Systems (CHRIS).

History of ECDIS


• 1987 - The IHO/COE developed the first draft standards for chart content, display & updating (S-52) and also the transfer standard for digital hydrographic data (S-57).

• 1989 - The IMO/IHO Harmonization Group on ECDIS (HGE) developed draft performance standards for ECDIS based around IHO’s standards for electronic chart content and display (S-52) and digital hydrographic data (S-57).

History of ECDIS


• 1990 – The DX-90 Data Exchange Standard is developed primarily by NOAA.

• 1992 – The IHO officially adopt S-57 as the Hydrographic Data Transfer Standard at the 14th International Hydrographic Conference in May 1992.

History of ECDIS


• 1993 - The IMO Sub-Committee on the Safety of Navigation (NAV) endorse the Provisional Performance Standards for ECDIS and submit to the Maritime Safety Committee (MSC) for approval and submission to the 1995 IMO Assembly for adoption.

History of ECDIS


IMO Performance Standards for Electronic Chart Display and Information Systems (ECDIS)

Adopted on 23rd November 1995

by IMO Resolution A.817(19)

IMO Resolution A.817(19)

Consists of 15 sections and 5 Appendix


• 1996 - The DX-90 data transfer standard was transformed into S-57 and released as Edition 3.0 in November 1996.

S-57 Hydrographic Data Transfer Standard


In 1996 IMO Resolution A.817(19) was amended by Resolution MSC.64(67)

This Resolution added a new appendix to the annex to Resolution A.817(19)

Appendix 6 - Back-Up Requirements

Adopted 4th December 1996

This describes the functional and operational requirements to enable the timely transfer to the back-up system to

allow the vessel to be navigated safely until the termination of the voyage.

Resolution MSC.64(67)


International Electrotechnical Commission (IEC) publishes International Standard IEC 61174

Electronic Chart Display and Information System (ECDIS) –Operational and Performance Requirements, Methods of

Testing and Required Test Results

First Edition 1998-08

IEC 61174


IMO

MSC

NAV

Res A.817(19)

IEC

TC80

WG7

IEC 61174

IHO

WEND CHRIS

S-52 Specification for chart contents

S-52 Ann 1 Guidance Update

S-52 Ann 2 Colours and Symbols

S-52 Ann 3 Glossary of Terms

S-57 IHO Transfer Standard

DGIWG ISO CIRM

HGE

International Organizations Involved in ECDIS

Navigation and Safety

Equipment & Testing

Chart Content, Display and Updating

Other OrganizationsECDS Revision 1.21 20090724 Philippine Seafarers Training Center

• IMO – International Maritime Organization• MSC – Maritime Safety Committee• NAV – Safety of Navigation Sub-Committee

• IHO – International Hydrographic Organization• WEND – Worldwide ENC Database• CHRIS – Committee on Hydrographic Requirements for

Information Systems



• IEC – International Electrotechnical Commission• TC80 – IEC Committee on Maritime Navigational Chart

Database• WG 7 – IEC Working Group on ECDIS

• HGE – Harmonization Group on ECDIS

• DGIWG – Digital Geographic Informational Working Group

• ISO – International Organization for Standards• CIRM – Committee International Radio-Maritime



In 1998 IMO Resolution A.817(19) was amended by Resolution MSC.86(70)

This Resolution added another new appendix to the annex to Resolution A.817(19)

Appendix 7 - RCDS Mode of Operation

Adopted 8th December 1998

This states the requirements to permit the operation of ECDIS equipment in RCDS mode in areas where no ENC chart

coverage is provided.

Resolution MSC.86(70)


The worlds first type approved ECDIS system was certified by the German organization BSH, to Transas in 1999.

ECDIS Type Approval

Navi-Sailor 2400


IEC 61174

In 2001 the International Electrotechnical Commission (IEC) publishes a revision of International Standard IEC

61174

Electronic Chart Display and Information System (ECDIS) – Operational and Performance Requirements, Methods of Testing and Required Test Results

Second Edition 2001-11


HSC Code

The first mandatory carriage requirement of ECDIS was onboard High-Speed Craft as follows:

• craft constructed on or after 1 July 2008;

• craft constructed before 1 July 2008, not later than 1 July 2010.


The Safety of Navigation Sub-Committeemeeting in 2006 (NAV52) taking into accountthe technological progress and experiencegained recognized the need to improve thepreviously adopted resolution A.817(19), asamended, performance standards for ECDIS inorder to ensure the operational reliability ofsuch equipment.

NAV52


Revised Performance Standards for Electronic Chart Display and Information Systems (ECDIS)

Adopted on 5th December 2006

by IMO Resolution MSC.232(82)

Entered into force on 01 January 2009

IMO Resolution MSC.232(82)

Consists of 16 sections and 7 Appendix


IEC 61174

In 2008 the International Electrotechnical Commission (IEC) publishes a revision of International Standard IEC

61174

Electronic Chart Display and Information System (ECDIS) – Operational and Performance Requirements, Methods of Testing and Required Test Results

Edition 3.0 2000-09


NAV54

At the July 2008 meeting of the Safety of Navigation Sub-Committee (NAV54) agreement was reached on an implementation schedule for mandatory ECDIS on vessels.

With agreement having finally been reached, IMO followed the necessary steps to add this requirement to IMO's Safety Of Life At Sea (SOLAS) Convention.


SOLAS Chapter VRegulation 19 – Carriage Requirements2.1 All ships irrespective of size shall have:

2.1.4 nautical charts and nautical publications to plan and display the ship’s route for the intended voyage and to plot and monitor positions throughout the voyage; an Electronic Chart Display and Information System (ECDIS) is also accepted as meeting the chart carriage requirements of this subparagraph. Ships to which paragraph 2.10 applies shall comply with the carriage requirements for ECDIS detailed therein;


SOLAS Chapter V

2.10 Ships engaged on international voyages shall be fitted with an Electronic Chart Display and Information System (ECDIS) as follows:

.1 passenger ships 500 gross tonnage and upwards constructed on or after 1 July 2012;

.2 tankers of 3,000 gross tonnage and upwardsconstructed on or after 1 July 2012;.3 cargo ships, other than tankers, of 10,000 gross tonnage and upwards constructed on or after

1 July 2013;.4 cargo ships, other than tankers, of 3,000 gross tonnage and upwards but less than 10,000 gross tonnage constructed on or after 1 July 2014;


SOLAS Chapter V

.5 passenger ships 500 gross tonnage and upwards constructed before 1 July 2012, not later than the first survey on or after 1 July 2014;

.6 tankers of 3,000 gross tonnage and upwards constructed before 1 July 2012, not later than the first

survey on or after 1 July 2015;.7 cargo ships, other than tankers, of 50,000 gross tonnage and upwards constructed before 1

July 2013, not later than the first survey on or after 1 July 2016;


SOLAS Chapter V.8 cargo ships, other than tankers, of 20,000

gross tonnage and upwards but less than 50,000 gross tonnage constructed before 1 July 2013, not later than the first survey on or after 1 July 2017; and

.9 cargo ships, other than tankers, of 10,000 gross tonnage and upwards but less than 20,000 gross tonnage constructed before 1 July 2013, not later than the first survey on or after 1 July 2018;

2.11 Administrations may exempt ships from the application of the requirements of paragraph 2.10 when such ships will be taken permanently out of service within two years after the implementation date specified in subparagraphs .5 to .9 of paragraph 2.10.


Structure of ECDIS

DATABASE

SENCs

MONITOR AND CONTROLS

CPU

INPUT SENSORS

POSITION (WGS84)

GYRO HEADING

SPEED LOG

ECDIS Software


ECDIS Configuration

TRANSAS Navi-Sailor 3000 ECDIS ConfigurationECDS Revision 1.21 20090724 Philippine Seafarers Training Center

NMEA 0183

GPS

WIND

YEOMAN

AUTOPILOT

ARPA X-Band

NMEA OUTPUTECDIS

LOG

GYRO

ECHO SOUNDER

WATER TEMP

NAVTEX

AIS

DGPS

VDR

ARPA S-Band

The NMEA 0183 Interface Standard defines electrical signal requirements, data transmission protocol and time, and specific sentence formats for a serial data bus.

Most sentences begin with a $ followed by a two character talker ID and three character sentence identifier.

Exception is AIS which transmits a sentence beginning with !


Cycle of Operation

INPUT SENSORS

PC

MOUSE

MONITOR

OOW

LATITUDE

LONGITUDE

SPEED

COURSE


Datums

• Datum used by Electronic Charts is WGS84

• The positioning system (GPS) must be set to WGS84 also, so that the ship is displayed in the correct position on the chart display

• There will often be a different datum on the paper chart. This difference is known as the datum shift. Understanding of this difference is vital to safety


WGS 84

Position Shifts from Datum Differences in Comparison With WGS 84ECDS Revision 1.21 20090724 Philippine Seafarers Training Center

Definition of ECDIS

Electronic Chart Display and Information System(ECDIS) means a navigation information systemwhich with adequate back-up arrangements can beaccepted as complying with the up-to-date chartrequired by regulations V/19 and V/27 of the 1974SOLAS Convention, as amended, by displayingselected information from a system electronicnavigational chart (SENC) with positionalinformation from navigation sensors to assist themariner in route planning and route monitoring,and if required display additional navigation-relatedinformation.


Definition of ENC

Electronic Navigational Chart (ENC) means the database, standardized as to content, structure and format, issued for use with ECDIS by or on the authority of a Government, authorized Hydrographic Office or other relevant government institution, and conform to IHO standards. The ENC contains all the chart information necessary for safe navigation and may contain supplementary information in addition to that contained in the paper chart (e.g., sailing directions) which may be considered necessary for safe navigation.


Definition of System ENC (SENC)

System Electronic Navigational Chart (SENC) means a database, in the manufacturer’s internal ECDIS format, resulting from the lossless transformation of the entire ENC contents and its updates. It is this database that is accessed by ECDIS for the display generation and other navigational functions, and is equivalent to an up-to-date paper chart. The SENC may also contain information added by the mariner and information from other sources.


Displaying the ENCDATA SOFTWARE DISPLAY

IHO S-57

IHO S-52

ENC Transformed into SENC

SENC

ENC 1

ENC 2

ENC 3

(PresLib Ed 3.4)

(ECDIS Kernel)

ENC


Definition of RCDS

Raster Chart Display System (RCDS) means a navigation information system displaying RNC’s with positional information from navigation sensors to assist the mariner in route planning and route monitoring, and if required, display additional navigation-related information.


Definition of RNC

Raster Navigational Chart (RNC) means a facsimile of a paper chart originated by, or distributed on the authority of, a government-authorized hydrographic office. RNC is used in these standards to mean either a single chart or a collection of charts.


Definition of System RNC (SRNC)

System Raster Navigational Chart Database (SRNC) means a database resulting from the transformation of the RNC by the RCDS to include updates to the RNC by appropriate means.


ECDIS / RCDS mode

ECDIS equipmentType-approved?

Adequate ENC coverage?

ENC with updates onboard? ECDIS

RCDS mode

RNC data and service?RCDS capable?

ECS equipment ECS“Other” EC data

Yes Yes Yes

Yes Yes

No

No

No

No

No

RCDS mode does not have the full functionality of ECDIS, and can only be used together with an appropriate portfolio of up-to-date paper charts.


ENC CellAn S-57 ENC chart is also called a cell which has a defined geographical coverage and intended navigational usage.

It is defined in ECDIS as the basic unit of ENC data covering a defined geographical area bounded by two meridians and two parallels.

Data of cells of the same usage do not overlap, enabling a seamless chart display.

The size of a cell must not exceed 5 megabytes.


ProjectionsENC chart cells come without geographic projection, only defined coordinates. The ECDIS software provides the geographic projection for display. The following projections are typically provided:

None

Cylindrical (Mercator)

Cylindrical (Transverse Mercator)

RADAR Projection (Equidistant)

Orthographic

Stereographic

GnomonicECDS Revision 1.21 20090724 Philippine Seafarers Training Center

ProjectionsCylindrical (Mercator)– Tangent Equator

N

S

N

SCylindrical (Transverse Mercator)– Tangent along meridian

(Good for higher Latitudes)


Projections

A – GnominicB – StereographicC - Orthographic

A B

C

C

C


Modes

Open sea

Coastal

Confined waters

(Confined waters includes narrow waters, harbourareas, anchorage and pilotage areas)


Display Base

Display Base means the chart content as listed in appendix 2 of Resolution MSC.232(82) and which cannot be removed from the display.

It is permanently retained on the display.

It is not intended to be sufficient for safe navigation.


Standard Display

Standard Display is the display mode intended to be used as a minimum during route planning and route monitoring.

The chart content is listed in appendix 2 of Resolution MSC.232(82).

Displayed at switch-on, recalled by single operator action.


Appraisal

Use the digital chart catalogue

PlanningCreate the route on updated charts

Check the route

Save the route

Passage / Route Planning


ExecutionExecute the route as planned

MonitoringMonitor the vessels progress along the

planned route

Physically - by observation

Automatically - alarms on the ECDIS

Passage / Route Planning


The Operational Use of Electronic Chart Display and Information Systems (ECDIS)

Part 2 – Principal Types of Electronic Charts (ENC & RNC)


Electronic ChartsARCS

BSB

ENCTransas TX97


The Basic Difference

• Raster charts are simply bitmap images created by scanning a paper chart

• Vector charts portray charted features as points, lines, or areas with amplifying information (attributes) found in an associated database


Digital Spatial Data

Raster

Vector

Real WorldECDS Revision 1.21 20090724 Philippine Seafarers Training Center

Raster format charts are produced by :

Scanning the original paper charts

Raster Charts


• A set of colored pixels representing chart information as a picture on computer screen

• Simply an array of pixels arranged in rows and columns

• Pixels are color coded, but do not represent features explicitly

Raster Charts


• Looks like a paper chart

• Cheap and easy to produce (scan existing paper chart)

• Runs easily on PC

• World-wide availability

The Appeal of Raster Charts


A Raster Chart

ARCS chart of River Humber, UKECDS Revision 1.21 20090724 Philippine Seafarers Training Center

• An intelligent form of digital geographic data where real world objects are represented by points, lines and polygons. An objects representation is described by attributes and coordinates.

• Examples include: – Digitized Maps – GIS Data

Vector Data


Digital Vectorized Charts

Digital technology is used to develop electronic charts from traditional paper charts and directly from marine survey data.

• Digitizer (in tabular form – old)

• Scan and digitize electronically


Feature Entities

• simple point

• simple line

• simple polygon

• complex

River Spatial Data

Attribute Data

LENGTH WIDTH

2035.00 25.00

ID

1

2 525.00 18.00

#1 #2

A Feature consists of both the spatial data linked with its attributes in a feature table.

Feature Entities


Presenter

Presentation Notes

Feature Entities: Simple point: a simple point feature is composed of one (or more) nodes. Multiple point features may exist at a single node (such as points at the same (x,y) location with different elevations. Simple line: composed of one or more edges. May be oriented and ordered and may be closed. Simple area: A simple area feature is composed of one or more faces Complex: A complex feature is composed of more than one simple and/or complex features.

Spatial Data Analysis

•

••

•

••

••

• •

•2

51

4

7 6

Lake

Features:LinePoints:

ConnectedDetached

AreaText

•Lake

Geographic data are separatedinto themes and tiled for speed of access

Network Analysis

Vector Data


Layers of Information on a Vector Chart

Radar Tracks

Symbols

Bearing Lines

Depth Contours

Depth Numbers

Buoys, Lights

Obstacles

Basic Chart

Land Contours

Topography

Raw Radar


A Vector Chart

ENC chart of Subic Bay Freeport – Transas Navi-Sailor 2400ECDS Revision 1.21 20090724 Philippine Seafarers Training Center

ENC Chart Usage

The S-57 standard classifies digital charts into six different types of usage. The usage of a chart depends on the scale of its source.

The six types of usage are:

1. Overview (Scale Range < 1:1,499,999)

2. General (Scale Range 1:350,000 – 1:1,499,999)

3. Coastal (Scale Range 1:90,000 – 1:349,999)

4. Approach (Scale Range 1:22,000 – 1:89,999)

5. Harbour (Scale Range 1:4,000 – 1:21,999)

6. Berthing (Scale Range > 1:4,000)


ENC Intended Usage

Navigational Purpose Definition for intended use

1 Overview For route planning and ocean crossing.

2 General For navigating oceans, approaching coasts and route planning.

3 Coastal For navigating along the coastline, either inshore or offshore.

4 Approach Navigating the approaches to ports or major channels or through intricate or congested waters.

5 Harbour Navigating within ports, harbours, bays, rivers and canals, for anchorages.

6 Berthing Detailed data to aid berthing.


ENC Chart Display

Most ECDIS user interfaces only allow a selection of the chart display by range or scale, and not by chart usage.

Like traditional radar ranges, display ranges define the radius of a circular view around the centre of the screen.

The diameter of the view coincides with the vertical extent of the rectangular chart display.


Radar Overlay on ENC Charts

Radar Range Standard Scale (Rounded)200 NM 1 : 3,000,00096 NM 1 : 1,500,00048 NM 1 : 700,00024 NM 1 : 350,00012 NM 1 : 180,000

6 NM 1 : 90,0003 NM 1 : 45,000

1.5 NM 1 : 22,0000.75 NM 1 : 12,0000.5 NM 1 : 8,000

0.25 NM 1 : 4,000Table of recommended ENC chart compilation scales to facilitate display of radar video over official ENCs.


ENC Chart Identification

Each official ENC is identified by an 8 character identifier

The first two characters indicate the Producer Code

The third digit indicates the Navigational Purpose

Followed by alpha-numeric unique identifier

GB100012 – United Kingdom, Overview

US2WC12M – United States, General (last character “M” = Metric)

FR301030 – France, Coastal

PH4SBY40 – Philippines, Approach

ES504451 – Spain, Harbour

SE6D17LA – Sweden, Berthing


Underscale

In ECDIS the condition where data displayed are not the largest scale NAVIGATIONAL PURPOSE data available for that area.


Overscale

In ECDIS, to display the chart information at a display scale larger than the compilation scale.

When the data displayed is from data of two different navigational purposes the chart display will, where drawn at a larger scale, include an overscale area of data from the smaller scale cell in order to complete the display. This area should be identified by the “overscale pattern” of the presentation library.


Overscale

Overscale chart cell

Overscale chart Singapore displayed on Maris ECDIS900ECDS Revision 1.21 20090724 Philippine Seafarers Training Center

SCAMIN Attribute

The SCAMIN attribute of an object determines the display scale below which the object must no longer be displayed. Thereby the clutter on the screen of an ECDIS is reduced.For example a buoy with SCAMIN set to 50,000 will disappear from the ECDIS display when zooming out and reducing the display scale below 1:50,000.


Own Ship’s Safety Contour

In ECDIS the contour related to the own ship selected by the mariner from the contours provided for in the SENC, to be used by ECDIS to distinguish on the DISPLAY between the safe and the unsafe water, and for generating anti-grounding ALARMS

Unsafe Water Safe Water

Chart Datum

Shallow Contour

Deep Contour

Safety Contour (20m value existing in the SENC)Safety Contour (16m input value by mariner)

Four colour depth contour scheme

. .


Own Ship’s Safety Contour

Safety Contour

Selected Safety Contour 16m

Displayed Safety Contour 20mECDS Revision 1.21 20090724 Philippine Seafarers Training Center

Safety Depth

In ECDIS the depth defined by the mariner, e.g. the ship’s draft plus under keel clearance, to be used by the ECDIS to emphasize soundings on the DISPLAY equal to or less than this value

(Can not be less than Safety Contour value)


Chart Datum

Shallow Contour

Deep Contour

Safety Contour (value existing in the SENC)Safety Contour (selected by mariner)

Safety Depth

=> Safety Contour

Four colour depth contour scheme

. .


Safety Depth

Safety Depth

Selected Safety Depth 13m

Highlighted Soundings = 13m or lessECDS Revision 1.21 20090724 Philippine Seafarers Training Center

Two Colour Depth Scheme

Safe and unsafe waters can be displayed in two different colours.


Chart Datum

Safety Contour (20m value existing in the SENC)Safety Contour (16m input value by mariner)

Safety Depth 17m

Two colour depth contour scheme

177113

. .

23

Shallow Contour 10m

Deep Contour 50m


Two Colour Depth Scheme

Shallow Contour 10m

Deep Contour 50m

Safety Contour 20m

SAFE WATER

UNSAFE WATER

Safe and Unsafe watersECDS Revision 1.21 20090724 Philippine Seafarers Training Center

Presentation LibraryENC data does not contain any information concerning symbolizing; the presentation of the chart on the screen and on the display is realized by using the presentation library (PRESLIB) published in the Special Publication (S-52).

Nav53 considered the issue of maintenance of ECDIS software and agreed that proper maintenance of ECDIS software was an important issue.S/N.1/Circ.266 was issued on 22nd October 2007.

Preslib


Presentation LibraryIn January 2007, Supplement No.1 to the IHO ENC Product Specification was introduced in order to include, within the ENC Particularly Sensitive Sea Areas (PSSA) and Archipelagic Sea Lanes (ASL).

Any ECDIS which has not been upgraded to the latest version of the Product Specification or the S-52 Presentation Library may be unable to correctly display the latest charted features and may not meet the chart carriage requirements as set out in SOLAS regulation V/19.2.1.4.

S-52 Preslib Edition 3.4


Alarm systems

Horizontal datum and chart projections

Chart features simplification

Look ahead capability

Orientation for information

Display of safety contour / depth

Colours may differ

Comparison of ECDIS/RCDS



US BSB Raster Chart

US ENC Vector Chart



Orange boarder indicates RCDS mode (Transas)

US BSB Raster charts displayed on Transas Navi-Sailor 3000ECDS Revision 1.21 20090724 Philippine Seafarers Training Center


On a Raster chart lines become areas as scale is increased by zooming in.

On a Vector chart lines are displayed as lines irrespective of scale or zooming.


ENC Chart Symbols

Obstruction (foul ground)

Obstruction as isolated danger

Wreck as isolated danger

Underwater rock as isolated danger

74 Wreck of known depth

Underwater Rock (awash)

If shallower

than safety

contour


Official / Unofficial Charts

ENC

Unofficial data(up to date official paper chart required)

Border of ENC chart displaying interface between official and unofficial data


Carry discs containing all ENC and RNC charts on board and obtain a license or permit to unlock newly required charts.

Chart services using email attachments and internet access are becoming more common.

Maris MDS (Maritime Digital Service)

Admiralty AVCS (Admiralty Vector Chart Service)

Obtaining New Charts


Admiralty Digital Catalogue

UKHO Admiralty Digital Catalogue (AVCS)ECDS Revision 1.21 20090724 Philippine Seafarers Training Center

At the 16th International Hydrographic Conference, (Monaco 14-19 April 2002), the IHO Member States accepted the “SENC Delivery Option”, thus allowing that ENC data be distributed in a proprietary SENC format.

Transas (SENC service)

SevenC’s (Direct ENC)

SENC Delivery


Update/New CD of all charts every three months

AVCS includes free back-up copy

Pay to view, permit for 3 months

Update current passage (Working Folio) charts at sea via satellite

Update other charts (Standing Folio) in port via internet or from update CD

Subscriptions include Updates


ENC Chart Coverage

British Admiralty ENC chart of Dover Straits - Maris ECDIS900

Check country coverage when ordering charts.

In this example order French chart to complete coverage of Dover Straits.


Correcting Charts Automatically

SEMI-AUTOMATIC UPDATINGIn ECDIS, the application of corrections to ENC data in the SENC updating in a fully integrated state, by hard media or telecommunications transfer in a manner which requires human intervention at the ECDIS interface.

FULLY AUTOMATIC UPDATINGIn ECDIS the application of corrections to ENC data in the SENC in a fully integrated state, without human intervention.


ENC Update History

Red highlight showing applied correction to coastline

Displaying Update History to Chart GB489110 on Maris ECDIS900

GB489110 Ed.2 Update 2


Correcting Charts Manually

MANUAL UPDATINGIn ECDIS, the manual application of corrections to ENC data in the SENC by human operator, usually based on unformatted update information (such as Notices to Mariners, voice radio, verbal communications, etc.). The manual application of hand corrections to nautical charts.

LOCAL UPDATESIn ECDIS a generic term used to indicate all update information other than Official Updates, regardless of source; for application as a Manual Update only as opposed to automatic updates.


Manually Updated Chart


S-57 ENC– S-57 Edition 3.0 published Nov 1996– “frozen” for 4 yrs + 2 additional years – S-57 3.1 issued Dec 2000– S-57 Edition 4.0 (not released)– S-57 Edition 3.1.1– S-57 Maintenance Document (Cumulative)

Number 8

Current S-57 Standards


ENC chart coverage is still not entirely global.However, the UKHO who operate the Admiralty Vector Chart Service (AVCS) said it hoped to be able to cover 2,000 of the world’s top ports, which account for 98% of the world’s tonnage by the end of 2008.

AVCS provides navigators with an integrated set of electronic navigational charts (ENC’s) schemed in folios along the major shipping routes covering the world’s top ports.

Current Status – ENC Coverage


The IHO is in the process of developing an IHO GeospatialInformation Infrastructure. The core component of this willbe the S-100 Geospatial Standard for Hydrographic Dataand its associated information registry.

S-101 is intended to be the next generation ENC productspecification. It will be based on S-100. The reason formoving to S-101 is to have a more flexible standard so thatthe IHO can react quickly to changes.

However, the IHO stated during the 3rd ECDIS StakeholdersForum in November 2007 that S-101 ENC will not affect S-57 based ECDIS for the next 10 to 15 years.

Future Changes to Standards


ECDIS Hand-outs 2

Documents

Transcript of ECDIS Hand-outs 2