SYMBOLS, ABBREVIATIONSAND TERMS

used on nautical charts

SIGNES CONVENTIONNELS,ABRVIATIONS ET TERMES

utiliss sur les cartes marines

PUBLISHED BY THE CANADIAN HYDROGRAPHIC SERVICE Fisheries and Oceans Canada 2011

PUBLI PAR LE SERVICE HYDROGRAPHIQUE DU CANADA Pches et Ocans Canada 2011

CONTENTS MATIRESINTRODUCTIONand Schematic Layout

INTRODUCTIONet disposition schmatique

GENERAL GNRAL

A Chart Number, Title, MarginalNotes

A Numro de la carte, Titre, Indicationsmarginales

B Positions, Distances,Directions, Compass

B Positions, Distances, Directions,Compas

TOPOGRAPHY TOPOGRAPHIE

C Natural Features C Entits naturelles

D Cultural Features D Entits artificielles

E Landmarks E Amers

F Ports F Ports

G Topographic Terms G Termes topographiques

HYDROGRAPHY HYDROGRAPHIE

H Tides, Currents H Mares, Courants

I Depths I Profondeurs

J Nature of the Seabed J Nature du fond marin

K Rocks, Wrecks, Obstructions K Roches, paves, Obstructions

L Offshore Installations L Installations au large

M Tracks, Routes M Voies, Routes

N Areas, Limits N Zones, Limites

O Hydrographic Terms O Termes hydrographiques

AIDS AND SERVICES AIDES ET SERVICES

P Lights P Feux

Q Buoys, Beacons Q Boues, Balises

R Fog Signals R Signaux de brume

S Radar, Radio, SatelliteNavigation Systems

S Radar, Radio, Systmes de navigationpar satellites

T Services T Services

U Small Craft U Embarcations

ALPHABETICAL INDEXES INDEX ALPHABTIQUES

V Index of Abbreviations V Index des abrviations

W International Abbreviations W Abrviations internationales

X List of Descriptions X Liste descriptive

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INTRODUCTION INTRODUCTION

CHART NO. 1 contains the symbols, abbreviationsand terms used on navigation charts published bythe Canadian Hydrographic Service, which arebased upon the Chart Specifications of theInternational Hydrographic Organization.

IHO REFERENCE NUMBER. The IHO haspublished a standard list of symbols, abbreviationsand terms from a publication called INT 1 whichCanada follows. It assigns a letter to each majorcategory of charted features (such as D forcultural features) and a number to each symbol orabbreviation within a category.

LONGITUDES are referred to the Meridian ofGreenwich.

BEARINGS on charts refer to the true compassand are measured from 000 clockwise to 359.

CHART DATUM is the plane of reference forsoundings and is stated in the title of each chart.Supplementary information may be given in atable, note or graph. Chart datum is the low waterplane to which are referenced the depths of waterover features permanently covered by the sea andthe elevations of those features which areperiodically covered and uncovered. Some lowwaters can be expected to fall below chart datum.This only occurs under certain astronomicalconditions, but, where the range of tide is small,meteorological disturbances may cause evenaverage tides to fall below chart datum.In tidal waters, the CHS uses the level of LowerLow Water, Large Tide or Lowest Normal Tide asits reference plane for chart datum. In non-tidalwaters, a low water level is adopted as datum.

DEPTHS. The units used for soundings (metres,fathoms or feet) are stated in the title of the chart.On metric charts, the legend METRIC/MTRIQUEset in large type and printed in magenta isdisplayed in the border of the chart. Depths areexpressed in the following ways on Canadiancharts:

Metres and Decimetres up to 21 metresand in Metres only in depths greater than21 metres.

a.

Metres and Decimetres up to 30 metresand in Metres only in depths greater than30 metres.

b.

Fathoms and Feet up to 11 fathoms and inFathoms only in depths greater than 11fathoms.

c.

Fathoms and fraction of fathoms on a fewolder charts.

d.

Feet.e.

On certain charts for use by deep-draught vesselsand where the depth information is sufficientlyprecise, soundings between 21 metres (11fathoms) and 31 metres (16 fathoms) may beexpressed in metres and decimetres (fathoms and

La Carte n 1 comprend la liste des signesconventionnels, abrviations et termes utiliss dans lescartes marines publies par le Service hydrographiquedu Canada (SHC), conformment au Rglement de l'OHIpour les cartes internationales (INT) et spcifications del'OHI pour les cartes marines.

NUMRO DE RFRENCE DE LOHI. LOHI a publiune liste type des signes conventionnels abrviations ettermes (INT1) laquelle le Canada se conforme. La listeattribue une lettre chaque catgorie principale dentitsportes sur les cartes marines (comme D pour lesentits artificielles) et un numro chaque signeconventionnel ou abrviation dans chacune descatgories.

LES LONGITUDES se rapportent au Mridien deGreenwich.

LES RELVEMENTS se rapportent au compas vrai etvont de 000 359, dans le sens des aiguilles dunemontre.

LE ZRO DES CARTES est le plan de rfrence dessondes et est mentionn dans le titre de chaque cartemarine. Des informations supplmentaires peuvent tredonnes sous la forme de tables, de notes ou degraphiques. Le zro des cartes est le niveau de bassemer auquel se rapportent les profondeurs des eauxcouvrant des entits en permanence et laltitude decelles qui sont priodiquement submerges. Certainesbasses mers peuvent tre infrieures au zro des cartes.Ce phnomne ne se produit que dans certainesconditions astronomiques, mais des perturbationsmtorologiques peuvent faire tomber des maresmoyennes en dessous du zro des cartes, lorsquelamplitude de la mare est peu importante.Le SHC utilise la basse mer infrieure, grande mare oula mare normale la plus basse comme niveau derfrence pour le zro de ses cartes couvrant les eauxtidales. Dans les eaux non tidales, cest le niveau debasses eaux qui est utilis comme zro des cartes.

PROFONDEURS. Les units utilises (mtres, brassesou pieds) sont indiques dans le titre de la carte marine.La lgende MTRIQUE/METRIC, en gros caractresmagentas, est inscrite dans la marge des cartesmtriques. Les profondeurs sont exprimes de faonsuivante sur les cartes marines canadiennes :

en mtres et dcimtres pour les profondeurs de21 m ou moins et en mtres seulement pour lesprofondeurs suprieures 21 m,

a.

en mtres et dcimtres pour les profondeurs de30 m ou moins et en mtres seulement pour lesprofondeurs suprieures 30 m,

b.

en brasses et pieds pour les profondeurs de 11brasses ou moins et en brasses seulement pourles profondeurs suprieures 11 brasses,

c.

en brasses et fractions de brasses sur quelquescartes marines plus anciennes,

d.

en pieds.e.

Sur certaines cartes marines destines aux btiments

4

feet). The geographical position of a sounding isthe centre of the depth figure.

DRYING HEIGHTS. Underlined figures on dryingareas or in brackets against features areelevations above chart datum. Where the dryingelevation figure cannot be placed in its exactposition, it is placed close to it and enclosed inbrackets.

ELEVATIONS AND VERTICAL CLEARANCES. Oncharts of tidal waters, elevations of lights, islands,etc., and vertical clearances under structures suchas bridges and power lines are normally givenabove Higher High Water, Large Tide. On chartsof non-tidal waters, elevations and verticalclearances are normally given above chart datum.The datum for elevations and clearances is alwaysstated in the chart title. When an elevation figurecannot be placed on the feature, it is placed closeto it and enclosed in brackets. On metric charts,the vertical clearance is given in metres anddecimetres up to 10.0 metres and in whole metresthereafter. On non-metric charts the verticalclearance is given in feet.

HORIZONTAL DATUM. The name and date of thehorizontal datum used for a chart are shown in thetitle with a statement, where appropriate, about thecorrections to be applied to the geographicalpositions to convert them to the internationalreference system of the internationally recognizedregional datum.

SCALES. The natural scale is the ratio between ameasurement on the chart and the actual distanceon the surface of the earth. It is expressed with anumerator of 1 (e.g. 1:200 000).

INTERNATIONAL NAUTICAL MILE. Theinternational nautical mile is equal to 1852 metres(6076.1 feet). For practical purposes, the SEAMILE is used for expressing distances. A sea mileis the length of one minute of arc, measured alongthe meridian, in the latitude of the position.

CHART COLOURS AND SYMBOLOGY. Thecolour presentation and size of symbology onCanadian charts is not always in accord with thatshown in this publication. Lettering styles andcapitalization vary considerably on chartspublished by the CHS and may not be exactly asshown in this publication; however, no change inmeaning is implied by these differences.

LORAN-C. Charts that include a latticeoverprinting are identified by the prefixes L(C), L/Cor LC shown next to the chart number.

CHART REFERENCE. Where the limits orreferences to larger-scale charts are shown, theyshould normally be used as they contain furtheressential navigational information.

COPYRIGHT. Canadian Hydrographic Servicecharts are copyrighted and may not be reproducedin whole or in part without the written permission of

fort tirant deau et lorsque les profondeurs sontsuffisamment prcises, les sondes situes entre 21 m(11 brasses) et 31 m (16 brasses) de pr