ENC电子海图符号说明

ENC Symbol

ExplanationGeneric isolated danger symbol– with less depth than user-selected safety contour or where the depth is unknown Sounding of low accuracy

Additional InformationWreck, rock or obstruction

501 1 RefK

ENC Symbol

ExplanationIndicates that an additional information note or picture file is available

Additional InformationThe information, note or graphic can be found using cursor enquiry

501 1 Ref

Equates to sounding of doubtful depth

I2 I14

Non-tidal current direction Spring tide– Ebb Flood Light vessel/lightfloat

H42 H41 H40 P6 Q30 Q821 26 New type of feature not yet known to ECDIS– further information available by cursor enquiry

6 stars A1 All significant seafloor features detected; very high accuracy survey 5 stars A2 All significant seafloor features detected; high accuracy survey 4 stars B 3 stars C Uncharted features dangerous to navigation are not expected but may exist; medium accuracy survey Depth anomalies may be expected; low accuracy survey or passage soundings Large depth anomalies may be expected; poor quality data Quality of bathymetry yet to be assessed Refer to cursor enquiry to access additional information Refer to ECDIS Chart 1 for more examples Refer to cursor enquiry for more information N64

Daymarks

2 stars D

U

U

New Object– Point New Object– Line New Object– Area Symbol setting on ECDIS

Caution area where a specific caution note applies

For details of the IALA Maritime Buoyage System. Refer to NP 735 Dredged area deeper than safety contour Darker blue indicates water shoaler than safety contour I20 Simplified Traditional Lateral beacons– red/green Lateral conical buoys - red/green, according to applicable IALA system Lateral can buoys– red/greenA B A B

IALA applicable system IALA applicable system Q130.1

Vertical lines indicate areas of charted data at Zoom out until vertical lines significantly smaller scale than main display disappear to view at scale appropriate to data Indicates boundary between IALA A and B buoyage systems Isolated query indicates insufficient information to symbolise the feature See NP735

IALA applicable system

Q130.1 Q130.3

Cardinal marks north/east/ south/west Query may appear alone at a point, on a line or in a defined area. Further information may be obtained from cursor enquiry of the query ECDIS/ ENC based symbol Special marks May be shown the other way around on older ECDIS. Within areas of non-ENC data, an alternative, official chart must be used for navigation Shape/topmarks are optional– colour yellow Shape/topmarks optional– colour yellow Q80 H4043 M27.2

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Query associated with symbol indicates absence of a mandatory attribute, such as beacon shape, direction or orientation AIS aid to navigation with no physical structure and Virtual AIS aid to navigation Limit between area of unofficial vector data and official ENC data, marked by orange pecked line– pecks angled towards unofficial vector data

Isola

ted danger marks

Q130.4

Safe water buoy

Q130.5 Q130.6

Special purpose buoys, for example; TSS lane markers Buoy– mooring

Q130.6

Q40

Quick Guide to ENC Symbols

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