3. ECDIS Screen
3-3
North Up TM
HDG 070.0°
SPD
(CALC)
1.8
Kt
SB
(POSN)
1.7
Kt
COG
(POSN)
045.1°
SOG
(POSN)
2.0
Kt
ECDIS only
Posn true
S57 vector chart
ARCS raster format
ARCS charts are digital reproductions of British Admiralty (BA) paper charts. They retain the same standards of
accuracy, reliability and clarity as paper charts.
Zooming into the ARCS chart can be useful for magnifying a complex detail, however this decreases the density of
the data displayed, and can give a false impression of distance from danger. Therefore, it is possible to zoom 2x the
original paper chart's scale or ½ the original paper chart's scale.
North Up TM
HDG 070.0°
SPD
(CALC)
1.8
Kt
SB
(POSN)
1.7
Kt
COG
(POSN)
045.1°
SOG
(POSN)
2.0
Kt
ECDIS only
Posn true
ARCS raster format chart
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