
Chapter 4: Using the Chart 4-21
As an aid to passage planning, you can toggle the time calculations between
estimated time of arrival and actual hours and the speed over ground between actual
and planned.
4.11How do I monitor where I am going?
... using chart vectors
You can display a variety of graphical indicators to help monitor where you are going:
Heading (HDG) and course over ground (COG) vectors
The ship’s heading (HDG) is displayed as a line with an open arrow head. It does not
take account of winds or tides.
The course over ground (COG) indicates the boat’s actual course and is displayed as a
line with two open arrow heads.
D6877-1
SET SOG
1.3kts
TIME
ETA HOURS
SOG
ACTUAL PLANNED
600nm North-Up Relative Motion System
DATA
D6548-1
CHART VECTORS
D6772-1
Heading vector
(HDG)
Course over ground
(COG)
81244_1.book Page 21 Wednesday, December 1, 2004 11:41 AM
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