Furuno CI-35H - Manual (Page 31)

3-7
FUNDAMENTAL DATA SECTION
Ground Tracking Mode Water Tracking Mode
Ship’s movement
based on ground
Direction
N
Layer 1
Measuring
depth
Tide movement
of layer 1
Speed
Layer 2
Layer 3
Seabed
Tide movement
of layer 2
Tide movement
of layer 3
Layer 1
Tide movement of
layer 1 relative to
surface water.
Layer 2
Layer 3
Tide movement of
layer 2 relative to
surface water.
Tide movement of
layer 3 relative to
surface water.
Ship’s movement
relative to surface
water.
Surface Layer
(Reference layer)
Nav-aided Mode
Layer 1
Tide movement
of layer 1
Layer 2
Layer 3
Tide movement
of layer 2
Tide movement
of layer 3
GPS Satellies
Ship's movement
measured by
using satellies
(Base on ground)