► INPUT DATA
BEARING TYPE
All bearings referenced to True North. Own heading is always True.
FIRST OBSERVATION
TIME (HH:MM)
RANGE (nm)
BEARING (T)
SECOND OBSERVATION
TIME (HH:MM)
RANGE (nm)
BEARING (T)
OWN SHIP (CONSTANT)
HEADING (T)
SPEED (kts)
► SOLUTION
Relative Motion
Speed of Rel. Motion (SRM)
—
Dir. of Rel. Motion (DRM)
—
Closest Point of Approach (CPA)
CPA Range
—
Time to CPA (from T2)
—
Time of CPA (clock)
—
Bearing at CPA
—
Target Vessel (True)
True Course (always °T)
—
True Speed
—
► MANEUVERING BOARD PLOT
Own ship
T1 – first obs.
T2 – second obs.
CPA
Rel. motion line
CPA perpendicular
Own ship hdg
Target true course