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Tactical diameter
The
tactical
diameter
of a
ship
is the distance:
travelled on
sea surface
during a
turning circle
test
with
maximum
rudder
angle
by the
center of gravity
of a ship
taken
perpendicular
to the
initial
track followed at approach
speed
when the
heading
has changed by
180°
The ratio
of the tactical diameter
divided by
the ship's
length between perpendiculars
gives a
dimensionless parameter
which can be used to
compare
ships
maneuverability.
