Specifications

FISH
ARCHES
Fish arches
are created
when the cone
of sound
passes
over a fish.
The distance
to a fish
when the cone
first strikes it is shown
as "A"
below.
When the center of
the cone strikes
the
fish,
the
distance is
shorter as shown
"B".
As the cone
leaves the
fish,
the
distance
increases
again
as shown
in "C".
When
the Fish
I.D. mode
is
off,
the
depth
of the
water will affect the
size
and
shape
of the fish arch
due to the cone
angle
diameter.
For
example,
if the cone
passes
over a
fish in shallow
water,
the
signal
displayed
on the UltraNlav
may
not arch
at all. This is due
to the narrow
cone diameter and the
resolution limitations
of the
display.
74 31
BOATS
DIRECTION
OF TRAVEL
CENTRAL PACIFIC LORAN-C CHAIN CR14900
REGIONAL MANAGER
COMMANOER. PACIFIC AREA. ALAMEDA,
CA
CHAIN MANAGER
14TH COAST GUARD DISTRICt HONOLULU,
HI
COORDINATOR OF CHAIN
OPERATIONS LOCATION: OMSTA KANEOHE,
HI
CONTROL SITE: OMSTA KANEOHE,
HI
DESIG.
STATIOl
MSTER
JOwsr'4
IGLANOHI
IXMV
UPCLIJ OW
H'
VAM(EE KURE ISLAND
HI
1
.1
adln-
A
B
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