Near Matches
Ignore Exact
Everything
2
Echo Sounder
(
thing
)
by
Kawika
Thu Aug 09 2001 at 10:36:34
An instrument for determining water depth by measuring, near the sea surface, the travel time of an
acoustic pulse
reflected
from the sea bed.
Also known as a
fathometer
.
Ninetales
EDB
Sounder
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