- The
British tested their ASDIC on HMS Antrim in 1920 and
started production in 1922. The 6th
Destroyer Flotilla had
ASDIC-equipped
vessels in 1923. An...
-
Asdic was the
British version of
sonar developed at the end of
World War I
based on the work of
French physicist Paul
Langevin and
Russian engineer M...
- Walker. The
problem addressed by
Walker in the
tactics then in use was that
ASDIC, the
active sonar means to
search for and find a
submerged submarine, searched...
- (98 ft). The
device lasted 20 to 25 minutes. It
replicated the echo of an
Asdic-sonar
submarine contact. The
Royal Navy
called it SBT (Submarine Bubble...
- with
ASDIC were
usually conducted in
ideal conditions and the
British Admiralty failed to
appreciate the
limitations of
ASDIC:
range was limited,
ASDIC worked...
-
yards (3.5 km); and upon
closing lost the
radar contact,
gained a
doubtful ASDIC contact, and
dropped two
depth charges. At 2245
Duncan detected a radar...
-
reflection of
ASDIC. The
coating reduced echoes by 15% in the 10 to 18 kHz range. This
frequency range matched the
operating range of the
early ASDIC active...
-
weapon in the war. The
Fairlie Mortar was
developed by the
Royal Navy's
ASDIC-research
establishment at Fairlie,
North Ayrshire. The
research establishment...
- know they were
being hunted. In practice,
ASDIC had an
average detection range of 1,300
yards (1,200 m).
ASDIC could be
ineffective if
there was too much...
- and anti-aircraft
weaponry reinforced,
while new technologies, such as
ASDIC, Huff-Duff and hydrophones, were developed. At the
start of
World War II...
