<s>
Seaspray	B-Algorithm
is	O
series	O
of	O
a	O
British	O
airborne	O
maritime	O
radar	O
systems	O
,	O
initially	O
developed	O
by	O
Ferranti	O
for	O
the	O
Lynx	O
helicopter	B-Application
,	O
built	O
in	O
Edinburgh	O
.	O
</s>
<s>
It	O
is	O
used	O
primarily	O
as	O
an	O
Air-to-Surface	B-Device
Vessel	I-Device
radar	I-Device
in	O
the	O
anti-submarine	O
and	O
anti	O
missile	B-Application
boat	I-Application
roles	O
.	O
</s>
<s>
The	O
combination	O
of	O
Lynx	O
and	O
Seaspray	B-Algorithm
has	O
been	O
an	O
export	O
success	O
and	O
operates	O
in	O
numerous	O
armed	O
forces	O
around	O
the	O
world	O
,	O
often	O
along	O
with	O
the	O
related	O
Sea	O
Skua	O
short-range	O
missile	O
.	O
</s>
<s>
A	O
new	O
series	O
,	O
Seaspray	B-Algorithm
7000	O
,	O
was	O
launched	O
in	O
2002	O
.	O
</s>
<s>
In	O
1967	O
,	O
Egyptian	O
missile	B-Application
boats	I-Application
sank	O
the	O
Israeli	O
destroyer	O
Eilat	O
,	O
immediately	O
revealing	O
the	O
serious	O
threat	O
these	O
new	O
weapons	O
presented	O
.	O
</s>
<s>
The	O
solution	O
was	O
to	O
move	O
the	O
weapon	O
off	O
of	O
the	O
ships	O
and	O
mount	O
them	O
on	O
helicopters	B-Application
instead	O
.	O
</s>
<s>
This	O
would	O
mean	O
the	O
missile	O
itself	O
needed	O
only	O
enough	O
range	O
to	O
keep	O
the	O
helicopter	B-Application
out	O
of	O
range	O
of	O
the	O
guns	O
on	O
the	O
boats	O
,	O
which	O
were	O
typically	O
short-range	O
systems	O
with	O
perhaps	O
effective	O
range	O
.	O
</s>
<s>
Longer	O
range	O
would	O
be	O
useful	O
as	O
it	O
would	O
hide	O
the	O
approach	O
of	O
the	O
helicopter	B-Application
.	O
</s>
<s>
Because	O
the	O
missile	B-Application
boats	I-Application
are	O
small	O
,	O
they	O
can	O
hide	O
under	O
the	O
radar	B-Algorithm
horizon	I-Algorithm
of	O
the	O
ships	O
while	O
closing	O
the	O
range	O
.	O
</s>
<s>
Detecting	O
these	O
targets	O
before	O
they	O
moved	O
into	O
the	O
range	O
of	O
their	O
anti-ship	O
missiles	O
would	O
require	O
the	O
helicopters	B-Application
to	O
carry	O
an	O
Air-to-Surface	B-Device
Vessel	I-Device
radar	I-Device
and	O
patrol	O
the	O
area	O
around	O
their	O
ships	O
out	O
to	O
the	O
approximate	O
range	O
of	O
its	O
primary	O
target	O
,	O
the	O
P-15	O
Termit	O
missile	O
,	O
or	O
Styx	O
as	O
it	O
was	O
known	O
in	O
the	O
west	O
.	O
</s>
<s>
Trials	O
of	O
the	O
Seaspray	B-Algorithm
radar	O
system	O
began	O
in	O
1974	O
.	O
</s>
<s>
Seaspray	B-Algorithm
is	O
a	O
monopulse	B-Algorithm
radar	I-Algorithm
that	O
produces	O
90kW	O
in	O
the	O
I	B-Algorithm
band	I-Algorithm
(	O
formerly	O
known	O
as	O
the	O
X-band	O
)	O
.	O
</s>
<s>
In	O
the	O
late	O
1980s	O
,	O
improved	O
versions	O
adding	O
doppler	B-Algorithm
radar	I-Algorithm
techniques	O
were	O
developed	O
.	O
</s>
<s>
These	O
were	O
introduced	O
in	O
the	O
early	O
1990s	O
as	O
the	O
Seaspray	B-Algorithm
2000	O
and	O
3000	O
,	O
and	O
found	O
use	O
on	O
a	O
variety	O
of	O
aircraft	O
,	O
including	O
the	O
Lynx	O
,	O
Lockheed	O
C-130	O
Hercules	O
,	O
Westland	O
Sea	O
King	O
,	O
Bell	O
212	O
and	O
Fokker	O
F27	O
.	O
</s>
<s>
A	O
completely	O
redesigned	O
Seaspray	B-Algorithm
7000E	O
version	O
was	O
launched	O
in	O
July	O
2002	O
by	O
BAE	O
System	O
Avionics	O
.	O
</s>
<s>
This	O
replaced	O
the	O
mechanically	O
scanned	O
feed	O
horn	O
with	O
an	O
active	B-Architecture
electronically	I-Architecture
scanned	I-Architecture
array	I-Architecture
that	O
provided	O
the	O
elevation	O
scanning	O
and	O
fine	O
pointing	O
of	O
the	O
azimuth	O
using	O
beam	O
steering	O
.	O
</s>
<s>
Seaspray	B-Algorithm
5000E	O
equips	O
the	O
Sikorsky	O
S-92	O
,	O
Embraer	O
EMB-111	O
patrol	O
conversions	O
,	O
and	O
Canadair	O
CL-604	O
Challenger	O
.	O
</s>
<s>
The	O
even	O
larger	O
Seaspray	B-Algorithm
7500E	O
is	O
used	O
on	O
US	O
Coast	O
Guard	O
C-130	O
'	O
s	O
.	O
</s>
<s>
The	O
division	O
of	O
Ferranti	O
that	O
developed	O
Seaspray	B-Algorithm
became	O
GEC-Marconi	O
,	O
then	O
BAE	O
Systems	O
,	O
then	O
Selex	O
ES	O
,	O
and	O
is	O
today	O
part	O
of	O
Leonardo	O
.	O
</s>
<s>
709	O
Naval	O
Air	O
Squadron	O
were	O
the	O
first	O
to	O
have	O
Seaspray-equipped	O
Lynx	O
helicopters	B-Application
in	O
1978	O
.	O
</s>
<s>
24	O
Royal	O
Navy	O
Lynx	O
HAS.2s	O
were	O
sent	O
to	O
the	O
Falklands	O
War	O
,	O
and	O
16	O
of	O
these	O
were	O
equipped	O
with	O
Seaspray	B-Algorithm
.	O
</s>
<s>
In	O
1992	O
,	O
the	O
Seaspray	B-Algorithm
2000	O
was	O
sold	O
to	O
the	O
Scottish	O
Fisheries	O
Protection	O
Agency	O
for	O
£0.5	O
m	O
.	O
</s>
<s>
In	O
January	O
1999	O
,	O
the	O
German	O
Navy	O
(	O
Deutsche	O
Marine	O
)	O
bought	O
the	O
system	O
for	O
£15m	O
for	O
its	O
Lynx	O
helicopters	B-Application
.	O
</s>
<s>
In	O
August	O
2005	O
,	O
the	O
United	O
States	O
Coast	O
Guard	O
bought	O
the	O
Seaspray	B-Algorithm
7500E	O
radar	O
system	O
for	O
£69m	O
for	O
its	O
22	O
HC-130	O
Hercules	O
aircraft	O
.	O
</s>
