<s>
Sentinel-3A	B-Algorithm
is	O
a	O
European	O
Space	O
Agency	O
Earth	O
observation	O
satellite	O
dedicated	O
to	O
oceanography	O
which	O
launched	O
on	O
16	O
February	O
2016	O
.	O
</s>
<s>
It	O
was	O
built	O
as	O
a	O
part	O
of	O
the	O
Copernicus	B-General_Concept
Programme	I-General_Concept
,	O
and	O
is	O
the	O
first	O
of	O
four	O
planned	O
Sentinel-3	B-Algorithm
satellites	O
.	O
</s>
<s>
Its	O
sister	O
satellite	O
,	O
Sentinel-3B	B-Algorithm
,	O
launched	O
on	O
25	O
April	O
2018	O
.	O
</s>
<s>
Two	O
recurrent	O
satellites	O
-	O
Sentinel-3C	O
and	O
Sentinel-3D	O
-	O
will	O
follow	O
in	O
approximately	O
2024	O
and	O
2028	O
respectively	O
to	O
ensure	O
continuity	O
of	O
the	O
Sentinel-3	B-Algorithm
mission	O
.	O
</s>
<s>
In	O
October	O
2015	O
,	O
the	O
Sentinel-3A	B-Algorithm
launch	O
was	O
planned	O
for	O
December	O
2015	O
,	O
but	O
delays	O
in	O
transportation	O
from	O
Cannes	O
to	O
the	O
Plesetsk	O
Cosmodrome	O
postponed	O
the	O
launch	O
to	O
January	O
2016	O
.	O
</s>
<s>
By	O
17	O
December	O
,	O
Sentinel-3A	B-Algorithm
completed	O
pre-launch	O
testing	O
and	O
was	O
placed	O
into	O
storage	O
for	O
the	O
Christmas	O
break	O
,	O
lasting	O
until	O
11	O
January	O
2016	O
.	O
</s>
<s>
Sentinel-3A	B-Algorithm
was	O
successfully	O
launched	O
on	O
16	O
February	O
2016	O
at	O
17:57UTC	O
from	O
the	O
Plesetsk	O
Cosmodrome	O
aboard	O
a	O
Rokot	O
launch	O
vehicle	O
.	O
</s>
