<s>
Sentinel-3B	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
25	O
April	O
2018	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
second	O
(	O
after	O
Sentinel-3A	B-Algorithm
,	O
launched	O
16	O
February	O
2016	O
)	O
of	O
four	O
planned	O
Sentinel-3	B-Algorithm
satellites	O
.	O
</s>
<s>
Sentinel-3B	B-Algorithm
was	O
successfully	O
launched	O
on	O
25	O
April	O
2018	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>
