<s>
Poseidon	B-Operating_System
Linux	I-Operating_System
is	O
a	O
Linux	B-Application
distribution	I-Application
,	O
a	O
complete	O
operating	B-General_Concept
system	I-General_Concept
,	O
originally	O
based	O
on	O
Kurumin	O
,	O
now	O
based	O
on	O
Ubuntu	B-Operating_System
.	O
</s>
<s>
The	O
name	O
Poseidon	B-Application
was	O
chosen	O
after	O
the	O
God	O
of	O
the	O
seas	O
in	O
Greek	O
mythology	O
,	O
since	O
a	O
large	O
number	O
of	O
oceanologists	O
have	O
been	O
involved	O
in	O
the	O
development	O
of	O
the	O
system	O
.	O
</s>
<s>
The	O
3.x	O
family	O
was	O
pre-presented	O
in	O
2008	O
at	O
the	O
9th	O
Free	B-Application
Software	I-Application
International	O
Forum	O
(	O
FISL9.0	O
)	O
,	O
.	O
</s>
<s>
It	O
was	O
well	O
received	O
by	O
the	O
Linux	B-Application
community	O
,	O
including	O
Jon	O
"	O
maddog	O
"	O
Hall	O
of	O
Linux	B-Application
International	O
.	O
</s>
<s>
Poseidon	B-Application
3.2	O
was	O
officially	O
released	O
in	O
May	O
2010	O
at	O
the	O
IV	O
Brazilian	O
Oceanography	O
Congress	O
,	O
in	O
Rio	O
Grande	O
,	O
Brazil	O
.	O
</s>
<s>
For	O
version	O
4.0	O
,	O
the	O
project	O
changed	O
the	O
base	O
distribution	O
from	O
Knoppix/Kurumin	O
to	O
Ubuntu	B-Operating_System
.	O
</s>
<s>
This	O
was	O
due	O
to	O
the	O
wide	O
acceptance	O
of	O
Poseidon	B-Application
outside	O
the	O
Portuguese-speaking	O
scientific	O
community	O
,	O
and	O
because	O
of	O
the	O
shut-down	O
of	O
the	O
Kurumin	O
project	O
.	O
</s>
<s>
The	O
Ubuntu-based	O
releases	O
allow	O
for	O
installation	O
in	O
Portuguese	O
,	O
Spanish	O
,	O
English	O
,	O
German	O
,	O
French	O
,	O
Greek	O
,	O
and	O
other	O
languages	O
.	O
</s>
<s>
The	O
development	O
team	O
stated	O
that	O
after	O
Poseidon	B-Application
5.0	O
,	O
the	O
distribution	O
would	O
focus	O
on	O
bathymetry	O
,	O
seafloor	O
mapping	O
,	O
and	O
GIS	B-Application
software	I-Application
.	O
</s>
<s>
The	O
current	O
version	O
of	O
Poseidon	B-Application
is	O
8.0	O
,	O
and	O
is	O
based	O
on	O
32-bit	O
and	O
64-bit	O
Ubuntu	B-Operating_System
16.04	O
LTS	O
.	O
</s>
<s>
Throughout	O
its	O
release	O
history	O
,	O
the	O
distribution	O
has	O
contained	O
many	O
free	B-Application
software	I-Application
programs	O
used	O
in	O
science	O
and	O
engineering	O
,	O
such	O
as	O
the	O
Fortran	B-Application
programming	I-Application
language	I-Application
,	O
Kile	B-Language
and	O
Lyx	B-Language
for	O
scientific	O
writing	O
,	O
numerical	O
modeling	O
,	O
2D/3D/4D	O
visualization	O
,	O
statistics	O
,	O
CAD	O
,	O
genetics	O
,	O
bio-informatics	O
,	O
and	O
several	O
tools	O
that	O
support	O
GIS	B-Application
and	O
mapping	O
.	O
</s>
<s>
Additionally	O
,	O
LibreOffice	B-Application
,	O
web	O
browsers	O
,	O
and	O
multimedia	O
packages	O
are	O
included	O
.	O
</s>
<s>
+	O
Timeline	O
Version	O
Date	O
Comment	O
2.0	O
2005-10-25	O
3.1	O
2008-11-26	O
3.2	O
2010-05-11	O
4.0	O
2011-07-27	O
Based	O
on	O
Ubuntu	B-Operating_System
10.04	O
LTS.5.02010Based	O
on	O
Ubuntu	B-Operating_System
12.04.1	O
LTS.6.07.0Based	O
on	O
Ubuntu	B-Operating_System
14.04	O
LTS.8.02016-11-23Based	O
on	O
Ubuntu	B-Operating_System
16.04.1	O
LTS.9.02017-09-29	O
Based	O
on	O
Ubuntu	B-Operating_System
16.04.3	O
LTS	O
.	O
</s>
