<s>
The	O
Water	B-Device
Integrator	I-Device
(	O
Gidravlicheskiy	O
integrator	O
)	O
was	O
an	O
early	O
analog	O
computer	O
built	O
in	O
the	O
Soviet	O
Union	O
in	O
1936	O
by	O
Vladimir	O
Sergeevich	O
Lukyanov	O
.	O
</s>
<s>
A	O
water	B-Device
integrator	I-Device
was	O
used	O
in	O
the	O
design	O
of	O
the	O
Karakum	O
Canal	O
in	O
the	O
1940s	O
,	O
and	O
the	O
construction	O
of	O
the	O
Baikal	O
–	O
Amur	O
Mainline	O
in	O
the	O
1970s	O
.	O
</s>
