part of the ample naval industry
installations established around the northern coast of niterói,
the 'ilha do viana' was thoroughly modified during the passing
of the years to allow the development of its own docks and
shipyards.
it is located just north of the conceição island, and
between the islands of santa cruz, to the east, and mocangué, to
the west.
to the north there are only the open waters of the
guanabara bay and the governor's island beyond them.