Shares
in
the
Oslo-listed
engineering
giant
plunged
more
than
11%
earlier
this
week
after
it
revealed
that
engineering
design
work
on
the
unit
is
taking
longer
than
expected
due
to
technology
issues
on
developing
the
subsea
and
riser
concepts
for
the
unit.
Aker
won
an
eight-year
contract
worth
$1.9
billion
last
year
to
provide
the
bespoke
Cat-B
semi-submersible
well
intervention
rig
for
the
Norwegian
state
oil
company,
including
options
for
an
additional
six
years,
with
operational
start-up
scheduled
for
the
second
half
of
2015.
However,
the
latest
design
hiccup
has
triggered
fears
among
analysts
that
the
contractor
will
not
be
able
to
deliver…