(a) mark, keep open, and keep clear of obstruction
caused by the carrying out of the construction
works, such shipping channels as may be notified
by the Director of Marine;
(b)
keep open and clear of obstruction caused by the
carrying out of the construction works such
approaches to Kai Tak Airport as may be notified
by the Director of Civil Aviation.
(2)
If the Director after consultation with
(a)
the Director of Marine, is of the opinion that
any part of the construction works or plant
associated therewith is obstructing any shipping
channel notified under subsection (1)(a); or
(b) the Director of Civil Aviation, is of the opinion
that any part of the construction works or plant
associated therewith is obstructing any
approaches notified under subsection (1)(b),