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The act
prohibits the emission os dark smoke from all vessels in U.K. waters, that are
navigable by sea going ships.
section 1
States:-
(1) If dark smoke is emitted on any day, the
owner, master or any person
in charge of the vessel shall be
guilty of an offence.
(2) Emissions must not last longer than the
periods specified below.
(a) Emission
of dark smoke from an oil fired boiler, with forced draught
fans, for not more than
ten minutes aggregate in any two hour
period, with not more
than four minutes continuous emission.
(b) Emission
of dark smoke from a compression ignition engine, for not
more than ten minutes in
any two hour period, with not more than
four minutes continuous
emission.
(c) Emission
of dark smoke from any other source, not more than five
minutes aggregate in any
one hour period.
(d) In
no case shall black smoke be emitted for more than three minutes
aggregate in any half
hour period.
NOTE!
Black smoke is defined as "As dark or darker than shade four on the
Ringlemann Chart.
Dark smoke is defined as shade two
on the Ringlemann chart.
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