PERMITTED PERIODS OF DARK SMOKE FROM VESSELS [ S.L.200.02 1
SUBSIDIARY LEGISLATION 200.02
PERMITTED PERIODS OF DARK SMOKE 
FROM VESSELS REGULATIONS
15th April, 1969
LEGAL NOTICE 30 of 1969, as amended by Legal Notice 32 of 1969.
Title .
Smoke from Vessels Regulations.
Interpretation.
Cap. 200.
2. Words and phrases used in these regulations shall have the
same meaning as is assigned to them in the Clean Air Act,
hereinafter referred to as "the Act".
Permitted period of 
emission of dark 
smoke.
3. (1) Emissions of dark smoke from a chimney of a vessel
for not longer than the period specified in the second column of the
Schedule in respect of the class of case specified in the first column
of the said Schedule shall be left out of account for the purposes of
article 3 of the Act:
Provided that -
( a ) continuous emissions of dark smoke caused otherwise
than by the soot blowing of a water tube boiler shall
not exceed four minutes, and
( b ) in no case shall black smoke be emitted for more than
two minutes in the aggregate in any period of thirty
minutes:
Provided further that without the permission of the
authorised officer, no soot shall be blown whilst a vessel is within
any harbour or bay in Malta, which permission shall not be granted
if -
( a ) it would have been practicable to carry out that
operation before approaching land;
( b ) it would be practicable to delay that operation until
after leaving land; or
( c ) an alternative method of removing soot could be
employed.
(2) In this regulation "black smoke" means smoke which, if
compared in the appropriate manner with a chart of the type known
at the date of enactment of the Act as the Ringelmann Chart, would
appear to be as dark as or darker than shade 4 on the chart.
(3) For the purposes of the said schedule a vessel is not under
way when it is at anchor or made fast to the shore or bottom, and a
vessel which is aground shall be deemed to be under way.
2 [ S.L.200.02 PERMITTED PERIODS OF DARK SMOKE FROM VESSELS
Substituted by;
L.N. 32 of 1969.
SCHEDULE
(Regulation 3)
First Column
Class of case
Second Column
Permitted Period
1.  When new fires are being lit
preparatory to raising steam
10 minutes in the
aggregate in any
period of 1 hour
2.  When a breakdown has affected
the combustion equipment
10 minutes in the
aggregate in any
period of 1 hour
3. When it is necessary, because of
navigational difficulties, to force the
combustion equipment to the detriment of
its operation
10 minutes in the
aggregate in any
period of 1 hour
4. Emissions from a natural draught
oil-fired furnace or a coal-fired boiler
furnace in the following cases:
( a ) a tug not under way but
preparatory to getting under way
or supplying power to other
vessels or to shore installations } 10 minutes in the
aggregate in any
period of 1 hour
( b ) a vessel not under way but using
main power for the purpose of
dredging, lifting, pumping or
performing some other special
operation for which the vessel is
designed
5. Emissions from any other source 5 minutes in the
aggregate in any
period of 1 hour
