1.1.1 The Guidelines apply to offshore support
vessels, regardless of size or voyage, that, while not constructed
or adapted primarily to carry in bulk cargoes subject to these Guidelines,
carry, in limited quantities, the substances identified in 1.2.2.
The Guidelines apply when these cargoes are carried.
1.1.2 For an offshore support vessel the keel
of which is laid or which is at a similar stage of construction on
or after 19 April 1990, the requirements in chapters 1 to 6 apply in full. For an offshore support vessel
the keel of which is laid or which is at a similar stage of construction
prior to 19 April 1990, the Guidelines apply as indicated in chapter 7.
1.1.3 A vessel irrespective of the date of construction,
which is converted for the carriage of bulk liquids subject to these
Guidelines on or after the date specified in 1.1.2 should be treated
as a vessel constructed on the date on which such conversion commences.
An existing offshore support vessel which transports a cargo subject
to these Guidelines and undergoes modification for the transport of
additional cargoes falling under these Guidelines should not be considered
as a vessel which has undergone a conversion.
1.1.4 For the purpose of these Guidelines, "limited
quantities" means that the aggregate quantity of bulk liquids identified
in 1.2.2 that is carried is
any amount not exceeding a maximum which is the lesser of 800 m3 or
a volume in cubic metres equal to 40% of the vessel's deadweight calculated
at a cargo density of 1.0. For ships referred to in 1.3.4.2, such as well-stimulation
vessels, the Administration may permit carriage of more than the maximum
amount specified above.
1.1.5 For other ships, the Administration may
permit carriage of more than the relevant maximum amount specified
above, provided that the survival capability requirements of chapter 2 of the International Bulk Chemical
Code or the International Gas Carrier Code are complied with.
1.1.6 The Guidelines apply only in the case of
bulk carriage involving transfer of the cargo to or from its containment
which forms part of the vessel or remains on board.
1.1.7 For provisions regulating the transport
of dangerous goods and marine pollutants in packaged form, including
transport of dangerous goods in portable tanks, refer to the International
Maritime Dangerous Goods (IMDG) Code.
1.1.8 These Guidelines apply in addition to the
Guidelines for the Design and Construction of Offshore Supply Vessels.
Where the present Guidelines set forth alternative safety standards,
the standards in the present Guidelines should be followed.