The cargoes accepted for carriage according to this notification
of equivalence are oil products (regulated under Annex I to MARPOL 73/78) which have a vapour pressure in excess
of 5 x 103 Pa at 20°C and which do not contain heavy
components likely to remain in the cargo tanks after a ventilation
procedure. Substances identified by Annex
II to MARPOL 73/78 as noxious liquid substances are not covered
by these equivalency considerations, as vessels carrying such substances
will be certified under the requirements of Annex II.
Typical products, in addition to light naphtha, which may
be suitable for venting are, e.g.:
- Jetfuel JP4 also called Turbofuel B or White Cut Kerosene,
- MOGAS (motor oil gasoline, ordinary gasoline),
- Natural gasoline,
- Condensate.
- Pentane + (oil product), and
- Casinghead gasoline.