1.2.1 These Revised Guidelines and Specifications
apply to installations being made in oil tankers, the keels of which
are laid or which are at a similar stage of construction on or after
2 October 1986. The Guidelines and Specifications adopted under resolutions
A.393(X), A.496(XII) and MEPC.13(19) are not applicable to oil tankers
to which these new Guidelines and Specifications apply.
1.2.2 Installations made in “existing”
tankers as defined in regulation 1(7) before
2 October 1986, and installations made in “new” tankers
as defined in regulation 1(6) of Annex
I of MARPOL 73/78, and the keels of which are laid or which
are at a similar stage of construction before 2 October 1986, should
comply either with the requirements contained in the Guidelines and
Specifications adopted under resolutions A.393(X), A.496(XII) and
MEPC.13(19) or with the requirements contained in these Guidelines
and Specifications.