1.2.1 The Revised Guidelines and Specifications
apply to equipment installed in oil tankers the keels of which are
laid, or which are at a similar stage of construction, on or after
1 January 2005. The Guidelines and Specifications adopted under Resolutions
A.393(X), A.496(XII), MEPC.13(19) and A.586(14) are not applicable
to oil tankers to which these new Guidelines and Specifications apply.
1.2.2 Equipment installed in other oil tankers
the keels of which are laid, or are in a similar stage of construction,
before 1 January 2005, should comply either with the requirements
contained in the Guidelines and Specifications adopted under resolutions
A.393(X), A.496(XII), MEPC.13(19) and A.586(14), as applicable, or
with the requirements contained in these new Guidelines and Specifications.