For the purposes of this Act,
"transfer operation" --
(a) means an operation that is involved in the preparation for, or in the commencement of, carrying on or termination of, a transfer of oil or a noxious liquid substance or a combination of those substances, whether in bulk, packaged or another form, to or from a ship or a place on land, but
(b) does not include a transfer of oil cargo at sea between oil tankers with a gross tonnage of 150 or more, to which Chapter 8 of Annex I of MARPOL applies.