An industry guide recomending operational procedures for the safe ship to ship (STS) transfer of crude oil and product was first published in 1975. A similar guide recommending procedures for the STS transfer of liquefied petroleum gases (LPG) was published in 1980. Both publications have been revised to reflect current best practices and equipment developments.
This guide builds on the previous recommendations and also recognises the experience gained within the industry of STS transfer operations, including the transfer of cemical (MARPOL Annex II) and liquefied natural gas (LNG) cargoes.