1. OILPOL 54 was amended in 1962, 1969 and 1971.
2. By the London Convention for the Prevention of Pollution from Ships (MARPOL), 1973.
3. By the 1978 protocols to the MARPOL 73 convention and the Convention on Safety of Life at Sea (SOLAS) 1974, London, February 1978.
4. Convention on Tanker Safety and Pollution (TSPP) 1978, Protocol to 1974 SOLAS Convention, Chapter II, Part C, Rule 29, ii.
5. President Carter's proposal, 17 March 1977.