At the recent Security Matters Seminar, held in London, sponsored by TT Club and organized by the publishers of Cargo Systems magazine, there was lively discussion focusing on the imminent U.S. Customs 24 Hour Manifest Rule and the IMO's amendments to Chapter XI of its Safety of Life at Sea (SOLAS) convention, which are due to be ratified next month. demands. In addition, Webster drew attention to opportunity for database cross-referencing that the 24 Hour Manifest Rule gives the U.S. authorities. its own security procedures," he said. on the manifests they receive from foreign ports. by using this time to also cross-check company and individual identities with IRS, intelligence reports and other data at their disposal, the U.S.