Home2020 Treaties and Agreements ...Guyana (20-918) – Agreement Concerning Cooperation to Suppress Illicit Traffic by Sea and Air hide Guyana (20-918) – Agreement Concerning Cooperation to Suppress Illicit Traffic by Sea and Air TIAS Office of Treaty Affairs September 18, 2020 Maritime Matters: Law Enforcement and Shiprider Signed at Georgetown April 10, 2001; entered into force September 18, 2020. Download Agreement [652 KB] Tags Guyana Law Enforcement Maritime Matters