The Singapore Maritime and Port Authority (MPA) said that ships in compliance with the ISPS Code prior to July 1, 2004 will receive a 5% rebate on port dues when they call at Singapore between May 1 and June 30. The rebate may be claimed by producing a valid International Ship Security
Certificate (ISSC) or a statement of compliance issued by the flag State. Port Marine Notice No. 49 of 2004 (30 April 2004).