Amendments incorporated into previous editions of S-52 or its Annex A, the Presentation Library:

• Maintenance Document No. 1 - January 1999

• Maintenance Document No. 2 - January 1999

• Maintenance Document No. 3 - March 2000

• Maintenance Document No. 4 - March 2004

• Maintenance Document No. 5 - January 2008

• Maintenance Document No. 6 - January 2008

• Maintenance Document No. 7 - October 2009

• Maintenance Document No. 8 - October 2011