International Ship and Port Facility Security Code

ISPS Code being applied in Southampton, England, with signs prohibiting access to areas next to ships.
ISPS Code sign in Youghal, Ireland
The cruise ship Sea Princess leaving the port of Southampton; fences are visible on the right, which prevent access to the ship under the ISPS Code.
ISPS Sign in Port

The International Ship and Port Facility Security (ISPS) Code is an amendment to the Safety of Life at Sea (SOLAS) Convention (1974/1988) on Maritime security including minimum security arrangements for ships, ports and government agencies. Having come into force in 2004, it prescribes responsibilities to governments, shipping companies, shipboard personnel, and port/facility personnel to "detect security threats and take preventive measures against security incidents affecting ships or port facilities used in international trade."