What would happen to ships if they do not comply with the ISPS Code requirements and if they do not have the Certificate?

The ships which do not comply with the ISPS code  requirements,  should not be issued with International Ship Security Certificates (or after the 1 July 2004, if they qualify, with an Interim International Ship Security Certificate).

In the strict legal sense and bearing in mind that we are talking about security, all Contracting Governments should direct those ships flying their flag and which are required to comply with the requirements of chapter XI-2 and the ISPS Code and which have not been issued with the required certificate by the 1 July 2004 to immediately discontinue operations until they have been issued with the required certificate.A ship, which is required to comply with the requirements of chapter XI-2 and the ISPS Code, is subject to control and compliance measures when in a port of another Contracting Government by officers duly authorised by that Government. 

IMO has issued MSC/Circ.1111 Guidance relating to the implementation of SOLAS chapter XI-2 and the ISPS Code 
This circular includes:

About the author

Amit Sharma

Graduated from M.E.R.I. Mumbai (Mumbai University), After a brief sailing founded this website with the idea to bring the maritime education online which must be free and available for all at all times and to find basic solutions that are of extreme importance to a seafarer by our innovative ideas.