SOLAS Convention framework, amendments, and certification obligations
What the exam tests
This domain covers the SOLAS 1974 framework, the tacit-acceptance amendment route, and the certificates a ship must hold. Questions often ask which certificate, survey window, or amendment date applies.
Core framework
SOLAS 1974 entered into force on 25 May 1980; the 1978 and 1988 Protocols are part of the current regime. Amendments are normally adopted by the Maritime Safety Committee and enter into force on a date set under tacit acceptance. Unless rejected by the required contracting-government tonnage/number threshold before that date, they bind all parties. Chapter I sets survey and certification duties. Cargo ship Safety Construction, Safety Equipment, and Safety Radio Certificates are normally valid for five years; the Passenger Ship Safety Certificate for 12 months. Annual surveys keep cargo certificates valid, and the three-month anniversary window matters.
Worked example
A cargo ship's five-year Safety Equipment Certificate expires on 30 June 2026. Its annual survey is due by the anniversary date, with a window of three months before and after 30 June 2025. If the annual survey is completed on 20 September 2025, the certificate remains valid; if it slips to October, validity is at risk and the flag Administration must be involved before the ship trades. The five-year expiry does not excuse the annual survey.
Traps
Do not confuse a certificate's five-year term with a five-year survey holiday. Do not assume a Port State Control inspector accepts an expired certificate because a renewal survey is booked. Do not treat an exemption as a permanent equivalent; it must be documented by the Administration.