SSAS
SSAS (Ship Security Alert System) is a mandatory security system under SOLAS Chapter XI-2, Regulation 6, introduced by the IMO to enhance maritime security.It allows a vessel to silently transmit a security alert to the Company Security Officer (CSO) and/or Flag State authority when the ship is under threat, without alerting onboard personnel or intruders.
Is SSAS mandatory under SOLAS?
Yes. SSAS is mandatory under SOLAS Chapter XI-2, Regulation 6, in accordance with the ISPS Code.
Which vessels are required to carry SSAS?
Passenger ships (including high-speed craft)
Cargo ships of 500 GT and above on international voyages
Mobile Offshore Drilling Units (MODUs)
What is the main purpose of SSAS?
SSAS provides a covert distress alert to notify shore authorities of security threats such as piracy, hijacking, or armed robbery.
Who receives an SSAS alert?
Alerts are sent to:
The Company Security Officer (CSO)
The Flag State or designated authority
(As defined in the ship’s Ship Security Plan – SSP)
Does SSAS transmit the ship’s position?
Yes. SSAS transmits the ship’s identity and current position, enabling rapid response by authorities.
How is SSAS activated?
SSAS is activated manually using hidden activation points onboard, as specified in the approved SSP.
Does SSAS provide any audible or visual alarm onboard?
No. SSAS is a silent system and must not raise any alarm onboard when activated.
Can SSAS be switched off or reset by the crew?
SSAS cannot be cancelled onboard once activated. Resetting can only be done following procedures approved by the Company or Flag State
Is SSAS testing required?
Yes. Periodic testing is required in coordination with the CSO and Flag State, ensuring alerts are properly received without causing false alarms.
Is SSAS different from GMDSS distress alerts?
Yes.
SSAS is for security threats (covert alert)
GMDSS is for safety emergencies (distress, urgency, safety)
Conclusion
SSAS is a critical SOLAS-mandated security system that plays a key role in protecting vessels, crew, and cargo from security threats such as piracy and unlawful acts. By enabling a silent and immediate alert to shore authorities, SSAS ensures timely response while maintaining onboard discretion.
Keeping the SSAS fully operational, tested, and compliant with IMO and ISPS requirements is essential for maritime security, regulatory compliance, and successful flag and port State inspections.