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✅ (MSS) Mandatory Action Signs

Mandatory signs are safety signs used to instruct a specific course of action that must be followed. These safety mandatory signs are typically circular with a blue background and are used in workplaces, construction sites, and industrial environments.

The purpose of mandatory signs is to clearly communicate required actions, such as the use of PPE, ensuring compliance with health and safety regulations through standardized symbols.

To signify that the lifeboat gripes must be released in launch sequence.

To signify that the self-contained air support system must be energized in launch sequence.

To signify that the water spray system for a lifeboat must be energized in launch sequence.

It is used to signify that the lifeboat or rescue boat falls must be released in launch sequence.

To signify that the rescue boat must be lowered in launch sequence.

To signify that the liferaft must be lowered in launch sequence.

To signify that the lifeboat must be lowered in launch sequence.


It is used to signify that the engine of a lifeboat or rescue boat must be started in launch sequence.

It is used to signify that hatches on a lifeboat, fully enclosed rescue boat or rigid liferaft must be closed and secured in launch sequence.

It is used to signify that the seat belts must be worn.

To signify that the rescue boat must be lowered in launch sequence.

Company safety instructions must be consulted before launching for drill.


To signify that the liferaft must be lowered in launch sequence. Company safety instructions must be consulted before launching for drill.


To signify that the lifeboat must be lowered in launch sequence. Company safety instructions must be consulted before launching for drill.

It is used to signify that it is required that all personnel wear protective clothing.


This sign is used to signify that ear protection must be worn.






To signify that ear protection must be worn.