For marine systems, containers must be secured with a minimum of two brackets to prevent movement from vessel motion and vibration.

• A. Two brackets
• B. One bracket
• C. Three brackets
• D. Four brackets

Answer: (A)

In marine service, equipment faces constant motion and vibration, so containers must be restrained at more than one point to keep them from shifting or tilting. Using a minimum of two brackets provides two independent restraint points, which helps prevent translation and rotation of the container under dynamic loads. This redundancy distributes the securing forces and reduces the risk that a single point of restraint could fail, potentially causing a rupture, misalignment, or release of contents. While additional brackets can offer extra security in some installations, the requirement is to provide at least two to ensure adequate stability against vessel motion.