What is the condition that triggers the high level alarm on a vessel?

The high level alarm on a vessel is typically triggered when the cargo has reached 95% of tank capacity. This condition serves as a critical safety measure to prevent the tank from overflowing and potentially leading to dangerous situations, such as spills or structural damage to the tank.

This threshold is set to provide ample warning for crew members to take appropriate actions, such as adjusting pump rates or preparing for the end of the cargo loading operation. Operating with this safety margin helps ensure that there is enough time to respond effectively before reaching the maximum capacity, which is crucial in managing the safe handling of hazardous substances.

While thresholds such as 80%, 90%, or even 100% may be relevant in different contexts, the specific standard for the high level alarm is generally set at 95% for operational safety, making this the optimal choice.