Question 1489 Deck Safety

The correct answer is D) At the Master's discretion. The impulse-projected line throwing appliance, which is used to launch a line to another vessel or shore in an emergency, is required to be tested at the Master's discretion rather than on a fixed schedule. This is because the frequency of testing depends on factors such as the appliance's usage, environmental conditions, and the judgment of the experienced Captain. As long as the appliance is maintained and inspected regularly, the Master is responsible for determining the appropriate testing schedule to ensure its proper functioning. The other options (monthly, annually, or semiannually) do not account for the variable nature of the appliance's usage and the need for the Master's discretion in determining the testing frequency.