Question

When passing through a lock, which light means "approach the lock under full control?"

a) Red light
b) Blue light
c) Green light
d) White light

Answer 1

The green light indicates that a vessel can approach the lock under full control, signaling a universal 'go' or 'proceed with caution' in maritime navigation.

Step-by-step explanation:

When passing through a lock, the light that means "approach the lock under full control" is the green light. This color is universally recognized as a signal for "go" or "proceed with caution." In the context of maritime navigation and lock systems, a green light indicates that a vessel can start moving towards the lock. The pilot of the vessel is expected to maintain full control over the speed and direction to ensure safe passage.