tidewaiter
/ˈtɪdweɪtər/Definitions
1. noun
A person who waits for or attends to ships arriving or departing at a tide
“The tide waiters assisted the sailors in navigating their vessels safely through the port.”
2. noun
A person who waits for or attends to something that is dependent on the tides, such as a dock or a wharf
“The tide waiters ensured that the dock was prepared for the incoming tide.”