A red lock signal remains displayed while the chamber appears empty. What is the defensible action?
Short answer
Hold outside until the signal permits entry
The red signal is a live shore control, not a description of whether the chamber looks occupied. Hold outside the controlled area as directed and move only after the exact signal or an authorised instruction permits it. Revisit Turn the Signal Picture into an Early Action.
Sources and scope
Reviewed by Richard Moore on . This answer is scoped to european inland waterways; local rules still apply; check the current chart, publication, local rules and official operational guidance before acting afloat.
Quick check
A red lock signal remains displayed while the chamber appears empty. What is the defensible action?