33 CFR Subpart A
General Requirements
August 2, 2023
§
117.1
Purpose
§
117.4
Definitions
§
117.5
When the drawbridge must open
§
117.7
General requirements of drawbridge owners
§
117.8
Permanent changes to drawbridge operation
§
117.9
Delaying opening of a draw
§
117.11
Unnecessary opening of the draw
§
117.15
Signals
§
117.17
Signalling for contiguous drawbridges
§
117.19
Signalling when two or more vessels are approaching a drawbridge
§
117.21
Signalling for an opened drawbridge
§
117.23
Installation of radiotelephones
§
117.24
Radiotelephone installation identification
§
117.31
Drawbridge operations for emergency vehicles and emergency vessels
§
117.33
Closure of draw for natural disasters or civil disorders
§
117.35
Temporary change to a drawbridge operating schedule
§
117.36
Closure of drawbridge for emergency repair
§
117.39
Authorized closure of drawbridge due to infrequent requests for openings
§
117.40
Advance notice for drawbridge opening
§
117.41
Maintaining drawbridges in the fully open position
§
117.42
Remotely operated and automated drawbridges
§
117.47
Clearance gauges
§
117.49
Process of violations
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