Head Tide-60 Minutes
Fair Tide-30 Minutes
Slack Tide-45 Minutes
The minimum running time between the Administration Office (Station 388) and Hog Island Channel westerly entrance Buoy No. 1 (Station 661) is prescribed as follows:
Head Tide-46 Minutes
Fair Tide-23 Minutes
Slack Tide-35 Minutes
The running time at slack water will apply to any vessel which enters that portion of the canal between stations 35 and 661, within the period of one-half hour before or after the predicted time of slack water as given in the National Ocean Survey publication "Current Tables, Atlantic Coast, North America." The minimum running time during a head tide or a fair tide shall apply to any vessel which enters that portion of the canal between Station 35 and 661 at any time other than designated above for time requirements at slack tide. Vessels of any kind unable to make a through transit of the land cut portion of the canal against a head current of 6.0 knots within a maximum time limit of 2 hours 30 minutes shall be required to obtain the assistance of a helper tug at the vessel owner's expense or await favorable tide conditions prior to receiving clearance from the marine traffic controller. In the event vessels within the confines of the canal fail to perform and are unable to make sufficient headway against the currents, the marine traffic controller may activate a helper tug in accordance with paragraph (k) of this section.
33 C.F.R. §207.20