CEN 303 — WELLAND CANAL AND LAKE ERIE, FIRST EDITION, 1996
Chapter 2 — Delete paragraphs 65 to 70
Replace by: 65 Locking Through.-When approaching Black Rock Lock, vessel operators must inform lock personnel, well in advance, of their desire to pass through the lock. Personnel will indicate when it is safe to proceed into the lock. Contact lock personnel on VHF-FM channel 16; channels 12 and 14 are working channels. A horn signal of two long and two short blasts indicates to lock personnel that you wish to lock through. This signal should be given regardless of any other communication you may have established. See 33°CFR 207.590 chapter°2 [of U.S. Coast Pilot 6], for details on navigating the canal and lock..
(Monthly Edition No. 4/17)