| 1991 - 688 lapas
...reply with one long blast of a horn or whistle. When the lock is not ready for entrance, the lockmaster shall reply by four or more short, distinct blasts of a horn or whistle (danger signal). Permission to leave the lock shall be indicated by the lockmaster by one short blast.... | |
| 1979 - 1152 lapas
...reply with one long blast of a horn or whistle. When the lock is not ready for entrance, the lockmaster shall reply by four or more short, distinct blasts of a horn or whistle (danger signal). Permission to leave the lock shall be indicated by the lockmaster by one short blast.... | |
| 1984 - 676 lapas
...reply with one long blast of a horn or whistle. When the lock is not ready for entrance, the lockmaster shall reply by four or more short, distinct blasts of a horn or whistle (danger signal). Permission to leave the lock shall be indicated by the lockmaster by one short blast.... | |
| 1978 - 1150 lapas
...horn, whistle, or calls through a megaphone. When the lock is not ready for entrance, the lockmaster shall reply by four or more short, distinct blasts of a horn, whistle, or calls through a megaphone (danger signal). Permission to leave the lock shall be indicated... | |
| 1971 - 452 lapas
...or floodgate in either direction shall give notice to the lockmaster or gatetender by three long and distinct blasts of a horn or whistle or calls through a megaphone when within a reasonable distance from the lock or floodgate. When the lock or floodgate is ready for... | |
| 1997 - 694 lapas
...horn, whistle, or calls through a megaphone. When the lock is not ready for entrance, the lockmaster shall reply by four or more short, distinct blasts of a horn, whistle, or calls through a megaphone (danger signal). Permission to leave the lock shall be indicated... | |
| 1949 - 552 lapas
...or floodgate in either direction shall give notice to the lockmaster or gatetender by three long and distinct blasts of a horn or whistle or calls through a megaphone when within a reasonable distance from the lock or floodgate. When the lock or floodgate is ready for... | |
| 1968 - 432 lapas
...thing in the lock or approaches except by or under the direction of the lockmaster or his assistants. (2) Sound signals. Vessels desiring passage through...lock or floodgate is open to approaching navigation. (il) One red light to indicate that the lock or floodgate is not open to approaching navigation. (iii)... | |
| 1969 - 440 lapas
...thing in the lock or approaches except by or under the direction of the lockmaster or his assistants. (2) Sound signals. Vessels desiring passage through...will be displayed from sunset to sunrise as follows: (1) One green light to indicate that the lock or floodgate is open to approaching navigation. (ii)... | |
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