Drawbridges, Inland
Bridge answer: will open
The draw can be opened immediately.
One prolonged blast, then one short blast
Who sounds it
Drawtender.
How it's sounded
"One prolonged blast followed by one short blast sounded not more than 30 seconds after the requesting signal." The rule sets no gap inside this signal; 1 second is used here.
A short blast is about 1 second. A prolonged blast is 4 to 6 seconds. Clips use 1 and 5 seconds.
Worth remembering
The answer is one prolonged and one short, the same sound as the normal request. It's the answer even if you asked with five short blasts during a closure period.
The same sound elsewhere
These use the same pattern, so the rules you’re under and the situation decide what it means.
More in drawbridges
Study more
See every sound signal, try the free Rules of the Road practice test, or read who gives way, and how Inland differs.
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