Snubbing posts Lock (water navigation)

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snubbing boat keep hitting downstream gates. note rope wrapped around snubbing post.


on horse-drawn , mule-drawn canals, snubbing posts used slow or stop boat in lock. 200-ton boat moving @ few miles hour destroy lock gate. prevent this, rope wound around snubbing post boat entered lock. pulling on rope slowed boat, due friction of rope against post. rope 2½ inches (6.3 cm) in diameter , 60 feet (18 meters) long typically used on erie canal snub boat in lock.


one incident, took place in june 1873 on chesapeake , ohio canal, involved boat henry c. flagg , drunk captain. boat leaking; crew, having partially pumped water out, entered lock 74, moving in front of boat. because failed snub boat, crashed , knocked out downstream gates. outrush of water lock caused upstream gates slam shut, breaking them also, , sending cascade of water on boat, sinking it. suspended navigation on canal 48 hours until lock gates replaced , boat removed lock.








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