On Sat, 11 Dec 2004 09:09:26 -0500, Jeff Morris
wrote:

... here's a picture of the lock in the Shinnecock Canal:

http://www.sv-loki.com/shinnecock.jpg

.....

Looks like the right channel is the lock with upper and lower lock
gates. The two channels on the left look like tide gates to me.

On an inland canal like the Grand Union for example,
the tide gates are replaced by a weir/barrier to hold a constant
upstream height. Here's a flight of locks I walked up, last week,
near Kenilworth which illustrates these features:

=phRIQMCBh9i7Nllq

Brian W

having two gates does not make it a lock. Using to raise or lower boats makes
it a lock.

geesh. call it peanut butter and that makes it a sandwich?

... here's a picture of the lock in the Shinnecock Canal:

JAXAshby wrote:
having two gates does not make it a lock. Using to raise or lower boats makes
it a lock.

having two gates on either end of a chamber means that it was built as a
lock. Since I've posted about a dozen references that it was actually
used in that manner would seem to indicate that it really is a lock.

Now you've made a claim that the gates are kept open while the current
flows in both directions. Whether or not that's true does change the
fact that its a lock. However, you've been completely unable to
substantiate your claim. Since I've cited about a dozen references,
includes the Army Corps, NOAA, the agency the owns and operates it, the
company that repairs it, and a number of people who have gone through
recently, and all say its a lock, that mean that I win, 12 zip.



geesh. call it peanut butter and that makes it a sandwich?


... here's a picture of the lock in the Shinnecock Canal: