Posted by oldtanker on September 20, 2017 at 09:11:01 from (66.228.255.59):
In Reply to: Liberty Ships 9/19/42 posted by Ultradog MN on September 20, 2017 at 03:43:52:
Quoting Removed, click Modern View to see
Actually at the time that Liberty ship production exceeded losses we were not that good a finding Uboats. Early on ADM Donitz made the boats report in daily. We, the allies used radio direction finding to try to steer the convoys around known locations of Uboats. It wasn't until we could cover the entire routes with air searches that the Uboat arm admitted that they had lost the fight. By 1944 airborne radar was the key. They could detect a Uboat on the surface and attack. Good short read on this subject: https://en.wikipedia.org/wiki/Hunter-killer_Group
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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