Join Date: Dec 2004
Location: Alameda, San Francisco Bay
Thanked 60 Times in 59 Posts
Rep Power: 13
From the “what it’s worth department”: Dad was on a Fletcher Class destroyer (2,500 tons) when it rode out the 1945 typhoon. The captain had ordered everybody who was not part of the bridge watch and engine crew down to lowest parts of the ship in the attempt to lower the CG and to keep the ship from capsizing. A ship in another division did turtle and sink. Said it was his scariest time in the Navy – worse than picket duty off Okinawa. Naval guns have gyros in their gun directors and firing circuits to cancel out the effects of roll, pitch speed and heading. I was part of the APECS III program for the Mako class and our antenna platform had to be able to tilt 50 degrees in both directions in order to accommodate high speed turns and combat in deteriorating sea conditions. Needless to say, the hydraulic actuation system was a major headache.