World Affairs Board - View Single Post

RustyBattleship · 03-09-2007, 14:56 PM

[quote=Dreadnought;353079] I have one question at what speed is this test performed at? and would it performed as a test if they were to take any of the four Iowa's to sea again?[quote]

I doubt it. As I recall the Proceedings article, the "barn door" stop was tested at full ahead (28 to 32 knots) and several times to boot. This would have been back in the 50's or 60's. Rudder repair was never looked for because the next time Wisky was put in dry dock was for decommissioning.

"Crash Back" stops are a regular item on sea trials and the ship often practices later while in service to keep the crew trained (to allow for crew rotations so nobody is out of practice).

The Mile and an eigth for Missouri's crash back was measured by GPS and announced over the 1 MC by the ship's Captain himself. Commercial GPS is accurate to within 300 feet (learned that back in '81 when on a cruise ship). Military GPS frequencies are --- well accurate enough to guide a cruise missile to pinwheel a target (so they tell me).

03-09-2007, 14:56 PM	#16 (permalink)
RustyBattleship *Defense Professional* Join Date: 01-12-06 Location: Long Beach, CA Posts: 2,860	[quote=Dreadnought;353079] I have one question at what speed is this test performed at? and would it performed as a test if they were to take any of the four Iowa's to sea again?[quote] I doubt it. As I recall the Proceedings article, the "barn door" stop was tested at full ahead (28 to 32 knots) and several times to boot. This would have been back in the 50's or 60's. Rudder repair was never looked for because the next time Wisky was put in dry dock was for decommissioning. "Crash Back" stops are a regular item on sea trials and the ship often practices later while in service to keep the crew trained (to allow for crew rotations so nobody is out of practice). The Mile and an eigth for Missouri's crash back was measured by GPS and announced over the 1 MC by the ship's Captain himself. Commercial GPS is accurate to within 300 feet (learned that back in '81 when on a cruise ship). Military GPS frequencies are --- well accurate enough to guide a cruise missile to pinwheel a target (so they tell me). __________________ Able to leap tall tales in a single groan.