Jim Stewart wrote:
Bob Swinney wrote:
Big ships don't stop or reverse the engine out at sea to manuever. It's
not
practical on a diesel or steam ship. Just use the rudder.
Large steam turbine-driven ships have an "astern" turbine just for that
purpose. The regular turbine can't be reversed and it is to costly to
design gearing for it.
I worked on engine room controls back in the 70's. I
recall that they had:
turbine---gearbox----propshaft
With no clutches other than to disengage the turning gear.
The turbine case had 2 sets of steam inlets, one connected
to the forward throttle and the other connected to the
reverse throttle.
The ships that I spent the most time on were from the
APL line.
Yep, that's what we had on the Arkansas (CGN-41).
Brad
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Brad Millard On-line ballistics for small arms...
www.eskimo.com/~jbm
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