On Sat, 12 Sep 2015 22:04:24 -0400 Max Dillon via Mercedes
<mercedes@okiebenz.com> wrote:

> The gas turbines on my old ship drove the main reduction gear by
> pushing the hot exhaust gas over a turbine, which was mechanically
> connected to drive an input shaft.  This was called a fluid coupling.

I wonder how efficient it was.

> The red. gear brought the speed down from some high RPM to about 100
> RPM, and then the propeller had variable pitch so the ship's speed
> could vary from reverse to about 30 knots forward.  Our stern would
> walk to starboard when the engines were at "all stop" because the shaft
> and prop were still spinning, which made docking maneuvering fun.

I'll bet it did. But didn't you have stern thrusters to counteract that?



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