Originally Posted by nigel1
This to can lead to some monumental disasters.
One or our boats working in Australia
was heading back to port for crew change, and the engineers ask the skipper
if they could take control of the prop pitch
(two props), and they would bring the pitch
up to maximum engine
load to squeeze out every last bit of speed.......
No such thing as a new stuff up.... quite a few ships over the years have knocked over dock
cranes etc when the engine
goes ahead instead of astern..... where we used to berth in Tasmania they had two identical incidents .... 50 years apart.
Re the rig boat one you mention.... same same on the North West shelf in the early 80's ... I think it was Eastern Tide... went clean under a platform or rig... removed funnels, mast
, top of the wheelhouse... skipper
very lucky didn't remove bottom of the wheelhouse....
For the rest... variable pitch props are largely the domain of rigboats and ro ro ferries. That said in 1972 I was on a 100,000dwt ship which , only one in her class to have one, had the biggest vp prop in existence at the time. Not for manoeuvering, but to maintain constant load on the engine.... they have since built bigger ones.