Ship and boat handling with inward turning screws - CPP and Fixed

Nothing wrong with inward turning props if you know how to use them

Cajun Coonass taught me

:+1:

Yes

True!
I drove another Lurssen with inward turning CPPs. But that’s another story!!
:upside_down_face:

One of my favorite little tugs was an oddball that had inward turning props as well, and it surprised me how many previous drivers didn’t realize it. I guess not many other guys go into the engine room?! She didn’t seem to twist very well, but would walk better than others of her size and horsepower.

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I don’t know if the comments regarding inward turning screws had twin rudders. My experience was with a single centre line rudder and it was a dog.

In all fairness my experience was with twin rudders

Inward turning CPP or outward turning fixed pitch are best for manoeuvring obviously combined with twin rudders.

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Really :astonished_face:

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the handover notes regarding the vessel in question with its single rudder were:

See what ever way it wants to go and help it hoping for a happy ending.

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Well yes it is astonishing that many ship handlers do not know that including those who work on twin screw ships.:astonished_face:

The number of outwards turning CPP ships there are also demonstrates that some naval architects and engineers do not know that too….astonishing :astonished_face:

I drove one of those for a single trip one time too. It was a total dog. Had to carry a scary amount of headway in order to get anything out of the rudder. Anything below 2-3 knots, might as well not even use it.

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… control panel - lotsa fun

KaMeWa ?
https://share.google/hL3Zwo4XlmGcoVlcx

Yes KaMeWa
(as shown on pitch ind.)

You need to get the fenders out when a narrow lurrsen is backing in beside you.
Most are huge beam but Izanamai was well known, had to back in fast…

A lot of the old graham utility boats (g-boats) had inboard turning wheels. Boats didn’t pivot the best but they walked sideways like a champ.

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Yes they did. And they were great. I held upwind under the crane for crew change in 25 kt winds and 12 ft seas with the Ray G, one of the 96 footers equipped with 12-71s. It was fun watching the other captain immediately bailout as I was going up in the basket.

Plenty of quad screws in the past also. If the outboard wheels were NOT inboard turning, you knew that you were in for a tougher time.

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I ran a couple of quads also. I just remember if the outboard mains were outboard turning you used the opposite inboard engine for the walk. Long time ago, my memory is fuzzy about it.

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