Props rotation direction?

[Rick DevonshireParticipant @rickdevonshire]

Best prop rotational directions for a twin screw boat?

[Rick DevonshireParticipant @rickdevonshire]

Viewed from the stern, which are the best prop rotaional directions for a twin screw boat?

Left hand clockwise – right hand anticlockwise – otherway round, or will it make any difference?…………. I just wonder if one configuration may throw out more water at the sides of the boat than the other. Rick.

[neil hpParticipant @neilhp]

i think we’ve had this conversation a number of times on different forum…..

 

the most common rotational direction for most ships of twin screw are

l/h …………anti clockwise, and r/h ……clockwise

of course there are exceptions, and no doubt these will be played out on here as on other forum,

but those directions are the norm and listed as such in the “Nicholson’s guide to Seamanship”.

neil.

Edited By neil howard-pritchard on 30/09/2009 18:52:15

[ashley needhamParticipant @ashleyneedham69188]

The Royal navy I believe has screws rotating in this direction (neils post), as it has the best efficiency, but I do believe that it makes not one jot of difference on a model, other than looking right when out of the water.

 

How about that for a contentious post ??

 

Ashley

[neil hpParticipant @neilhp]

you’re totally right, ashley.it doesn’t.lol

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