Fixed pitch tug boat props

Simple.. Who make them?

 

There are a couple of companies here in the US, but for Norway google is your friend. "propeller manufacturers Norway" brings up about 6 companies.

 

Europe has had CP for tugs as long as I can remember.
I think US is a little conservative so I like to find someone specalize in this segment.

 

In Europe, as everywhere, there are tugboats with propellers of all kinds, CP, FP, ducted propellers, azimuthal propulsion and some other variant that at this moment I do not remember.

 

<shrug> Michigan Wheel (US), Veem (AU), or Rolla (CH) will make you anything, and lots of their old wheels can be found on propeller re-firb sites. If you know what you are looking for, just search for it on places like the propellerplace.com

 

You can have your prop 3D printed nowadays, just a few days of printing around the clock . . .

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WAAM = Wire Arc Additive Manufacturing (pics). For props they use Nickel Aluminium Bronze.

From the top of my head, the current WAAM max in post #6 is now in the range of 7 × 2 × 2 meters I think, the prop in the above video is ± Ø 1.35 m and ± 400 kg, which took about 10 days of printing in one go, while a bit smaller machines do ± 1 kg/h, about this all, if I remember well.

 

I have good experience from this Finnish company Steelcraft båtpropeller - en skräddarsydd stålpropeller http://steelcraftpropellers.fi/
Don’t know if they have any experience with tugs though.