and that's how you do it:

https://forum.gcaptain.com/t/uscg-icebr ... pnik/57552

Interesting article, why are the blades seemingly reduced in diameter and wider width wise?
Is this a common design factor with ice breakers?
Stubby effect seemingly.
Wonder what the total surface area of " bite " is on the pitch facings versus a normal proportioned equipoise prop?
Further wonder what size/ weight a newly manufactured motor would be for a similar rated output/ speed?