propeller for speed or propeller for towing?

[Aspisi]

Hello everyone,
I would like to ask a question regarding the naval propellers.
I hope someone can help me.
If I had to install a propeller for maximum speed, but at the same time this should be drawn (for example in a trash vessel) what is the best way?
Why?

 

[riccardot5765]

Sorry the question, that I ask you not being a naval but going fishing and not only. but if you have a trawler and what else, which is supposed to work in adverse weather conditions, what do you need to have a speed propeller? Don't you want a work prop? keep in mind that for the train, except for some pelagic, there is no need for big speed, indeed. Not to mention the massacre.
In both cases, I would say that there is a working propeller.

 

[Exatem]

Hello everyone,
I would like to ask a question regarding the naval propellers.
I hope someone can help me.
If I had to install a propeller for maximum speed, but at the same time this should be drawn (for example in a trash vessel) what is the best way?
Why?

You should start seeing what kind of boat you have. if it is an open type boat, probably the best solution is a double motorization. that is to add a small outboard for the tow that allows you 2-3 knots and the motor "solito" for transfers in the fishing area and the Sunday exit with the family.
However you have to hear dragon what it says:finger:

 

[Drag]

what is the best way

the propeller is calculated at a specific point and there is maximum yield,
any other point becomes compromised, said this, the propeller is correct when in handcuff (all power e.g. 600cv to 1800rpm) the engine turns reach 1830-1850.
this is necessary to not overload the engine is also required by those who provide engines to release the warranty.
At this point, you have to evaluate even if you spend more time on driving (in fishing) or in transfers (even if they are not at the highest speed), because the working conditions (reductions) of a propeller calculated exclusively for fishing (by preventing the speech made before), are different from those of a speed propeller.
etc. because there are many other considerations to be made (motors, boat).
greetings