Boat license and electric motors. How to navigate in compliance

THE PERFECT GIFT!

Give or treat yourself to a subscription to Boats in Motion print + digital and for only 39 euros a year you get the magazine at home plus read it on your PC, smartphone and tablet. With a sea of advantages.

boat license and electric engines

With the advent of electric motors, whose commercial power output is expressed in watts (the multiple of which is kW or 1000 W) rather than horsepower, the question may arise as to whether, and over what power, a boat license is necessary. Being accustomed to associating the 40-hp limit with the maximum power of engines for which a license is mandatory and not being clear to everyone what these acronyms express, let us clarify.

 

Horsepower (HP) and watts (W): what they are and what they have in common

The horsepower is a unit of measurement that is used to indicate the physical power of motorized means of transportation. It originated at the beginning of the Industrial Revolution to get an idea of the productivity of powered machinery, that is, how much horsepower could be replaced by the machine. It is equivalent to lifting a weight of 75 kgf (kilograms force, what we call kilograms, although it is a misnomer) at a speed of one meter per second.


Click and find out how much the world’s most powerful outboard costs

Questo è il motore fuoribordo elettrico (da 300 hp) più potente al mondo. Prezzo e autonomia

 


Although in common use, horsepower is not a unit of measurement in the International System, and as its value in the past changed from country to country (British horsepower was calculated differently) and its symbol was different depending on the language, A European Council directive banned its use in favor of the watt (also of kgf, ed.). The watt is the unit of power in the International System; it owes its name to James Watt for his contribution in the development of the steam engine.


Click to see the electric outboard that works without a propeller

Fin5 è il fuoribordo elettrico che funziona senza elica


The conversion of electric motors: from HP to W

Converting from HP to W is quite simple, just multiply the horsepower value by 0.735 (approximately). Thus making 40 hp is 29.4 kW. For the reverse operation, it will suffice to divide by 0.735. This helps us understand how powerful the electric motor will be, the value of which is normally expressed in kilowatts (kW).

 

When a boat license becomes mandatory

The Recreational Boating Code (Legislative Decree No. 171/2005), having to comply with the European directive, tells us in Article 39 paragraph 1 (b) that a boating license is mandatory “with power greater than 30 kW or 40.8 hp.

James Barbaro

Share:

Facebook
Twitter
WhatsApp

Leave a Comment

Your email address will not be published. Required fields are marked *

Are you already a subscriber?

Sign up for our Newsletter

Join the Sailing Newspaper Club

Powerboats, its stories, from small open to motoryachts. Sign up now for our free newsletter and receive the best news selected by the editorial staff each week. Enter your email below, agree to the Privacy Policy and click the “sign me up” button.

Once you click on the button below check your mailbox

Privacy*


Highlights

You may also be interested in.

I salpa-ancora italiani conquistano gli USA. Li fa Quick

Italian anchor sails conquer the US. Quick makes them

When it comes to powerboats, the United States of America is a reference point. The reason is clear; it is the largest market in the world. In this scenario, the group Quick , an international accessories giant based in Italy,

Let’s talk about us. All the numbers of Motor Boats

March was a special month for our magazine, a month that saw us consolidate an important record. Every day we update you on the world of powerboats, with stories, characters, backgrounds, and sea trials, but not only. Today, however, for