Why in ships you use 60Hz instead of 50Hz?

Answer 1

In the USA, and countries influenced by the USA, AC mains power is generated at 60Hz. In Europe and the UK, and countries influence by them, it is generated at 50Hz.

This low frequency, was the easiest to generate with machinery at the time the national grid was developed.

It made sense to round the frequency to 60Hz as this could then be used for time keeping easily, there being 60 seconds to a minute and 60 minutes to the hour.

The European adoption of 50Hz, probably stems from the development of the metric system. 50 being easily divided into 100 without a fraction.

Answer 2

Ships designed in North America typically use 60Hz power systems to match the frequency of the electrical grid on land. This allows for seamless power transfer when the ship is docked or in port. Using 60Hz also helps standardize equipment and electrical systems across different regions.

Answer 3

Because the equipment on shore is designed for 60 cycles.

Answer 4

Ships by their very nature have a restriction on available space, therefore it is necessary to take this constraint into account when designing any marine system.

Electric motors operating on 60Hz run faster and produce proportionately higher power outputs compared to 50 HZ, but crucially have a smaller footprint, ideal where space is at a premium.