Pronunciation: [skˈa͡ɪ sˈe͡ɪl] (IPA) 
Sky sail is spelled using the IPA phonetic transcription as /skaɪ seɪl/. The first syllable "sky" is pronounced as /skaɪ/, with the "s" sound followed by the long "i" sound. The second syllable "sail" is pronounced as /seɪl/, with the "s" sound followed by the long "a" sound, and lastly the "l". The word "sky sail" refers to a sail positioned high up on a sailing ship, typically above the topsail or royal sails.
The term "sky sail" refers to a technological innovation in the field of sailing that involves the use of large, specialized kites or sails attached to ships or vessels. These sky sails are designed to harness wind power in order to assist with propulsion and increase the efficiency of the ship's movement through the water.
Sky sails are typically made of lightweight, high-strength materials such as nylon or polyester fabric, and are attached to the ship via a network of ropes and pulleys. When deployed, the sky sail catches the wind and uses its force to generate additional thrust, effectively reducing the reliance on conventional fuel sources.
The concept of sky sails is rooted in the principles of aerodynamics, utilizing the wind's power to create a pulling force that propels the ship forward. By employing this technology, ships can take advantage of favorable winds to increase their speed and decrease fuel consumption, resulting in reduced emissions and potentially significant cost savings.
Sky sails have been increasingly adopted in the shipping industry as a means of embracing sustainable practices and reducing the environmental impact of maritime transport. This innovative solution offers a promising opportunity for both commercial and recreational vessels to enhance their efficiency while minimizing their carbon footprint.
In summary, a sky sail is a large, specialized kite or sail that uses wind power to assist with propulsion and increase the efficiency of ships or vessels, resulting in reduced fuel consumption and environmental impact.
A sail sometimes set above the royal.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "sky sail" is a compound term formed by combining the words "sky" and "sail".
1. Sky: The word "sky" originated from the Old Norse word "ský" and the Proto-Germanic word "skaiwaz". It has roots in the Proto-Indo-European word "skewh", meaning "cloud" or "heaven". The term ultimately refers to the celestial expanse or the upper atmosphere above the Earth.
2. Sail: The word "sail" emerged from the Old English word "segel", and is also related to the Old High German word "segal". It is linked to the Proto-Indo-European word "sek", which means "to sting" or "to be sharp". This likely alludes to the way a sail catches the wind, propelling a vessel through the water.
