Grønland   (1756) The Danish 50-gun Grønland , launched five years ago at Nyholm island near Copenhagen, departs for a scientific expedition in the Mediterranean sea. She got used to navigating these dangerous waters for she protected Danish trade ships against Barbary pirates lately. This expedition is named the Arabia mission. It has been mounted under the auspices of King Frederick V, who has wisely achieved not to get involved in the global war which begun five years ago

Aurore After having tackled the building of a marine watch in 1756, Pierre Le Roy, 50 years old, has reached a new step last year. It is said that the chronometer he presented to the Académie Royale des Sciences is as precise and reliable as famous Harrison's H4. ¤ Le Roy already invented the detent pivot escapement, or detached escapement, that he presented the Académie in 1748, the temperature-compensated balance by using bi-metallic components, and lately the isochronou

Sumner's Manual Captain Thomas Hubbard Sumner publishes a New and Accurate Method of Finding a Ship’s Position at Sea . This is the fruit...

Captain Thomas Hubbard Sumner, 30 years old, commanding the sailing ship Cabot , travelling from Charleston, Virginia, to Greenock,...

Harrison's Chronometer H1 John Harrison, 46 years old, trials his first marine chronometer H1, built last year, on a round trip between...

John Hadley John Hadley, a mathematician aged 49, presents a new instrument of navigation, the octant, also known as the reflecting...

Joachim d’Alencé, an astronomer, publishes the first release of an annual ephemeris, the ‘ Connoissance des Temps' .   He has worked   on...

Tobias Mayer Tobias Mayer, a German astronomer aged 29, publishes Tabulæ motuum Solis et Lunæ novæ et correctæ, that are tables of the...

Isaac Newton The Longitude Act is passed by   the Parliament ‘ for providing a Publick Reward for such Person or Persons as shall...

On the 11th of May, thirteen French warships run aground on the reefs of an isolated small archipelago in the West Indies. This is the final act of the Franco-Dutch war which has seen, after the series of setbacks suffered in the North sea in 1672-74, a number of naval victories of the French against the Dutch in the Mediterranean sea, then in Africa at Gorée island, and then in the Caribbean sea. The campaign in the West Indies has been successful so far and Admiral Jean II