Guillaume Brouscon was a French mapmaker of the Dieppe school in the 16th century. He was from the port of Le Conquet

Le Conquet

Le Conquet is a commune in the Finistère department of Brittany in north-western France.-Geography:Le Conquet is a fishing port in the northwest of Brittany...

, near Brest

Brest, France

Brest is a city in the Finistère department in Brittany in northwestern France. Located in a sheltered position not far from the western tip of the Breton peninsula, and the western extremity of metropolitan France, Brest is an important harbour and the second French military port after Toulon...

He published his Brouscon's Almanachs

Almanach

Almanach is an album by Malicorne. As before, it has a complex sound. The arrival of Hughes de Courson has given the album a more classical feel.- Track listing :# "Salut à la compagnie" – 0:55# "Quand j'étais chez mon père" – 3:44...

 in 1546, which were used for their informations on tides by English, French and Breton sailors. They allowed to known the direction of tidal currents, and to calculate tide level depending on the phase of the moon

Moon

The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...

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