From the 1950s, Charles Badoisel attended the port of Erquy in the Côtes d'Armor.

The port of Erquy with its fishing boats which bring back from the sea the famous scallops, with the lighthouse, the bay, the beaches, the houses made of distinct pink granite always have been a source of inspiration for Charles Badoisel until the end of his life.

At the first Salon d'Angers in 1982, he exhibited an oil painting entitled "Sky, sea and sand from Erquy " which inspired the following comment : Charles Badoisel in a great lyrical impulse floods its Breton coast with violent lights from the South. " (Ouest France 26-10-1982)