The Jeunesse Maritime Chrétienne is a mass movement to reconquer the maritime world for Christ. It was at the Sea Apastolate Congress at Boulogne-sur-Mer, held in September 1929, that the first suggestion of forming a maritime section of the Jocistes was made by Père Lebret, O.P. This Dominican, who must be given the credit for launching the J.M.G., was formerly a lieutenant in the French navy. In collaboration with the Abbé G. Havard of Saint-Malo he drew up provisional rules. Cardinal Charost, Archbishop of Rennes, gave them a cordial blessing, and the new oeuvre was established in his diocese. The first group of Young Christian Seafarers to be formed was on the Ile-de-Sein, a small island off Finisterre, mostly inhabited by fisher folk. In January 1930 the first issue of Jeunesse Maritime was published. For the past seventeen years this monthly magazine has been the official mouthpiece of the J.M.C. During the next few months other groups were set up in many maritime parishes of Brittany, Normandy, the Côtes-de-Nord, and elsewhere in France. The movement spread rapidly. A large body of members of the J.M.C. took part in the French National Pilgrimage at Lourdes in August 1930.