The Réseau des Bains de Mer (French pronunciation: [ʁezo de bɛ̃ də mɛʁ], RBM) was a group of five metre gauge railways centred on Noyelles-sur-Mer, with a total route length of some 68 kilometres (42 mi).

This avoided the duplication of routes that was seen in the UK and meant that the large cities and towns were connected.

The citizens of the smaller towns and villages also wanted railways to be built to connect them to the network.

The Réseau des Bains de Mer system came under the control of the Somme Department.

Stations were provided at Sailly-Bray, Sailly-le-Sec, Nouvion-en-Ponthieu and Forest-l'Abbaye, where there was a junction with the Abbeville-Dompierre line.

The final line to be built to Noyelles was a metre gauge branch to Forest l'Abbaye which opened on 24 August 1892, and closed to passengers on 10 March 1947 and freight on 1 February 1951.

It ran from the Chemin de Fer du Nord station at Abbeville (North) to Dompierre-sur-Authie, with a junction at Forest-l'Abbaye with the line to Noyelles.

There were stations at Abbeville Porte Saint Gilles, Abbeville Porte du Bois, Drucat, Plessiel-Drucat, Canchy-Neuilly, Lamotte-Buleux, Forest-l'Abbaye, Forêt du Crécy, Crécy-Estrées, Wadicourt and Dompierre-sur-Authie.

The 26-kilometre (16.16 mi) long line would have had intermediate stations at Tortefontaine, Douriez, Saulchoy, Saint-Rémy-au-Bois, Campagne-les-Hesdin, Buire-le-Sec and Bois-Jean.

A halt served the hamlet of Le Plessiel, part of the Drucat commune.

The râperie extracted the raw juice, which was then sent by pipeline to the sugar factory of Abbeville.