Saint-Gervais Bay, Fos-sur-Mer 2013

Excavation director: Luc Long

Wreck Presentation

Recently discovered in the Bay off Saint-Gervais (Fos-sur-Mer, France), by 4 or 5 m deep, a portion of antique shipwreck, located at a few hundred meters away from the shore, has just been investigated by Luc Long and his team (DRASSM-2ASM).

One of the 1845 photographs shooted on site. The important turbidity of water is well visible on the right.

The group of well preserved remains, including 7 ribs and several planks of the hull and belongs to the high parts of a large-sized roman ship. The position of the ribs and their morphological characteristics looks like an extremity of the ship, after the lower part of the ship, where are begining the « allonges » of the ribs.

The archaeological artefacts mixed around these vestiges of wood, are chronologically divided between the first century BC and the Vth century AD. Thanks to the detailed study of this little portion of ship, the following objective consisted to clarify if these vestiges belong to one of the antique remains located in this large area (ship-wrecks Saint-Gervais 1-4).

On the left side Sketche made on board by Luc Long. On the right the first 3D elaboration, scaled by 2 calibrated rules.

The results of xylologic analysis (C14 and dendrochronology) and photogrammétric shots operated by Olivier Bianchimani and Solène Basthard-Bogain (Septentrion Environment) and restituted by Pierre Drap (LSIS-CNRS), will bring us very important informations. The restitution starts in August 2013, the first result after orientation and scale of 1185 photographs, made with a Nikon D700 inside a housing from Nauticam. Light is managed by two strobe Ikelite.

Orientation of all the photographs, here only the points computed for the orientation are visible. The next step is densifying and meshing, then we will have to choose the way to exploit these data in order to produce a document relevant for the archaeologist.
This remains the main problem ...