Dating

The age of a wreck can often be determined typologically from the construction and from loose objects, e.g. bottles, clay pipes, pottery, coins, pewter, anchors, cannon, bones and pollen analysis. In the Mediterranean area, amphoras can be dated according to type. The age of old wood can be determined by dendrochronology and carbon-14.

Typological dating

• Bottle and clay pipe types
• Amphora types, Heinrich Dressel
• Anchor types
• Cannon types
• Pewter Plates from São Julião da Barra, Filipe Castro

dendro-
chronology