The munster roll is a document accrediting certain administrative requirements of labor and maritime order from which all ships must be provided. In addition to the photograph of the boat, it provides data such as the type of boat and propulsion system, the date of construction, the owner, the crew and the entrances and exits of the ports. In the Provincial Historical Archive of Almería 604 rolls are guarded and all the photographs they contain are digitized. Military Command of the Navy.