A list dated dated end December 1912 mentioned the German ocean going steam fishing vessel Schleswig with as homeport Altona, Germany, pennant SD 31 and call sign LGQV.
Source
Archive Ministerie van Buitenlandse Zaken A-dossiers inventory number 235 (National Archive, The Hague, Netherlands).
Source
Archive Ministerie van Buitenlandse Zaken A-dossiers inventory number 235 (National Archive, The Hague, Netherlands).