According to Gerhard Wiechmann, Die preußisch-deutsche Marine in Lateinamerika 1866 - 1914: eine Studie deutscher Kanonenbootpolitik, diss. University of Oldenburg, 2000 (German), p. 253Archived 2011-07-19 at the Wayback Machine, the German government had previously required Schwerin to demand $30,000.
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According to Gerhard Wiechmann, Die preußisch-deutsche Marine in Lateinamerika 1866 - 1914: eine Studie deutscher Kanonenbootpolitik, diss. University of Oldenburg, 2000 (German), p. 253Archived 2011-07-19 at the Wayback Machine, the German government had previously required Schwerin to demand $30,000.