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Where was it stated that ordinary compass can be used for navigation through Calm Belt? Ruxax 22:09, August 27, 2010 (UTC)
http://en.wikipedia.org/wiki/Intertropical_Convergence_Zone possible inspiration, or at least a real life version of Calm Belt? 71.114.107.109 04:25, May 14, 2014 (UTC)Annae