The Émile de Béco in Ixelles is the same person to whom the bassin Béco is referring to. For the latter one, it was his job as chairman of the "Société anonyme du Canal et des Installations maritimes de Bruxelles" (from 1909 until his death) that was the reason why he was honored in the port of Brussels. Although it should be Béco (the way Wikipedia spells it), let's at least try to spell it the same way in both languages and in both cases (either with an "e" or an "é", not that anyone cares anyway). Best regards.