Herbert Grove Dorsey
... that Herbert Grove Dorsey invented the first practical fathometer for ships?
... that <b id="mwBy4"><a class="new" data-mw-i18n='{"title":{"lang":"x-page","key":"red-link-title","params":["Herbert Grove Dorsey"]}}' href="./Herbert_Grove_Dorsey?action=edit&amp;redlink=1" id="mwBy8" rel="mw:WikiLink" title="Herbert Grove Dorsey" typeof="mw:LocalizedAttrs">Herbert Grove Dorsey</a></b> invented the first practical <a class="mw-redirect" href="./Fathometer" id="mwBzA" rel="mw:WikiLink" title="Fathometer">fathometer</a> for ships?