0 ▁October , ▁during ▁an ▁up keep ▁period ▁in ▁Sub ic ▁Bay , ▁Sem in ole ▁rel ieved ▁. ▁On ▁the ▁ 2 3 rd , ▁she ▁entered ▁Ka oshi ung ▁for ▁a ▁port ▁visit . ▁ ▁On ▁the ▁ 2 8 th , ▁Sem in ole ▁proceeded ▁independently ▁to ▁join ▁the ▁AR G ▁in ▁Da ▁N ang ▁on ▁the ▁ 3 0 th . ▁She ▁was ▁det ached ▁on ▁ 1 3 ▁November ▁for ▁a ▁round - tri p ▁voyage ▁to ▁Singapore ▁and ▁rejo ined ▁the ▁task ▁group ▁on ▁the ▁ 2 6 th . ▁Sem in ole ▁got ▁under way ▁for ▁Hong ▁Kong ▁on ▁ 6 ▁December , ▁arriv ing ▁two ▁days ▁later . ▁ ▁After ▁sp ending ▁Christmas ▁in ▁Hong ▁Kong , ▁Sem in ole ▁stood ▁out ▁of ▁the ▁har bor ▁on ▁ 2 7 ▁December ▁ 1 9 6 8 , ▁to ▁re join ▁her ▁unit ▁off ▁the ▁Vietnam ese ▁coast ▁near ▁Da ▁N ang . ▁ ▁Sem in ole ▁was ▁red es ign ated ▁L K A - 1 0 4 ▁on ▁ 1 ▁January ▁ 1 9 6 9 . ▁ ▁On ▁ 1 2 ▁January , ▁Sem in oles ▁squad ron ▁participated ▁in ▁the ▁M ộ ▁ Đ ứ c ▁demonstr ation . ▁Sem in ole ▁remained ▁in ▁the ▁M ộ ▁ Đ ứ c ▁area ▁alone ▁to ▁continue ▁the ▁demonstr ation , ▁thus ▁missing ▁Operation ▁B old ▁Mar iner , ▁the ▁largest ▁am ph ib ious ▁operation ▁since ▁the ▁In ch on ▁land ings .