a distinct white ensign
... that until a distinct white ensign was adopted in 1968, Royal New Zealand Navy vessels at sea might have been indistinguishable from British vessels?
... that until <b id="mwAkE"><a href="./New_Zealand_White_Ensign" id="mwAkI" rel="mw:WikiLink" title="New Zealand White Ensign">a distinct white ensign</a></b> <i id="mwAkM">(pictured)</i> was adopted in 1968, Royal New Zealand Navy vessels at sea might have been indistinguishable from British vessels?