 The Royal Navy had deployed an RFA tanker and an amphibious landing ship to allow for evacuating the Pitcairn Islands if the French conducted a much larger "megabomb" test but that didn't happen.The objective was to lead a NZ government and world protest against 'illegal' atmospheric testing, demonstrate ability for 'innocent passage' in international waters, outside the French territorial 12-mile zone and, while avoiding confrontation, maintain the right to self defence.The small French frigate force probably indicated only a small nuclear trigger test of 5.4 kilotons was likely.