Questions have been raised as to why more than 250 Canadian sailors will be allowed shore leave from their navy frigate without having to go through managed isolation, RNZ reports. The Royal Canadian Navy frigate HMCS Calgary is set to visit Auckland in August – the first visit by a foreign military ship since the onset of the Covid-19 pandemic. According to the Defence Force, almost all the personnel on board have been vaccinated, and by the time they reach New Zealand they will have been at sea for 17 days – three days longer than the 14-day isolation period required by the New Zealand government.