This follows Canada's March 13 decision to block cruise ships carrying more than 500 people, including crew, until July.
The new ban on smaller ships also extends 'at least through June 30.'
Canadian cruise ships forbidden in Arctic waters
In addition, Canadian cruise ships are forbidden to moor, navigate or transit in Canadian Arctic waters, including Nunatsiavut, Nunavik and the Labrador Coast.
60-day notice for foreign passenger vessels
Should any foreign passenger vessel seek to enter Arctic waters, it would need to give the minister of transport 60 days’ notice and be subject to any conditions deemed necessary to ensure the protection of marine personnel and local communities from the spread of COVID-19.
These Arctic measures will remain in place through October.
Transport Canada also took actions to protect travelers and workers on ferries and other essential passenger vessels.