You can easily make your own mask to keep in your car so you'll always have it handy on the ferry in case they ask.... (as of June 15th it's a requirement to have one in your vehicle for each passenger) Non-medical masks and face coverings: Sew and no-sew instructions.

Here is a link to the Government website for some easy & affordable options. All you need is an old t-shirt or a bandana and a coffee filter.

https://www.canada.ca/en/public-health/services/diseases/2019-novel-coronavirus-infection/prevention-risks/sew-no-sew-instructions-non-medical-masks-face-coverings.html#_No-sew_method_using_1