Sailing times and capacities for BC Ferries.
BC Ferries API is a free Transportation API that requires no API key, is served over HTTPS and supports CORS, so it can be called from the browser.
Details from bcferriesapi.ca.

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The BC Ferries API is provided by BC Ferries API (bcferriesapi.ca).
Yes. The BC Ferries API is listed in the Transportation category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
No. The BC Ferries API requires no authentication, so you can start making requests without signing up.
Yes. The BC Ferries API supports CORS, so front-end JavaScript can call it directly.
Yes. The BC Ferries API is served over HTTPS, so it's safe to use in production.