A Quebec-based ferry ship was charged with exceeding the 10 knot speed limit in Gulf of St Lawrence.
CTMA Vacancier, travelling between Montreal and Magdalen Islands/Iles de la Madeleine, faces a possible US$6,000 fine.
Image: Magdalen Islands
The speed limit that applies to vessels exceeding 20 metres in length, was announced in August 2017 as part of an effort to prevent further right whale deaths in the gulf.
This year, a dozen or so of the endangered animals turned up dead in Canadian waters, most of them in the Gulf.
Scientists estimate there are only around 450 Right Whales left in the world.