Are yards still storing keels that allow shipowners to follow old pollution rules? 20 March 2024 Regulators seek to close nitrogen oxides loophole as Norway and Canada propose extending emissions control areasAuthor: Capt. Johnhttps://www.tradewindsnews.com/technology/are-yards-still-storing-keels-that-allow-shipowners-to-follow-old-pollution-rules-/2-1-1614259