Similar lane adjustments are in store for the ports of Los Angeles and Long Beach. The twin ports handle 40 percent of America's import trade.
"This is a win-win situation" for maritime safety and whale protection, William Douros of the National Oceanic and Atmospheric Administration's Office of National Marine Sanctuaries said in a statement.
NOAA helped craft the latest shipping lane changes. The agency said lane changes that went into effect off the coast of Massachusetts five years ago have reduced the risk of whale strikes from ships.