1.  They were fishing in Canadian waters.

2.  At a news conference in Victoria, they threatened to disrupt a U.S. Navy torpedo testing range located in Canadian waters at Nanoose Bay north of Nanaimo.

3.  But Canada has embarked on a to-the-letter enforcement of regulations requiring foreign boats to make a radio check upon entering Canadian waters.

4.  Canada says the U.S. is over-fishing Pacific salmon in Canadian waters off islands along the coast of British Columbia.

5.  Canada accuses U.S. fishermen of taking too many Fraser River sockeye salmon in Canadian waters, but U.S. officials respond that Canadian fishermen also operate off the Alaskan coast.

6.  Canada accuses U.S. fishermen of overfishing in Canadian waters, while U.S. officials point out that Canadian trawlers also operate off the Alaskan coast.

7.  Canadian authorities separately arrested four Americans and seized their ships for allegedly fishing in Canadian waters.

8.  In June, Sen. Frank Murkowski called on the Coast Guard to provide escort to U.S. fishing boats passing through Canadian waters of the Inside Passage.

9.  It is widely believed by military analysts, however, that US submarines regularly tresspass on Canadian northern waters, as do the underwater vessels of Russia and France.

10.  Much of the Alaskan fishing fleet is based in Washington state and must pass through Canadian waters to reach the fishing grounds.