Canadian authorities have intercepted the ship carrying 490 Tamils including LTTE terrorists and are escorting it to CFB Esquimalt, just east of Victoria.
Public Safety Minister Vic Toews announced that HMCS Winnipeg took action after the ship carrying Tamils altered course towards Port Alberni, British Columbia.
The ship will be taken to Esquimalt harbour at CFB Esquimalt and air traffic will be restricted from above the vessel as it travels and while it is docked.
The ship was expected to sail through the Juan de Fuca Strait before landing in the Victoria region, and preparations appeared underway at nearby Canadian Forces Base Esquimalt and at a nearby naval refuelling station, where massive tents had been erected.
Two Vancouver-area jails have been told to make room for a flood of new inmates this week and a news helicopter has broadcast footage of tents and portable toilets set up at CFB Esquimalt.