Okay: Lone Wolf, Dark Beaver, Selin, et al......
I am NOT talking about anti-piracy operations when I speak of Canadians boarding merchant vessels on the high seas.
Straight from the Canadian Navy website:
Operation  Apollo  
When: October 2, 2001-December 15, 2003  [HMCS 
Halifax was the first to deploy October 8, 2001 and 
Calgary  the last, leaving June 15, 03 and returning December 15, 2003]  
  
Where in World: Arabian Sea, Arabian Gulf  Region, Northern Indian Ocean, Afghanistan  
  
Who: 3rd Battalion, Princess  Patricia's Canadian Light Infantry (3 PPCLI) Battle Group, Canadian  Naval Task Group [a commander with three or four warships under his  command, plus a supply ship and Sea King helicopters], Long-Range Patrol  Detachment comprising two CP-140 Aurora maritime patrol and  surveillance aircraft, and a Tactical Airlift Detachment comprising  three CC-130 Hercules transport aircraft. This resulted in a total of  4,000 sailors deployed for six months on 16 out of the Navy’s 18 major  warships, some returning twice.  
  
What: An immediate response to the Sept. 11,  2001 attacks, Op APOLLO was our contribution to the war on terror. While  in concert, 
Canadians ships hailed and boarded suspicious vessels,  becoming one of the world’s leading navies in boarding party tactics.  The Operations following the end of Op Apollo have been the land-based  Operations Archer and the naval operation, Altair.  
Operation  Altair
 When: January 2004 to present. HMCS  
Toronto was the first to deploy, from January to July 2004  
  
Where in the World: Persian (Arabian) Gulf  
  
Who: 247 personnel serving in HMC Ships 
Toronto  and
 Winnipeg.  
  
What: Operation ALTAIRis the Canadian  Forces maritime contribution to the U.S.-led coalition campaign against  terrorism known as Operation ENDURING FREEDOM(OEF). Operation  ALTAIRcomprises single ship deployments. It picks up where  Operation APOLLO left off, though in a smaller format. 
Canadian Navy: Operations & Exercises
EXACTLY what the Israelis were doing........