The 217 meter long, 20668 dwt container ship Horizon Tacoma became disabled off Vancouver Island, British Columbia, Canada.  The Horizon Tacoma lost propulsion and was dropped anchor until the crew was able to complete temporary repairs.  Several tugs were sent to provide assistance as the Horizon Tacoma proceeded to Puget Sound.   Coast Guard Inspectors are conducting an investigation into the cause of the incident.  No reports of injuries or pollution being released.