Interim Assistant Secretary WSDOT/Ferries Division, Capt. George A. Capacci, says that ongoing investigations suggest that damage to the ferry's propulsion system following a 29, July disabling breakdown may be more extensive than previously thought. "This week, WSF engineers, alongside vendor technicians from Siemens Global, Inc., continued to take part in an ongoing and thorough investigation into what went wrong in the Tacoma’s loss of propulsion power on July 29. Siemens believes the damage is more extensive than the initial review revealed. For this reason, Siemens will require additional time to complete their investigation and prepare a recommended repair plan. "This has been a challenging week for Washington State Ferries and the customers we serve.