VANCOUVER -- Those who rely on ferry service to get around may be impacted by the cancellation of several sailings between Vancouver Island and B.C.'s Lower Mainland. BC Ferries says it's had to cancel four round trips, or eight sailings, between Metro Vancouver and Nanaimo, starting on Tuesday. The cancellation of some sailings between Tsawwassen and Duke Point is in effect indefinitely. BC Ferries says the vessel named the Queen of New Westminster has to be taken out of service for now due to mechanical issues with the ship's propeller. The service provider did not get into details, but said the problem involves a controllable pitch propeller.