The Â£42m MV Loch Seaforth has been doing berthing trials at pier number three ahead of its introduction to the route.
The boat has already carried out trials at Ullpool.
Last month, Transport Minister Derek Mackay said he was confident the ferry will be operating by the end of May.
A new ferry built to serve on the Ullapool to Stornoway route has berthed for the first time at Stornoway harbour.