sentences:  With its charter to the US Navy completed, in January 2018 "WestPac Express" arrived in Belfast for refurbishment at Harland & Wolff to replace the "Jonathon Swift" on Irish Ferries' Dublin to Holyhead route.It entered service in April 2018.With a design based on the "WestPac Express", Austal USA built 10 Spearhead-class expeditionary fast transport vessels for use by the United States Navy, the United States Marine Corps and the United States Coast Guard with a further two on order.