Nukualofa harbour is the only deep-water harbour of the island, which determined its selection as the site for the capital. For many years Vuna Wharf was the international harbour until it was destroyed by an earthquake in 1977. A new, much larger wharf was built towards Maufanga, named after Queen Sālote. Between these two wharves is the wharf numbered '42', used by fishermen and inter-island ferries. It is the central hub for boats to the outer islands. There are usually two boats to ʻEua each day and two to Haʻapai and Vavaʻu each week. In addition to these regular services by shipping companies, private boat owners provide less regular services to smaller islands such as Nomuka and ʻEueiki.