Newcastle Shipyards has launched it’s largest build-to-date, the 55m (180ft) Newcastle 5500 Series superyacht, Harbour Island.

She will spend a few weeks in St Augustine for dock tests and sea trials before heading south to Rybovich Superyacht Marina and Refit.

Harbour Island is a six-stateroom custom yacht featuring two king master suites and a VIP king guest suite below.

Additional amenities include the infinity pool on the split-level sundeck, the raised veranda on the main aft deck and a built-in seating area aft of the alfresco dining on the skylounge aft deck.

Harbour Island will make her world debut at the Fort Lauderdale International Boat Show in October.