Kingston Harbour

Kingston Harbour is the largest natural harbour in the Caribbean, enclosed on its southern side by the Palisadoes — a long, narrow tombolo connecting the Norman Manley International Airport with the peninsula tip at Port Royal. The harbour itself is roughly 15 km across at its widest and is sheltered from open Caribbean swell by the Palisadoes barrier and the Blue Mountains rising to 2,256 metres immediately north of the city. Port Royal, at the tip of the Palisadoes, was the wealthiest and most important English port city in the Americas in the late seventeenth century — a reputation built on trade, privateering, and the concentration of ships transiting the Caribbean trade routes. The 1692 earthquake that destroyed most of Port Royal dropped a large portion of the town into the harbour; the submerged ruins remain in approximately 6 metres of water and are legally protected as an archaeological site. The above-water Port Royal today is a small fishing community with a historic fort, the Giddy House (a colonial artillery store tilted by the 1692 earthquake), and boat service to Kingston's waterfront. The Kingston waterfront has been progressively redeveloped; the Norman Manley Boulevard runs along the Palisadoes with views across the harbour. The mixed semidiurnal tide inside the harbour has a spring range of roughly 0.5 to 0.7 metres — sheltered from Atlantic exposure by the Palisadoes. Tide data comes from Open-Meteo Marine gridded model — accuracy within plus or minus 45 minutes on timing and 0.2 to 0.3 metres on height.