Other uses include hydrofoils, hovercraft and fast ferries. Ferries and hydrofoils connect Anzio to Ponza. Ferries and high-speed hydrofoils arrive regularly from Piraeus. Salina has two ports, Santa Marina and Rinella, served by ferries and hydrofoils. Maritime connections have been improved with modern high-speed craft, including hydrofoils and catamarans. The Flying Phantom is a catamaran that uses curved daggerboards as hydrofoils. It was equipped with frigates and corvettes, fast patrol boats, hydrofoils, helicopters, and light aircraft. Each yacht employed hydrofoils and a wing sail. Boeing began adapting many systems used in jet airplanes for hydrofoils. Some modern hydrofoils use fully submerged inverted T-shape foils. Lifting structures used in water, include various foils, such as hydrofoils. Instead they exhibit structures similar to hydrofoils in order to provide hydrodynamic lift. Early hydrofoils used V-shaped foils. The flattened forelimbs would likely have acted as hydrofoils. Seaflite operated hydrofoils between the major islands in the mid-1970s.