Seaspeed Hovercraft

Seaspeed was a British hovercraft operator active from 1965 to 1981, running high‑speed passenger and vehicle services across the Solent and the English Channel. Its fleet included the smaller SR.N6 craft for short routes and the much larger SR.N4 “Mountbatten class” hovercraft for cross‑Channel operations, capable of carrying cars and hundreds of passengers at speeds around 50–70 knots. Seaspeed’s first major cross‑Channel craft, Princess Margaret, entered service in 1968, followed by Princess Anne in 1973.

By the late 1970s, Seaspeed upgraded its SR.N4 fleet to the stretched Mk.III versions, increasing capacity to over 400 passengers and more than 50 cars, with crossing times as short as 35 minutes. Despite impressive performance, rising fuel costs and competition from other ferry technologies strained profitability. In 1981, Seaspeed merged with its rival Hoverlloyd to form Hoverspeed, marking the end of its independent operations.