to Harwich on 8 October 1925 at an average speed of 16.5 knots, burning 18 tons of oil per day compared with 55 tons of coal burnt by a similar predecessor on the route. The shipyard had in 1924 completed and delivered the DFDS ship Odense, a diesel passenger-cargo ship of . After completing Jylland in 1926, sister of Parkeston, DFDS took delivery in 1927 of the Dronning Alexandrine. The series of ships was completed with Esbjerg in 1929 and England in 1932. The next DFDS ship delivered by Helsingørs after England was the first of four motor cargo ships, Tunis delivered in 1936. The Fifties & Sixties In 1950, DFDS was one of the first to introduce a door-to-door solution. Two ships were specially designed to transport small wooden containers. DFDS commenced a new service, linking the Danish mainland to Greenland. This was discontinued in 1959. In 1957, Gordana Line - cargo service Gulf of Mexico-Mediterranean - began. For the first time in DFDS's history, the company played the role of cross-trader. 1964 saw the introduction of the first ro-ro passenger ferry, when MS England entered service on a route connecting Esbjerg to Harwich. In 1965, the Transport Rationalization Department, which later became DFDS Transport, began its activities. M.S. Akershus, the first real passenger-and-car ship which could also take trucks and trailers, entered service on the Frederikshavn-Oslo route. In 1966, a hundred years after its start, the DFDS fleet consisted of 13 passenger ships, 53 cargo vessels, 4 tugboats, and 39 barges. A comprehensive new ship program commenced, with 25 ships on order. The passenger ships served on routes connecting Denmark to Norway, the UK, the Faroe Islands, Iceland, and Finland (though the Finland service was discontinued in 1966) alongside domestic services. The freight services continued, linking Denmark to the Americas and various European and Mediterranean ports. Botnia, the last steamship, was sold after more than 50 years of service. Between 1967 and 1970, four identical car-passenger ferries, originally named Kong Olav V, Prinsesse Margarethe, Aalborghus and Trekroner, entered service on the Copenhagen—Oslo, and Copenhagen—Aalborg routes. However, the Copenhagen—Aalborg service was closed in 1970. The Seventies & Eighties Subsequently, the Aalborghus and Trekroner were rebuilt and renamed Dana Sirena and Dana Corona, respectively, for ferry services on the Mediterranean. Confusingly, the ships' names were later reversed, with Dana Sirena becoming Dana Corona and vice versa. For the Denmark—UK service,