31. The longline vessels range from 349 to 2, 203 long tons ( 355 to 2, 238 t ). 32. Launched in 1920, ( designated C-4 and later CL-4 ) had a displacement of 7, 050 long tons . 33. It looks like ton ( US ) and ton ( UK ) mean short ton and long ton , respectively. 34. General cargo volume declined to 14.3 million long tons , which port officials said was in line with national trends. 35. That same year, Onassis had a tanker of 45, 000 long tons built and also Niarchos had supertankers built. 36. In the 1939-45 period the Royal Air Force ( RAF ) dropped 21, 016 long tons of bombs on Stuttgart. 37. This fuel consumption was a saving from between 23 and 14 long tons a day, compared to other contemporary steamers. 38. The price for lump iron ore will rise to 37.68 U . S . cents a dry long ton unit. 39. The earliest Bessemer converters produced steel for ? a long ton , although it initially sold for around ?0 a ton. 40. Benchmark lump iron ore prices fell 10.2 percent to 34.83 U . S . cents a dry long ton unit.