Henry Trotter, 1911 Encyclopædia Britannica, Volume 7… (1911)
“ Of the three arms of the Danube, the Kilia, the Sulina and the St George, the central or Sulina branch, owing to its greater depth of water over the bar, had from time immemorial been the principal waterway for sea-going vessels; its average depth throughout its course, which could not always be counted on, was 8 ft., but it contained numerous shoals where vessels had to lighten, so that cargo had often to be shifted several times in the voyage down the river. It also contained numerous bends and sharp curves, sources of the greatest difficulty to navigation. ”
