[1] The Sulina branch starts at a bifurcation of the Tulcea distributary, at Sfântu Gheorghe, Tulcea,[2] runs east for 71.7 km (44.6 mi),[3] and reaches the Black Sea at the port of Sulina.

As the Sulina Branch was wide and shallow, between 1858 and 1872 jetties were built.

[5] In September 1991, the Ukrainian-flagged vessel Rostock [ro] ran aground and sank in the Sulina branch at Mila 31, near Partizani village, partially blocking traffic; the last piece of the wreck of the ship was finally brought to the surface in 2015.

[6] In the course of removing the wreck of the Rostock, three divers lost their lives, including John Whitekettle (from the United States) and Anthony James Eke (from England); a memorial dedicated to them was erected on the right bank of the Sulina branch, next to the shipwreck site.

[7] This Tulcea County location article is a stub.