Sextant - Official Terraria Wiki

↑ 1.0 1.1 Information taken from the Desktop 1.4.0.5 source code, function GetAnglerReward() in Terraria.Player.cs. Note that the actual drop rate is actually slightly less than 3.33*1/30 (3.33%), because numerous other rewards are rolled before this item is. There may be inaccuracies, as the current Desktop version is 1.4.4.9.