New Georgia - Kula Gulf, Hathorn Sound sketch survey by Lieut. Marx & Torlesse, H.M.S. Swinger and Lieut. Elton H.M.S. "Diamond" 1884.
New Georgia - Kula Gulf, southern approach to Hathorn Sound sketch survey by Lieut. C.W. Beresford and S.V. Messum under the direction of Lieut. Comm. W.U. Moore, H.M.S. "Dart" 1884 with additions from a sketch by Lieut. F.L. Langdale R.N. 1900