31. She conducted hydrographic surveys off Brest from 1864. 32. The research ships, which include hydrographic survey vessels, receive hull numbers beginning with " S ". 33. He participated in a preliminary hydrographic survey of Midway Island for a cable station in 1901. 34. The NOAA fleet provides hydrographic survey , Newport, Oregon. 35. Hydrographic surveys continued in the Caribbean until 1917, including operations in Panama, Nicaragua, Honduras, and Cuba.36. Nautical charts are based on hydrographic surveys . 37. From 1885 to 1889 she performs various tasks in the de la Plata rivers, including hydrographic survey . 38. Oceanographic, seismographic and hydrographic surveys were completed after each nuclear blast was completed to further the data. 39. U . S . Coast and Geodetic Survey diagram of wire-drag hydrographic survey operations, ca . 1920. 40. The ship carried out an extensive hydrographic survey and diving operations in the area off the Tharangambadi coast.
