Nine fishermen belonging to Thangachimadam in Ramanathapuram district were rescued on Monday night by the Sri Lankan Navy after they drifted into the territorial waters of the island nation. P Jesuraja, president, Ramanathapuram District All Mechanised Boats Fishermen Association, said that a boat bearing registration ‘IND-TN-10-MM- 75’ owned by Arockiadoss of Thangachimadam ventured into the sea with a group of seven fishermen from Rameswaram jetty on Monday morning. After travelling some distance, the engine of the boat stopped running due to a technical problem near Neduntheevu. As the fishermen had no mechanical control, the boat started drifting into the rocky areas of the sea close to Neduntheevu.