Daniel Faraday carried a sextant with him to the Island in his backpack. Faraday showed other survivors the sextant while notifying them that in order to leave the Island by sea, he would need to calculate a new bearing, and to do so, he needed to determine where the Island was in time.

Daniel looks at the sextant. ("The Lie")

At nightfall, Daniel held the sextant again, forlornly, but was not shown to be making use of it.

v • d • e Daniel Faraday Portrayed by Jeremy Davies and Spencer Allyn Centric episodes "The Variable" Shared and non-centric flashes "Confirmed Dead" Flashback characters Female anchor • Caroline • Frank Lapidus • Charlotte Lewis • Eloise Hawking • Miles Straume • Theresa Spencer • Unnamed ROV operator • Charles Widmore Items Experiments • Gas masks • Journal • Machine • Map • Sextant • Zodiac raft See also Eloise the rat • The Kahana