Batt Reef is a coral reef off Port Douglas in Shire of Douglas, Queensland, Australia. Batt Reef is centred at 16°24′S 145°46′E / 16.400°S 145.767°E The reef is about 18 km long by 5 km wide, lying northwest to southeast, at the northern side of the Trinity Passage that leads from the inner Reef channel from Trinity Bay to the Pacific Ocean. The north-west tip of t…Batt Reef is a coral reef off Port Douglas in Shire of Douglas, Queensland, Australia. Batt Reef is centred at 16°24′S 145°46′E / 16.400°S 145.767°E The reef is about 18 km long by 5 km wide, lying northwest to southeast, at the northern side of the Trinity Passage that leads from the inner Reef channel from Trinity Bay to the Pacific Ocean. The north-west tip of the reef lies 15 km east of the Low Islets which are in turn 16 km east of Newell Beach and 11 km northeast of Port Douglas.