sentences:  Admiralty Sailing Directions of 1917 further claimed that "Tryal Rocks awash at high water are near the outer edge of the S.W.part of Monte Bello Islands reef and five miles (8 km) off the North extreme of Barrow Island".In 1928, Commander Rupert Gould made a survey of the area and declared that Ritchie Reef was definitely the Tryal Rocks.