AN island in the middle of the harbour has appeared on the territory's marine charts for the first time. Despite being visible from Kowloon Bay, Hunghom, North Point and Quarry Bay, Kowloon Rock has just appeared on navigation charts. Marine Department hydrographer Nick Emerson said his staff had been out in a boat, doing preliminary survey work for the first marine charts to be produced locally, when they were surprised to find a large rock near the airport. The first Hong Kong-produced marine chart has just been produced. Previously, charts were produced by the Admiralty. 'The Admiralty had for many years published that map of the Central Harbour and they had Kowloon Rock under water,' he said. The rock is permanently above water and is large enough to count officially as an island. However, Admiralty charts display only a light beacon, and a depth reading of 0.7 metres, indicating a submerged rock. There is no yellow marking to indicate land. Roger Cavill, head of the Admiralty charting branch for the Far East Area, said: 'Kowloon Rock is on our chart, but it is underneath the symbol for the beacon.' He said the Marine Department's new charts were larger than the old ones, which meant there was room for Kowloon Rock to peep out under the beacon. Property developers will be disappointed to learn Kowloon Rock is only three metres by two. The recently-released chart is the first official chart in both Chinese and English, which has created the daunting task of finding Chinese names for dozens of unnamed rocks and small islands. Staff are having to hunt through old maps to see whether the feature already has a Chinese name. If not, one has to be created. The latest coining: Adamasta Rock off Cheung Chau is to be . Kowloon Rock is to be - at least until the Kowloon Bay reclamation, when it will disappear off marine charts.