FORELAND BUOY. This floating buoy guarded the entrance to Belfast Lough at Foreland. It was anchored to the ground with a heavy chain and harness just like the one down outside the fence near the engine room. Each buoy has its own signal, just like a light-house. Buoy Character 0.6 x 5.4 – a 6 second flash every minute. Buoy weight: 8.5 tons with the six gas bottles, 7 tonnes without bottles. The Irish Lights vessel GRANUAILE is fitted with buoy lifting gear and moves constantly around the coast checking all the buoys.