Barry Docks of leads to the dock basin entrance. The channel has a least depth of , with a depth of at spring tides and at neap tides. At high-water spring tides the depth of water at the entrance to the basin is . At high-water neap tides it is . There are several moorings for yachts and small craft on the west of the tidal basin. The original entrance to the docks is wide, with two wrought-iron gates operated by direct acting hydraulic cylinders. This sea entrance leads into the Basin, (rarely called No.3 dock), that is and covers . At
International Convention Relating to Intervention on the High Seas in Cases of Oil Pollution Casualties International Convention Relating to Intervention on the High Seas in Cases of Oil Pollution Casualties International Convention Relating to Intervention on the High Seas in Cases of Oil Pollution Casualties 1969 (INTERVENTION 1969) is an international maritime convention affirming the right of a coastal State to "take such measures on the high seas as may be necessary to prevent, mitigate or eliminate grave and imminent danger to their coastline or related interests from pollution or threat of pollution of the sea by oil, following upon a maritime casualty or acts related to such a casualty". The 1967 Torrey Canyon disaster