§ Mr. William RossTo ask the Secretary of State for Northern Ireland what is the minimum depth of water at the river Bann, Barmouth at low tide; and what is the depth at Coleraine harbour at similar tide point.
§ Mr. Peter Bottomley[holding answer 27 February 1990]: The minimum depth at low tide at the Barmouth is 4m and at Coleraine harbour is 4.3m.
§ Mr. William RossTo ask the Secretary of State for Northern Ireland what is the minimum depth of water in the shipping channel to Belfast port at low tide.
§ Mr. Peter Bottomley[holding answer 27 February 1990]: It varies from 5.5m to 9.1m.
§ Mr. William RossTo ask the Secretary of State for Northern Ireland what is the minimum depth of water in the shipping channel to Londonderry port at low tide.
§ Mr. Peter Bottomley[holding answer 27 February 1990]: It is 6.9m.