Part 3 - Overview of the Results

3.1	The GLAs' areas of jurisdiction, which includes 8623 miles of coastline, have been broken down into 21 Areas. Where considered appropriate, these 21 Areas have been broken down further into sub-areas. Boundaries of these Areas, which are shown for illustrative purposes in figure 1 below.

Please click on the relevant area to view details.

Area 1	The Isle of Man, North Channel, the Clyde
Area 2	The Mull of Kintyre to Ardnamurchan
Area 3	Ardnamurchan to Barra Head; Cape Wrath to the Flannan Isles
Area 4	Scotland N. Coast, Orkney Is (excluding Pentland Firth)
Area 5	Pentland Firth
Area 6	Shetland Islands
Area 7	Clythness to Rattray Head
Area 8	Rattray Head to St Abbs Head
Area 9	Berwick to Sizewell
Area 10	Sizewell to Shoreham
Area 11	Shoreham to Lyme Regis
Area 12	Lyme Regis to Bude
Area 13	Bude to Cardigan
Area 14	Cardigan to Silloth
Area 15	St John's Point. Down to Rathlin Island
Area 16	Rathlin East to Tory
Area 17	Tory to Loop Head
Area 18	Loop Head to Fastnet
Area 19	Fastnet to Tusker
Area 20	Tusker to Baily
Area 21	Baily to St John's Point, Down

Reproduced from Admiralty Chart 2 by permission of the Controller of Her Majesty's Stationery Office and the UK Hydrographic Office (www.ukho.gov.uk) NOT TO BE USED FOR NAVIGATON

Figure 1: Chartlet depicting GLAs' Area Boundaries

Figure 2: Boundary Chartlet for depicting sub-areas within Areas 9-14

3.3	The GLAs have agreed areas of contiguous coastline where they will consult mutually, regarding AtoN provision. These contiguous areas were first agreed in 1980. The chartlet depicting these areas, which is contained in Annex 10.1 of the GLAs' Joint Navigational Requirements Policy document, is reproduced at figure 3 below, for information.
3.4	The GLAs have had the benefit of access to a computer database on traffic movement to assist in the evaluation of the volume of traffic. The database currently used contains details of over 3,500 routes, including ports of departure and destination, together with the number, type, size of vessels using each route annually. Although the database currently in use by the GLAs is more comprehensive than that used for the 1997-98 Review, there are some types of vessel that have not yet been included in the database, such as fishing vessels and pleasure craft, as well as specialist vessels. A plot can be created to overlay onto an Admiralty Raster Scan Chart showing routes within a given radius of a location.

Figure 3: GLAs' Areas of Consultation Chartlet

3.5	The Area overviews, which follow, contain information on commercial traffic levels from this database and figures 4 - 16 depict routes within specified search radii of selected GLA AtoN. The use of plots from this database, Ship Routes, and their overlay onto extracts from the Admiralty ARCs charts is gratefully acknowledged. For future reviews traffic data based on actual ship routes from the Automatic Identification System (AIS) transmissions of vessels will be used.
3.6	Table 2 (click here to view) depicts a blank standard Review Report form, reproduced from the GLAs' Joint Navigation Policy Document, which has been agreed for use in Reviews of this nature. Explanatory notes are contained on this blank form, which serve both as the information for the user when studying the completed review forms, as well as guidance to the GLAs when completing these forms.

3.7	Some of the information contained in the text within this Part of the Review has been sourced from the Admiralty Sailing Directions, the use of which is gratefully acknowledged. Diagrams depicting the location of the GLAs' DGPS transmitters are contained in the Admiralty List of Radio Signals Volume 2, NP282.