Last week this House approved the terms of the international agreement concerning the establishment and operation of a civil LORAN C navigation system in north-west Europe and the north Athlantic. The approval of Dáil Éireann was required in accordance with Article 29.5.2º of the Constitution.
I am now pleased to have the opportunity to explain to the House in more detail the implications of this important international agreement to our fishing and shipping industries. In particular, the new navigation system, which will be established and operated in Irish waters as a direct consequence of the agreement, will enhance safety of navigation in Irish waters and will contribute towards the protection of the marine environment from casualties at sea. These are imperatives for my Department.
I will now elaborate on the background to this agreement and say a few words about the LORAN C navigation system. LORAN C is a land-based radio-navigation system which uses shore-based radio transmitters to allow users with appropriate receivers to determine their position. Although primarily a marine system it has potential application on land and in the air.
Within the LORAN C coverage area a user with an adequate receiver can determine his or her position to within 463 metres — 0.25 nautical miles — accuracy or better. The repeatable accuracy of the system, which permits a user to return to a specified point, ranges from 50 to 400 metres at the 95 per cent confidence level, making the system particularly useful for fishermen. Because of its long range, the system is attractive for application in remote areas or where the user population is too low to justify the cost of a large number of short range systems.
A LORAN C chain consists of a master radio transmitting station and two to four slaves. The chain transmits simultaneously a pulsed radio signal. The receiver defines its position on the earth by calculating the time interval between reception of signals from master and slaves.
LORAN is an acronym for long range navigation. It is the second generation of LORAN type positioning systems which were established in the 1950s to support United States Naval and Defence Department needs for accuracy positioning information throughout the world. Civilian and commercial use of LORAN C has since become widespread.
LORAN C is an all-weather accurate radio positioning system consisting of more than 13 chains worldwide. It is presently available in North America, the Far East, the Mediterranean and Saudi Arabia. Systems are currently being built in China, India, South America and Russia. At present, there are two LORAN C chains in operation in north-west Europe. They are the Icelandic chain and the Norwegian chain.
The opportunity for Ireland to participate in an extended north-west European LORAN C radio navigation system arose in 1981 when the US Government informed "host nations", Denmark, Iceland and Norway of their intention to switch to the satellite based NAVSTAR global positioning system for military use and to cease their funding and manning support of all LORAN C stations outside the US by 1994.
In order to ensure the availability of an independent alternative system in Europe, Ireland and other North Atlantic countries decided to establish and operate an extended LORAN C system in north-west Europe and the north Atlantic. The five other countries participating with Ireland in the establishment and operation of the system are Denmark, France, Germany, the Netherlands and Norway.
The countries party to the international agreement recognised that the satellite-based global positioning system would be used more and more in the future. It was agreed, however, that it would be unwise to rely on GPS without a land-based back-up system for two reasons. Firstly, GPS is at present a military system controlled by the US Department of Defence and available only when US national security permits. Secondly, GPS is subject to interruption. The shortcomings of GPS were highlighted during the Gulf War when the US re-sited satellites without warning leading to considerably reduced and interrupted service. LORAN C and GPS are complementary systems. In time, manufacturers will be marketing intergrated GPS/LORAN C receivers which will automatically select the most accurate system.
The north-west European LORAN C system will comprise six existing stations of the Norwegian and French chains, with the addition of two new stations in Norway and one in the west of Ireland. The resulting nine stations will be operated as four chains located at Boe in Norway, Ejde in the Faeroe Islands, Sylt in Germany and Lessay in France.
It is intended that the LORAN C radio navigation system will be operational in Irish waters from around March 1995. The Irish station, which will be located in County Clare, will be built and operated by the Commissioners of Irish Lights who provide a system of marine aids to navigation around the Irish coast. The transmitter will be an essential link in the four chains which will make up the north-west European LORAN C navigation system.
The LORAN C system will improve standards of aids to navigation for shipping, will enhance safety of life at sea, and contribute towards the protection of the marine environment from casualties at sea. In particular, it will improve position fixing coverage in Irish waters and will be superior to that currently being supplied by the existing short range Decca navigator system in terms of accuracy and repeatability at long range. Adoption of LORAN C will also effect savings in Exchequer funding of a radio navigation system.
The Government have opted to switch from the Decca navigator system to LORAN C for a number of reasons which I will outline to the House. LORAN C is technically superior providing better position fixing accuracy. Decca is a low power system which requires 24 transmitter stations to cover Ireland and the United Kingdom. LORAN C requires only one transmitter station to be based in Ireland. Decca suffers from adverse seasonal and night effects. Being a low-powered system Decca does not have as great a range as LORAN C. LORAN C coverage in Irish waters will extend beyond that provided by Decca, especially off the south and south-west coasts. The important fishing ports of Dingle, Castletownbere and Dunmore East are poorly served by Decca at present. All Irish inshore waters, the Irish and Celtic Seas, and Atlantic waters up to 220 nautical miles off our western shores will be covered by LORAN C signals giving position fixing accuracy of one quarter of a nautical mile, or better, 95 per cent of the time. This degree of accuracy is the acceptable standard laid down by the International Maritime Organisation which holds global responsibility for safety of life at sea and protection of the marine environment. The offshore fisheries identified by BIM as having development potential will be accurately covered by LORAN C. They are inadequately covered by Decca. LORAN C has wide international acceptance. EC policy, as set out in a recent Council decision, is to encourage member states to — and I quote —"support efforts to set up a worldwide radio navigation system including European regional LORAN C chains".
Despite the eventual advent of GPS new LORAN C chains are being built in US, China, Russia and India. Carriage is mandatory in US coastal waters.
LORAN C is a radio navigation system which is easy to use. When the north-west European chain is complete, accuracies to within one-quarter of a nautical mile will be available to users. The major advantages are the low cost of receivers and simplicity of use. At present, the cost of a basic LORAN C receiver is about £500 and as more vessels use the system, receiver set prices will fall. The primary benefit is, therefore, safety related because as receiver prices drop then there is more and more chance of the part-time inshore fisherman using the system. This is particularly the case on the western seaboard of Ireland where the traditionl farmer-fisherman, cautious to spending hard-earned revenue on non-essentials, will be encouraged to install low cost LORAN C receivers because of the major advantages such a set will bring.
I will now briefly explain to the House how the system will work in practice and its advantages to working seafarers. LORAN C will give the position of a vessel, be it a small lobster potting boat or a very large crude oil carrier, in latitude and longitude. The set is simply switched on and the vessel's position is displayed automatically. No special charts will be necessary.
For the small lobster boat carrying minimal charts most receivers may be pre-programmed to give a bearing and distance to the landfall position, for example, the fairway buoy off the vessel's home port, from any location — and all at the touch of a button. A number of positions and tracks may be pre-entered so that, for example, a craft could make its way up an estuary or channel in poor visibility, the receiver guiding it from buoy to buoy showing headings to steer, whether on track or to one side, and distance and times to run.
Some receivers even have emergency locator transmitters — ELTs — incorporated in them which will, at the flick of a switch, broadcast the position of a vessel in difficulties and in which the receiver is linked to a synthesised voice. This will result in much faster on-scene response by the rescue services. There have been incidents of searches being carried out in the wrong areas due to vessels in distress being unaware of their location or giving an incorrect position. This problem could be reduced by the use of this type of LORAN C receiver with consequent higher success rates in rescues and lower search costs. As all LORAN C stations transmit on the same frequency — 100 kHz — no tuning is required.
The safety benefits arising from LORAN C may be well demonstrated by the experience in the United States of America where after LORAN C was installed it rapidly became a major factor in marine safety so that it was ultimately declared the principal aid to navigation in the coastal waters of North America.
Total capital expenditure on the European system will amount to about £19 million of which Ireland's share will be £1.56 million, or about 8 per cent of total cost. Ireland has been fortunate in securing participation in the LORAN C system on very attractive financial terms. The French and Dutch Governments will be contributing 50 per cent and 5 per cent, respectively, of the capital expenditure for the new Irish station. EC funding will also be sought. In addition, and because of the importance of Ireland to the European chain, the main equipment manufacturer has agreed to abate the costs of construction in Ireland by one million US dollars.
The State will be paying for the installation of the LORAN C system and for the running costs. The only cost to the users of the system will be the cost of purchase of receivers. Prices of LORAN C and Decca receivers are comparable. Existing Decca wheelhouse receivers have to be replaced periodically and a dual LORAN C-Decca system will be in operation during a two year overlap period from around 1995 to 1997. This means that users will have a five year lead-in period within which to purchase the equipment. Prior to and following the introduction of LORAN C the Commissioners of Irish Lights will arrange a mobile educational awareness programme on use of the system to assist fishermen during the transition period.