15. 2. 89 Official Journal of the European. Communities No L 43/27 (Acts whose publication is not obligatory) COMMISSION COMMISSION DECISION of 21 December 1988 relating to a proceeding under Articles 85 and 86 of the EEC Treaty (IV/30.979 and 31.394, Decca Navigator System) (Only the English and Dutch texts are authentic) - (89/113/EEC) THE COMMISSION OF THE EUROPEAN COMMUNITIES, Having regard to the Treaty establishing the European Economic Community, Having regard to Council Regulation No 17 of 6 February 1962 First Regulation implementing Articles 85 and 86 of the Treaty ("), as last amended by the Act of Accession of Spain and Portugal, and in particular Articles-3 and 4 thereof, Having regard to the notifications- made by Racal Group Services under Article 4 of Regulation No 17 on 20 May 1983 and on 14 November 1984, Having regard to the applications made to the Commission by ‘Landesfischereiverband  Schleswig- Holstein’ on 21 December 1983 and Rauff & Serensen on 26 February and 9 April 1985, to find pursuant to Article 3 of Regulation No 17 that Racal-Decca Navigator Limited (which became Racal-Decca Marine Navigation Limited on 3 December 1985) had infringed Article 86, Having regard to the. information obtained by the Commission pursuant to Articles 11 and 14 of Regulation No 17, Having regarci to the Commission Decision- of 30 September 1987 to_initiate proceedings in this case, Having given the undertakings concerned the opportunity - to make known their views on the objections raised by the Commission, in accordance with Article 19 (1) of Regulation No 17 and with Commission Regulation No () OF No 13, 21. 2. 1962, p. 204/62. 99/63/EEC of 25 July 1963 on the hearings provided for in Article 19 (1) and (2) of Council Regulation No 17 (), After consulting the Advisory Committee on Restrictive Practices and Dominant Positions, Whereas : I. THE FACTS The undertakings involved in these proceedings (1)  (a) Racal-Decca Marine Navigation Ltd (hereinafter called Racal Decca), is an affiliate company of Racal Electronics plc, a holding group-operating world-wide and incorporated in the United Kingdom. Racal Decca’s principal-activities are the design, manufacture - and 'marketing of navigational aids and other: electronic equipment. Racal Electronics plc’s total turnover in 1987/88 was £ 1 370 million. (2 (b) AP Radiotelefon A/S (hereinafter called ‘AP’) incorporated in Denmark, is an affiliate company of the world-wide Philips group, which -is headed by NV Philips Gloeilampenfa- brieken in the Netherlands. (3)  (c) Polytechnic Marine plc of the United Kingdom, later Polytechnic Electronics plc, hereinafter referred to as ‘PE’, is a manufacturer of civil and military navigation systems. Since-1985 it has had a majority- interest in Navstar SA of Switzerland -which is its principal distributor. () OJ No 127, 20.°8. 1963, p.-2268/63.