§ Mr. Spearing
To ask the Secretary of State for Transport what additional navigational lighting or related equipment is required for a sea-going vessel plying between the Seacon terminal on the Isle of Dogs on the River Thames to any inland port on the River Rhine capable of handling a vessel of up to 2,000 tonnes which are additional to those required by international rules for the sea; and under what authority any such additional requirement would be made. 
§ Mr. Norris
[holding answer 18 April 1995]: The requirements for navigational lights on the River Thames conform to international rules as set out in the International Regulations for Preventing Collisions at Sea in 1972. There are no additional requirements.
The requirements for navigational lights in German inland waters are matters for the German authorities. It is for the owners and operators of ships operating between the UK and ports on the Rhine to ensure that they are aware of any localised navigational regulations.