5. In sub—paragraph (d) of regulation 15(3), the following shall be substituted for the second sentence—
“A manually operated alternative system shall be provided and may be used in the event of such a failure, but the defective unit shall be made operable as soon as possible.If a tanker with a defective unit is within the United Kingdom or the territorial waters thereof, the Secretary of State may allow the tanker to undertake one ballast voyage before proceeding to a repair port.”.