5.—Section 25 of the Principal Act is hereby amended by—

(a) the insertion in subsection (1) of the following paragraph:

“(aa) take samples of oil, oily mixtures, noxious liquid substances, harmful substances, sewage or garbage from the ship concerned;”,

and

(b) the insertion of the following subsection after subsection (1):

“(1A) A harbour-master may enter any oil handling facility within the harbour in respect of which he is harbour-master and there make inspections and carry out such tests as he thinks fit—

(a) in relation to the carrying on of any activities in such facility, including the monitoring and assessment of the effects on the marine environment of such activities, or

(b) for the purposes of monitoring and assessing the effects on the marine environment of any oil pollution incident.”.