OIL IN HABOURS
CAUSES OF POLLUTION
Recent * investigations in both Auckland and Wellington have shown that the oil nuisance in the harbours, -which has been worse during the war, has generally occurred with . the pumping , out of oil fuel tanks of overseas vessels which were not built for long journeys and have been forced to utilize their ballast tanks for holding oil fuel. ■ As this oil is used, it is replaced by water to stabilize vessels and naturally when cargo is discharged vessels become still more unstable and require further water . ballast. It' is the' pumping out of such tanks containing a proportion of oil residue or sludge which causes the pollution. Referring to a recent suggestion that these tanks could be pumped out at sea, it is pointed out by those closely in touch with shipping that it would not be practicable with all types of vessels, • which . could not retain their stability with holds full of cargo and bottom tanks empty. Another cause of escape of oil not encountered in peace 'time is leakage due to vessels being strained by engagements with the enemy.
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Bibliographic details
Auckland Star, Volume LXXIV, Issue 41, 18 February 1943, Page 6
Word Count
186OIL IN HABOURS Auckland Star, Volume LXXIV, Issue 41, 18 February 1943, Page 6
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