What are the largest ports of the Pacific and Indian oceans. On the shores of which continents are they located?

a) Pacific – Vladivostok, Nakhodka, Singapore, Sydney
b) Indian – Dubai, Mumbai, Chennai, Karachi
c) Atlantic – Rotterdam, New York, Marseille, Hamburg
Mainland Eurasia: Vladivostok, Nakhodka, Shanghai, Singapore.
Mainland Australia: Sydney, Canada, Vancouver, Aden (Yemen), Bombay, Calcutta, Madras (India), Karachi (Pakistan), Rangoon (Myanmar), Singapore (at the exit from the Pacific Ocean).

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