Japan aims for sustainable utilization under proper management of an abundant whale resource in future years. This has already been possible scientifically and legally. Anti-whaling protests don't provide reasonable grounds that contradict sustainable whaling.
Selected Papers No.4(p.10)

No matter how much the commercial whaling supporters say that they will not allow over-exploitation of whales, it doesn't provide any guarantee of full compliance in face of worldwide resurgence of commercial whaling. Commercial and industrialized whaling is never ever sustainable. Greenpeace is opposed to commercial whaling.

Fourteen whales, thirteen of which died, were stranded on the shores of Oura, Kagoshima last January. Along with the difficulty, which was beyond imagination, of just moving each whale whose bulk was more than 20 tons, the town went through an awful lot of trouble, as if it were struck by a natural calamity.
Selected Papers No.4(p.12)