During operations, Nimitz-class carriers sail at the centre of a carrier battle group of ships that includes guided missile cruisers, destroyers, frigates, logistics ships and submarines.

BBC: News | In Depth | Military Fact Files

That way, they have a committed group of people that will most likely purchase the product once it ships.

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The group even suggested that if large ships went faster through the whales' habitat, the chance of a collision would be lower.

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