The alternative would be land-based storage tanks. They also cost money. This happens sometimes. Example: http://www.telegraph.co.uk/motoring/news/6601779/Oil-

The alternative would be land-based storage tanks. They also cost money. This happens sometimes. Example: http://www.telegraph.co.uk/motoring/news/6601779/Oil-tankers-parked-off-British-coast-as-speculators-wait-for-prices-to-rise.html http://www.telegraph.co.uk/motoring/news/6601779/Oil-tankers...