The least standardised part of the contract will be the shipping programme and nomination provisions, and it is these provisions that are the most abused or contested over the period of a lengthy COA.
Whales have minute eyes: those of a blue whale's are no larger than a small plate. 4.The whales' lungs can store at each inspiration 5,000 liters of air. They usually breathe at every 15 minutes but they can hold their breath up to over an hour in the case of the sperm whale. The humpback whale can dive to 250 m (833 ft) for 20 minutes. The blue whale's exhaling blow can be 12 m (36 ft) tall!
These whales have strong sphincter muscles surrounding their blowhole in order to prevent water from coming in and filling their lungs, which could cause these marine mammals to drown. During deep dives the blue whale can hold its breath for up to 90 minutes before resurfacing for air, however most dives usually last less than 30 minutes.