From Wikipedia, the free encyclopedia. The following is a list of the world's largest cruise ships over 100,000 gross tonnes, including ships that are in service, under construction, and out of service.Ships are ranked by gross tonnage.rom Wikipedia, the free encyclopedia. The following is a list of the world's largest cruise ships over 100,000 gross tonnes, including ships that are in service, under construction, and out of service. Ships are ranked by gross tonnage.
Advanced clubbing is obvious, but early clubbing may be difficult to diagnose. Clubbing is present if the transverse diameter of the base of the fingernail is greater than the transverse diameter of the most distal joint of the digit. The nail base angle measures more than 160Â°.
Cyanosis is a purplish-blue colour to the skin. Newborns with cyanosis are sometimes called âblue babies.â. Cyanosis means that there is less oxygen being carried by the bodyâs blood cells. In this situation, there may not be enough oxygen being carried to the tissues in the body. The colour is caused by high levels of reduced (deoxygenated) hemoglobin in the blood near the surface of the skin.