1 Vessel Rate of Turn-If Rate of Turn is being received for an AIS vessel, a barb is added to the end of the heading vector, at right angles and pointing in the direction of turn. 2  Vessel Course Over Ground (COG) - COG is calculated from the delta of previous GPS locations and is displayed as a dashed line. The heading is displayed as a line emanating from the bow of the ship. 2  The length of the heading line is not related to vessel speed. 3  Vessel Rate of Turn-If Rate of Turn is being received for an AIS vessel, a barb is added to the end of the heading vector, at right angles and pointing in the direction of turn.
Drug-induced comas are used to protect the brain.They work by minimizing the energy expenditure of brain cells and by minimizing or preventing brain swelling. Therapeutic, medically-induced comas are generally resorted to only after conventional treatment measures fail to keep brain swelling down.
Ongoing seizures may lead to a coma. Toxins. Exposure to toxins, such as carbon monoxide or lead, can cause brain damage and a coma. Drugs and alcohol. Overdosing on drugs or alcohol can result in a coma. Complications. Although many people gradually recover from a coma, others enter a vegetative state or die. Some people who recover from a coma may have major or minor disabilities.