The act of throwing overboard from a vessel part of the cargo in case of extreme danger to lighten the ship. The same name is also given to the thing or things so cast out. Gray v. Wain 2 Serg. & It. (Pa.) 254 7 Am. Dec. 042; Butler v. Wildman 3 Barn. & Aid. 320; Baruard v. Adams 10 How. 303 13 L. Ed. 417. A carrier by water may when in case of extreme peril it is necessary for the safety of the ship or cargo throw overboard or otherwise sacrifice any or all of the cargo or appurtenances of the ship. Throwing property overboard for such purpose is called “jettison” and the loss incurred thereby is called a “general average loss.” Civil Code Cal.