The LCM-8 ("Mike Boat") was a riverboat and mechanized landing craft used by the US Navy, during the Vietnam War. The vessel weighed 70 tons and had a crew of four: a boatswainmate petty officer, an enginerman petty officer, a nonrate fireman, and a seaman. The LCM-8s were weldedsteel and powered by two 12 V-71 diesel engines, twin screws, and rudders. The ship could carry 60 tons of cargo. A modified version, the Zippo boat, carried flamethrowers; another modified version, the LCM-8 Mod 2 was used used to fulfill command, personnel, salvage, and firefightingfunctionsThe article is about functionalism in sociology; for other uses, see functionalism''. This article includes a treatment of structural functionalism quite different from the linguistics-based structuralism of other (generally later) anthropologists like Cl.