Ma'anar ƙamus na kalmar "Fleet Admiral" tana nufin matsayi mafi girma a cikin sojojin ruwa na Amurka, daidai da Janar na Sojoji a cikin Sojojin Amurka ko Janar na Sojan Sama a Rundunar Sojan Sama na Amurka. Matsayin tauraro biyar ne kuma galibi manyan hafsoshin sojojin ruwa ne ke rike da su wadanda suka bambanta kansu a matsayin kwamandan runduna ko jiragen ruwa. An ƙirƙiri wannan matsayi a cikin 1944 don gane jagoranci na kwarai kuma ba kasafai ake ba da shi ba.