The occupation of Eritrea by Ethiopia gave way to build ethiopian Navy by many western countries . After 35 year , ( 1955 - 1990 ) Shaebia wrote the last chapter of Ethiopian Navy ( Fenqil ) . The struggle for the independence of Eritrea was achieved in 1991 . Today Ethiopian Navy is " Brown Water Navy " , because it can be only used in Lake Tana . Zemat Ekud .