Monitor

El Plata-class monitor HMS Raglan USS Tecumseh Milwaukee-class monitor M29-class monitor HMS Erebus HMS Mersey Erebus-class monitor Conqueror-class monitor Adder-class monitor Marshal Ney-class monitor HMS M33 HMS Abercrombie Sava Lord Clive-class monitor Humber-class monitor Abercrombie-class monitor Amphitrite-class monitor HMS Terror Alagoas breastwork monitor Cerberus-class monitor Gorgon-class monitor HMS M22 river monitor John Ericsson-class monitor Roberts-class monitor Kalamazoo-class monitor M15-class monitor Pará-class monitor Passaic-class monitor Rhein-class monitor USS Amphitrite USS Dictator USS Monadnock USS Tonawanda USS Yuma USS Monitor Novgorod