F
- "The Fightingest Ship in the RCN" – HMCS Haida; gained this moniker by reason of sinking 14 enemy ships during patrols in the English Channel and the Bay of Biscay; she also sank more enemy surface tonnage than any other Canadian ship
- "The Fighting G" – HMS Gloucester
- "The Fighting J" - '"HMS Jamaica
- "The Fighting I" – USS Intrepid
- "The Fighting Lady" - USS Yorktown
- "The Five Mile Sniper" – HMAS Brisbane
- "Flatiron" – HMS Argus; from the shape of the ship
- "Forrest Fire" – USS Forrestal; humorous malapropism, also because of the fire on deck.
- "Fraser Blade" – HMCS Fraser
- "Fleet Starship" - USS Enterprise (CVN-65)
- "The Furry Wet Mound" - USS Harry W. Hill (DD-986), humorous malapropism
Read more about this topic: List Of Warships By Nickname