Abaft
Adverb
1. At or near or toward the stern of a ship or tail of an airplane; "stow the luggage aft"; "ships with square sails sail fairly efficiently with the wind abaft"; "the captain looked astern to see what the fuss was about".
:
Shipping A point beyond the midpoint of a ships length, towards the rear or stern .
:
French VERS l'arrière, sur l'arrière du travers (abaft the beam), sur l'arrière de, en arrière de. (various references)
German hinter (after, behind, beyond, hind, in back of, past, rearward). (various references).
http://www.websters-online-dictionary.org/definition/abaft

abaft
[Great Britain]
arrière, à l'
Définition :
Towards the stern of a ship, relative to some object or position. Abaft the beam, any bearing or between the beam of a ship and her stern.
Note(s) :
"Abaft" is always relative e.g. abaft the mainmast (opposite to before); "aft" is general (opposite to forward).
http://www.oqlf.gouv.qc.ca/ressources/gdt.html
(GDT)