To the rear (6)
'to the rear' is the definition.
(astern means to the rear on a ship)
This is all the clue.
(Other definitions for astern that I've seen before include "following behind vessel" , "Towards the back (of a ship)" , "Towards a ship's rear" , "The wake is" , "Backward" .)
'to the rear' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for abaft that I've seen before include "near end of Titanic?" , "nearer the stern" , "(Nautically) behind" , "behind at sea" , "Towards the back (naut.)" .)